1 As filed with the Securities and Exchange Commission on October 12, 1999 Registration No. 333-__________ SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ----------------------------------- APPLIED MATERIALS, INC. (Exact name of issuer as specified in its charter) Delaware 94-1655526 (State or other jurisdiction (I.R.S. employer identification number) of incorporation or organization) 3050 Bowers Avenue, Santa Clara, California 95054 (Address of principal executive offices) (Zip Code) OBSIDIAN, INC. 1997 STOCK OPTION PLAN (Full title of the plan) Joseph J. Sweeney Applied Materials, Inc. 3050 Bowers Avenue, Santa Clara, California 95054 (Name and address of agent for service) Telephone number, including area code, of agent for service: (408) 727-5555 Copy to: John E. Aguirre Wilson Sonsini Goodrich & Rosati, PC 650 Page Mill Road Palo Alto, California 94304 CALCULATION OF REGISTRATION FEE ================================================================================================= Proposed Maximum Proposed Maximum Title of Securities Amount to be Offering Price Aggregate Amount of to be Registered Registered Per Share* Offering Price* Registration Fee* - ------------------------------------------------------------------------------------------------- Common Stock**, and 301,614 shares $81.00 $24,430,734.00 $6,792.00 Options to Purchase Common Stock ================================================================================================= * Estimated solely for the purpose of calculating the registration fee on the basis of $81.00 per share, the average of the high and low prices for the Common Stock on October 8, 1999 as reported by Nasdaq. ** Includes associated rights (the "Rights") to purchase preferred stock. Until the occurrence of certain prescribed events, none of which has occurred, the Rights are not exercisable.

2 INFORMATION REQUIRED IN THE REGISTRATION STATEMENT ITEM 3. INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE The following documents are incorporated by reference in this registration statement: (i) the latest annual report of Applied Materials, Inc. (the "Registrant") filed pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"); (ii) all other reports filed by the Registrant pursuant to Sections 13(a) or 15(d) of the Exchange Act since the end of the fiscal year covered by the annual report referred to in clause (i) above; and (iii) the description of the Registrant's common stock set forth in the Registrant's Registration Statement on Form 8-A relating thereto, including any amendment or report filed for the purpose of updating such description. All documents filed by the Registrant after the date of this registration statement pursuant to Sections 13(a), 13(c), 14, and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment (that indicates all securities offered have been sold or deregisters all securities then remaining unsold), shall be deemed to be incorporated by reference in this registration statement and to be a part hereof from the date of filing of such documents. ITEM 4. DESCRIPTION OF SECURITIES Inapplicable. ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL Inapplicable. ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS Section 145 of the Delaware General Corporation Law (the "Delaware Law") authorizes a court to award, or a corporation's board of directors to grant, indemnity to directors and officers in terms sufficiently broad to permit such indemnification under certain circumstances for liabilities (including reimbursement for expenses incurred) arising under the Securities Act of 1933, as amended. The Registrant's Certificate of Incorporation provides for indemnification of the Registrant's directors, officers, employees and other agents to the maximum extent permitted by Delaware Law. In addition, the Registrant has entered into indemnification agreements with its directors and certain of its officers. ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED Inapplicable. ITEM 8. EXHIBITS 4.1 Obsidian, Inc. 1997 Stock Option Plan, as amended. 5.1 Opinion of Wilson Sonsini Goodrich & Rosati, PC. 23.1 Consent of PricewaterhouseCoopers LLP. 2

3 23.2 Consent of Wilson Sonsini Goodrich & Rosati, PC is included in Exhibit 5.1 to this Registration Statement. 24.1 Power of Attorney of Directors. ITEM 9. UNDERTAKINGS (a) The undersigned registrant hereby undertakes: (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement: (i) To include any prospectus required by section 10(a)(3) of the Securities Act of 1933; (ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement; (iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement; Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the registration statement is on Form S-3 or Form S-8 and the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement. (2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. (b) The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant's annual report pursuant to section 13(a) or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. 3

4 (c) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue. 4

5 Signatures THE REGISTRANT Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Santa Clara, State of California on the 28th day of September, 1999. APPLIED MATERIALS, INC. (Registrant) /s/ James C. Morgan - ------------------------------------ James C. Morgan Chairman of the Board and Chief Executive Officer Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated. Signature Title Date Principal Executive Officer: /s/ James C. Morgan - ------------------------------------ James C. Morgan Chairman of the Board and September 28, 1999 Chief Executive Officer Principal Financial Officer: /s/ Joseph R. Bronson - ------------------------------------ Senior Vice President, September 28, 1999 Joseph R. Bronson Office of the President, Chief Financial Officer and Chief Administrative Officer Principal Accounting Officer: /s/ Michael K. O'Farrell - ------------------------------------ Vice President, Global September 28, 1999 Michael K. O'Farrell Controller, Chief Accounting Officer and Assistant Secretary 5

6 Directors: * Director September 28, 1999 - ------------------------------------ James C. Morgan * Director September 28, 1999 - ------------------------------------ Dan Maydan * Director September 28, 1999 - ------------------------------------ Michael H. Armacost * Director September 28, 1999 - ------------------------------------ Deborah A. Coleman * Director September 28, 1999 - ------------------------------------ Herbert M. Dwight, Jr. * Director September 28, 1999 - ------------------------------------ Philip V. Gerdine * Director September 28, 1999 - ------------------------------------ Tsuyoshi Kawanishi * Director September 28, 1999 - ------------------------------------ Paul R. Low * Director September 28, 1999 - ------------------------------------ Alfred J. Stein *By /s/ James C. Morgan -------------------------------- James C. Morgan Attorney-in-Fact A majority of the members of the Board of Directors. 6

7 EXHIBIT INDEX 4.1 Obsidian, Inc. 1997 Stock Option Plan, as amended. 5.1 Opinion of Wilson Sonsini Goodrich & Rosati, PC. 23.1 Consent of PricewaterhouseCoopers LLP. 23.2 Consent of Wilson Sonsini Goodrich & Rosati, PC is included in Exhibit 5.1 to this Registration Statement. 24.1 Power of Attorney of Directors. 7

1 EXHIBIT 4.1 OBSIDIAN, INC. 1997 STOCK OPTION PLAN 1. ESTABLISHMENT, PURPOSE AND TERM OF PLAN. 1.1 ESTABLISHMENT. The Obsidian, Inc. 1997 Stock Option Plan (the "Plan") is hereby established effective as of October 17, 1997. 1.2 PURPOSE. The purpose of the Plan is to advance the interests of the Participating Company Group and its shareholders by providing an incentive to attract, retain and reward persons performing services for the Participating Company Group and by motivating such persons to contribute to the growth and profitability of the Participating Company Group. 1.3 TERM OF PLAN. The Plan shall continue in effect until the earlier of its termination by the Board or the date on which all of the shares of Stock available for issuance under the Plan have been issued and all restrictions on such shares under the terms of the Plan and the agreements evidencing Options granted under the Plan have lapsed. However, all options shall be granted, if at all, within ten (10) years from the earlier of the date the Plan is adopted by the Board or the date the Plan is duly approved by the shareholders of the Company. 2. DEFINITIONS AND CONSTRUCTION. 2.1 DEFINITIONS. Whenever used herein, the following terms shall have their respective meanings set forth below: (a) "BOARD" means the Board of Directors of the Company. If one or more Committees have been appointed by the Board to administer the Plan, "BOARD" also means such Committee(s). (b) "CODE" means the Internal Revenue Code of 1986, as amended, and any applicable regulations promulgated thereunder. (c) "COMMITTEE" means the Compensation Committee or other committee of the Board duly appointed to administer the Plan and having such powers as shall be specified by the Board. Unless the powers of the Committee have been specifically limited, the Committee shall have all of the powers of the Board granted herein, including, without limitation, the power to amend or terminate the Plan at any time, subject to the terms of the Plan and any applicable limitations imposed by law. (d) "COMPANY" means Obsidian, Inc., a California corporation, or any successor corporation thereto. (e) "CONSULTANT" means any person, including an advisor, engaged by a Participating Company to render services other than as an Employee or a Director. 1

2 (f) "DIRECTOR" means a member of the Board or of the board of directors of any other Participating Company. (g) "DISABILITY" means the inability of the Optionee, in the opinion of a qualified physician acceptable to the Company, to perform the major duties of the Optionee's position with the Participating Company Group because of the sickness or injury of the Optionee. (h) "EMPLOYEE" means any person treated as an employee (including an officer or a Director who is also treated as an employee) in the records of a Participating Company and, with respect to any Incentive Stock Option granted to such person, who is an employee for purposes of Section 422 of the Code; provided, however, that neither service as a Director nor payment of a director's fee shall be sufficient to constitute employment for purposes of the Plan. (i) "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended. (j) "FAIR MARKET VALUE" means, as of any date, the value of a share of Stock or other property as determined by the Board, in its sole discretion, or by the Company, in its sole discretion, if such determination is expressly allocated to the Company herein, subject to the following: (i) If, on such date, there is a public market for the Stock, the Fair Market Value of a share of Stock shall be the closing sale price of a share of Stock (or the mean of the closing bid and asked prices of a share of Stock if the Stock is so quoted instead) as quoted on the Nasdaq National Market, the Nasdaq Small-Cap Market or such other national or regional securities exchange or market system constituting the primary market for the Stock, as reported in the Wall Street Journal or such other source as the Company deems reliable. If the relevant date does not fall on a day on which the Stock has traded on such securities exchange or market system, the date on which the Fair Market Value shall be established shall be the last day on which the Stock was so traded prior to the relevant date, or such other appropriate day as shall be determined by the Board, in its sole discretion. (ii) If, on such date, there is no public market for the Stock, the Fair Market Value of a share of Stock shall be as determined by the Board without regard to any restriction other than a restriction which, by its terms, will never lapse. (k) "INCENTIVE STOCK OPTION" means an Option intended to be (as set forth in the Option Agreement) and which qualifies as an incentive stock option within the meaning of Section 422Co) of the Code. (l) "INSIDER" means an officer or a Director of the Company or any other person whose transactions in Stock are subject to Section 16 of the Exchange Act. (m) "NONSTATUTORY STOCK OPTION" means an Option not intended to be (as set forth in the Option Agreement) or which does not qualify as an Incentive Stock Option. 2

3 (n) "OPTION" means a right to purchase Stock (subject to adjustment as provided in Section 4.2) pursuant to the terms and conditions of the Plan. An Option may be either an Incentive Stock Option or a Nonstatutory Stock Option. (o) "OPTION AGREEMENT" means a written agreement between the Company and an Optionee setting forth the terms, conditions and restrictions of the Option granted to the optionee and any shares acquired upon the exercise thereof. (p) "OPTIONEE" means a person who has been granted one or more Options. (q) "PARENT CORPORATION" means any present or future "parent corporation" of the Company, as defined in Section 424(e) of the Code. (r) "PARTICIPATING COMPANY" means the Company or any Parent Corporation or Subsidiary Corporation. (s) "PARTICIPATING COMPANY GROUP" means, at any point in time, all corporations collectively which are then Participating Companies. (t) "RULE 16b-3" means Rule 16b-3 under the Exchange Act, as amended from time to time, or any successor role or regulation. (u) "SECURITIES ACT" means the Securities Act of 1933, as amended. (v) "SERVICE" means an Optionee's employment or service with the Participating Company Group, whether in the capacity of an Employee, a Director or a Consultant. The Optionee's Service shall not be deemed to have terminated merely because of a change in the capacity in which the optionee renders Service to the Participating Company Group or a change in the Participating Company for which the optionee renders such Service, provided that there is no interruption or termination of the optionee's Service. Furthermore, an Optionee's Service with the Participating Company Group shall not be deemed to have terminated if the Optionee takes any military leave, sick leave, or other bona fide leave of absence approved by the Company; provided, however, that if any such leave exceeds ninety (90) days, on the ninety-first (91st) day of such leave the Optionee's Service shall be deemed to have terminated unless the optionee's right to return to Service with the Participating Company Group is guaranteed by statute or contract. Notwithstanding the foregoing, unless otherwise designated by the Company or required by law, a leave of absence shall not be treated as Service for purposes of determining vesting under the optionee's Option Agreement. The Optionee's Service shall be deemed to have terminated either upon an actual termination of Service or upon the corporation for which the Optionee performs Service ceasing to be a Participating Company. Subject to the foregoing, the Company, in its sole discretion, shall determine whether the Optionee's Service has terminated and the effective date of such termination. (w) "STOCK" means the common stock of the Company, as adjusted from time to time in accordance with Section 4.2. 3

4 (x) "SUBSIDIARY CORPORATION" means any present or future "Subsidiary corporation" of the Company, as defined in Section 424(f) of the Code. (y) "TEN PERCENT OWNER OPTIONEE" means an Optionee who, at the time an Option is granted to the Optionee, owns stock possessing more than ten percent (10%) of the total combined voting power of all classes of stock of a Participating Company within the meaning of Section 422(b)(6) of the Code. 2.2 CONSTRUCTION. Captions and titles contained herein are for convenience only and shall not affect the meaning or interpretation of any provision of the Plan. Except when ` otherwise indicated by the context, the singular shall include the plural and the plural shall include the singular. Use of the term "or" is not intended to be exclusive, unless the context clearly requires otherwise. 3. ADMINISTRATION. 3.1 ADMINISTRATION BY THE BOARD. The Plan shall be administered by the Board. All questions of interpretation of the Plan or of any Option shall be determined by the Board, and such determinations shall be final and binding upon all persons having an interest in the Plan or such Option. Any officer of a Participating Company shall have the authority to act on behalf of the Company with respect to any matter, right obligation, determination or election which is the responsibility of or which is allocated to the Company herein, provided the officer has apparent authority with respect to such matter, right obligation, determination or election. 3.2 ADMINISTRATION WITH RESPECT TO INSIDERS. With respect to participation by Insiders in the Plan, at any time that any class of equity security of the Company is registered pursuant to Section 12 of the Exchange Act, the Plan shall be administered in compliance with the requirements, if any, of Rule 16b-3. 3.3 POWERS OF THE BOARD. In addition to any other powers set forth in the Plan and subject to the provisions of the Plan, the Board shall have the full and final power and authority, in its sole discretion: (a) to determine the persons to whom, and the time or times at which, Options shall be granted and the number of shares of Stock to be subject to each Option; (b) to designate Options as Incentive Stock Options or Nonstatutory Stock Options; (c) to determine the Fair Market Value of shares of Stock or other property; (d) to determine the terms, conditions and restrictions applicable to each Option (which need not be identical) and any shares acquired upon the exercise thereof, including, without limitation, (i) the exercise price of the Option, (ii) the method of payment for shares purchased upon the exercise of the Option, (iii) the method for satisfaction of any tax withholding obligation arising in connection with the Option or such shares, including by the withholding or delivery of shares of stock, (iv) the timing, terms and conditions of the 4

5 exercisability of the Option or the vesting of any shares acquired upon the exercise thereof (v) the time of the expiration of the Option, (vi) the effect of the Optionee's termination of Service with the Participating Company Group on any of the foregoing, and (vii) all other terms, conditions and restrictions applicable to the Option or such shares not inconsistent with the terms of the Plan; (e) to approve one or more forms of Option Agreement; (f) to amend, modify, extend, cancel, renew, reprice or otherwise adjust the exercise price of, or grant a new Option in substitution for, any Option or to waive any restrictions or conditions applicable to any Option or any shares acquired upon the exercise thereof; (g) to accelerate, continue, extend or defer the exercisability of any Option or the vesting of any shares acquired upon the exercise thereof, including with respect to the period following an Optionee's termination of Service with the Participating Company Group; (h) to prescribe, amend or rescind rules, guidelines and policies relating to the Plan, or to adopt supplements to, or alternative versions of, the Plan, including, without limitation, as the Board deems necessary or desirable to comply with the laws of, or to accommodate the tax policy or custom of foreign jurisdictions whose citizens may be granted Options; and (i) to correct any defect, supply any omission or reconcile any inconsistency in the Plan or any Option Agreement and to make all other determinations and take such other actions with respect to the Plan or any Option as the Board may deem advisable to the extent consistent with the Plan and applicable law. 4. SHARES SUBJECT TO PLAN. 4.1 MAXIMUM NUMBER OF SHARES ISSUABLE. Subject to adjustment as provided in Section 4.2, the maximum aggregate number of shares of Stock that may be issued under the Plan shall be four million five hundred sixty-five thousand two hundred eighty-five (4,565,285) and shall consist of authorized but unissued or reacquired shares of Stock or any combination thereof. If an outstanding Option for any reason expires or is terminated or canceled or shares of Stock acquired, subject to repurchase, upon the exercise of an Option are repurchased by the Company, the shares of Stock allocable to the unexercised portion of such Option, or such repurchased shares of Stock, shall again be available for issuance under the Plan. Notwithstanding the foregoing, at any such time as the offer and sale of securities pursuant to the Plan is subject to compliance with Section 260.140.45 of Title 10 of the California Code of Regulations ("Section 260.140.45"), the total number of shares of Stock issuable upon the exercise of all outstanding Options (together with options outstanding under any other stock option plan of the Company) and the total number of shares provided for under any stock bonus or similar plan of the Company shall not exceed thirty percent (30%) (or such other higher percentage limitation as may be approved by the shareholders of the Company pursuant to 5

6 Section 260.140.45) of the then outstanding shares of the Company as calculated in accordance with the conditions and exclusions of Section 260.140.45. 4.2 ADJUSTMENTS FOR CHANGES IN CAPITAL STRUCTURE. In the event of any stock dividend, stock split, reverse stock split, recapitalization, combination, reclassification or similar change in the capital structure of the Company, appropriate adjustments shall be made in the number and class of shares subject to the Plan and to any outstanding Options and in the exercise price per share of any outstanding Options. If a majority of the shares which are of the same class as the shares that are subject to outstanding Options are exchanged for, converted into, or otherwise become (whether or not pursuant to an Ownership Change Event, as defined in Section 8.1) shares of another corporation (the "New Shares"), the Board may unilaterally amend the outstanding Options to provide that such Options are exercisable for New Shares. In the event of any such amendment, the number of shares subject to, and the exercise price per, share of, the outstanding Options shall be adjusted in a fair and equitable manner as determined by the Board, in its sole discretion. Notwithstanding the foregoing, any fractional share resulting from an adjustment pursuant to this Section 4.2 shall be rounded up or down to the nearest whole number, as determined by the Board, and in no event may the exercise price of any Option be decreased to an amount less than the par value, if any, of the stock subject to the Option. The adjustments determined by the Board pursuant to this Section 4.2 shall be final, binding and conclusive. 5. ELIGIBILITY AND OPTION LIMITATIONS. 5.1 PERSONS ELIGIBLE FOR OPTIONS. Options may be granted only to Employees, Consultants, and Directors. For purposes of the foregoing sentence, "Employees," "Consultants" and "Directors" shall include prospective Employees, prospective Consultants and prospective Directors to whom Options are granted in connection with written offers of an employment or other service relationship with the Participating Company Group. Eligible persons may be granted more than one (1) Option. 5.2 OPTION GRANT RESTRICTIONS. Any person who is not an Employee on the effective date of the grant of an Option to such person may be granted only a Nonstatutory Stock Option. An Incentive Stock Option granted to a prospective Employee upon the condition that such person become an Employee shall be deemed granted effective on the date such Person commences Service with a Participating Company, with an exercise price determined as of such date in accordance with Section 6.1. 5.3 FAIR MARKET VALUE LIMITATION. To the extent that options designated as Incentive Stock Options (granted under all stock option plans of the Participating Company Group, including the Plan) become exercisable by an Optionee for the first time during any calendar year for stock having a Fair Market Value greater than one hundred thousand dollars ($100,000), the portion of such options which exceeds such amount shall be treated as Nonstatutory Stock Options. For purposes of this Section 5.3, options designated as Incentive Stock Options shall be taken into account in the order in which they were granted, and the Fair Market Value of stock shall be determined as of the time the option with respect to such stock is granted. If the Code is amended to provide for a different limitation from that set forth in this Section 5.3, such different limitation shall be deemed incorporated herein effective as of the date 6

7 and with respect to such Options as required or permitted by such amendment to the Code. If an Option is treated as an Incentive Stock Option in part and as a Nonstatutory Stock Option in part by reason of the limitation set forth in this Section 5.3, the Optionee may designate which portion of such Option the Optionee is exercising. In the absence of such designation, the Optionee shall be deemed to have exercised the Incentive Stock Option portion of the Option first. Separate certificates representing each such portion shall be issued upon the exercise of the Option. 6. TERMS AND CONDITIONS OF OPTIONS. Options shall be evidenced by Option Agreements specifying the number of shares of Stock covered thereby, in such form as the Board shall from time to time establish. No Option or purported Option shall be a valid and binding obligation of the Company unless evidenced by a fully executed Option Agreement. Option Agreements may incorporate all or any of the terms of the Plan by reference and shall comply with and be subject to the following terms and conditions: 6.1 EXERCISE PRICE. The exercise price for each Option shall be established in the sole discretion of the Board; provided, however, that (a) the exercise price per share for an Incentive Stock Option shall be not less than the Fair Market Value of a share of Stock on the effective date of grant of the Option, (b) the exercise price per share for a Nonstatutory Stock Option shall be not less than eighty-five percent (85%) of the Fair Market Value of a share of Stock on the effective date of grant of the Option, and (c) no Option granted to a Ten Percent Owner Optionee shall have an exercise price per share less than one hundred ten percent (110%) of the Fair Market Value of a share of Stock on the effective date of grant of the Option. Notwithstanding the foregoing, an Option (whether an Incentive Stock Option or a Nonstatutory Stock Option) may be granted with an exercise price lower than the minimum exercise price set forth above if such Option is granted pursuant to an assumption or substitution for another option in a manner qualifying under the provisions of Section 424(a) of the Code. 6.2 EXERCISE PERIOD. Options shall be exercisable at such time or times, or upon such event or events, and subject to such terms, conditions, performance criteria, and restrictions as shall be determined by the Board and set forth in the Option Agreement evidencing such Option; provided, however, that (a) no Option shall be exercisable after the expiration of ten (10) years after the effective date of grant of such Option, (b) no Incentive Stock Option granted to a Ten Percent Owner Optionee shall be exercisable after the expiration of five (5) years after the effective date of grant of such Option, (c) no Option granted to a prospective Employee, prospective Consultant or prospective Director may become exercisable prior to the date on which such person commences Service with a Participating Company, and (d) with the exception of an Option granted to an officer, Director or Consultant, no Option shall become exercisable at a rate less than twenty percent (20%) per year over a period of five (5) years from the effective date of grant of such Option, subject to the Optionee's continued Service. Subject to the foregoing, unless otherwise specified by the Board in the grant of an Option, any Option granted hereunder shall have a term often (10) years from the effective date of grant of the Option. 7

8 6.3 PAYMENT OF EXERCISE PRICE. (a) FORMS OF CONSIDERATION AUTHORIZED. Except as otherwise provided below, payment of the exercise price for the number of shares of Stock being purchased pursuant to any Option shall be made (i) in cash, by check, or cash equivalent, (ii) by tender to the Company of shares of Stock owned by the Optionee having a Fair Market Value (as determined by the Company without regard to any restrictions on transferability applicable to such stock by reason of federal or state securities laws or agreements with an underwriter for the Company) not less than the exercise price, (iii) by the assignment of the proceeds of a sale or loan with respect to some or all of the shares being acquired upon the exercise of the Option (including, without limitation, through an exercise complying with the provisions of Regulation T as promulgated from time to time by the Board of Governors of the Federal Reserve System) (a "Cashless Exercise"), (iv) by the Optionee's promissory note in a form approved by the Company, (y) by such other consideration as may be approved by the Board from time to time to the extent permitted by applicable law, or (vi) by any combination thereof. The Board may at any time or from time to time, by adoption of or by amendment to the standard forms of Option Agreement described in Section 7, or by other means, grant Options which do not permit all of the foregoing forms of consideration to be used in payment of the exercise price or which otherwise restrict one or more forms of consideration. (b) TENDER OF STOCK. Notwithstanding the foregoing, an Option may not be exercised by tender to the Company of shares of Stock to the extent such tender of Stock would constitute a violation of the provisions of any law, regulation or agreement restricting the redemption of the Company's stock. Unless otherwise provided by the Board, an Option may not be exercised by tender to the Company of shares of Stock unless such shares either have been owned by the Optionee for more than six (6) months or were not acquired, directly or indirectly, from the Company. (c) CASHLESS EXERCISE. The Company reserves, at any and all times, the right, in the Company's sole and absolute discretion, to establish, decline to approve or terminate any program or procedures for the exercise of Options by means of a Cashless Exercise. (d) PAYMENT BY PROMISSORY NOTE. No promissory note shall be permitted if the exercise of an Option using a promissory note would be a violation of any law. Any permitted promissory note shall be on such terms as the Board shall determine at the time the Option is granted. The Board shall have the authority to permit or require the Optionee to secure any promissory note used to exercise an Option with the shares of Stock acquired upon the exercise of the Option or with other collateral acceptable to the Company. Unless otherwise provided by the Board, if the Company at any time is subject to the regulations promulgated by the Board of Governors of the Federal Reserve System or any other governmental entity affecting the extension of credit in connection with the Company's securities, any promissory note shall comply with such applicable regulations, and the Optionee shall pay the unpaid principal and accrued interest, if any, to the extent necessary to comply with such applicable regulations. 8

9 6.4 TAX WITHHOLDING. The Company shall have the right, but not the obligation, to deduct from the shares of Stock issuable upon the exercise of an Option, or to accept from the Optionee the tender of, a number of whole shares of Stock having a Fair Market Value, as determined by the Company, equal to all or any part of the federal, state, local and foreign taxes, if any, required by law to be withheld by the Participating Company Group with respect to such Option or the shares acquired upon the exercise thereof. Alternatively or in addition, in its sole discretion, the Company shall have the right to require the Optionee, through payroll withholding, cash payment or otherwise, including by means of a Cashless Exercise, to make adequate provision for any such tax withholding obligations of the Participating Company Group arising in connection with the Option or the shares acquired upon the exercise thereof. The Company shall have no obligation to deliver shares of Stock or to release shares of Stock from an escrow established pursuant to the Option Agreement until the Participating Company Group's tax withholding obligations have been satisfied by the Optionee. 6.5 REPURCHASE RIGHTS. Shares issued under the Plan may be subject to a right of first refusal, one or more repurchase options, or other conditions and restrictions as determined by the Board in its sole discretion at the time the Option is granted. The Company shall have the right to assign at any time any repurchase right it may have, whether or not such right is then exercisable, to one or more persons as may be selected by the Company. Upon request by the Company, each Optionee shall execute any agreement evidencing such transfer restrictions prior to the receipt of shares of Stock hereunder and shall promptly present to the Company any and all certificates representing shares of Stock acquired hereunder for the placement on such certificates of appropriate legends evidencing any such transfer restrictions. 6.6 EFFECT OF TERMINATION OF SERVICE. (a) OPTION EXERCISABILITY. subject to earlier termination of the Option as otherwise Provided herein, an Option shall be exercisable after an Optionee's termination of Service as follows: (i) DISABILITY. If the Optionee's Service with the Participating Company Group is terminated because of the Disability of the Optionee, the Option, to the extent unexercised and exercisable on the date on which the optionee's Service terminated, may be exercised by the optionee (or the Optionee's guardian or legal representative) at any time prior to the expiration of twelve (12) months (or such longer or shorter period of time as determined by the Board, in its sole discretion, which in no event shall be less than six (6) months) after the date on which the Optionee's Service terminated, but in any event no later than the date of expiration of the Option's term as set forth in the option Agreement evidencing such Option (the "Option Expiration Date"). (ii) DEATH. If the Optionee's Service with the Participating Company Group is terminated because of the death of the Optionee, the Option, to the extent unexercised and exercisable on the date on which the Optionee's Service terminated, may be exercised by the Optionee's legal representative or other person who acquired the right to exercise the Option by reason of the Optionee's death at any time prior to the expiration of twelve (12) months (or such longer or shorter period of time as determined by the Board, in its sole discretion, which in no event shall be less than six (6) months) after the date on which the 9

10 Optionee's Service terminated, but in any event no later than the Option Expiration Date. The Optionee's Service shall be deemed to have terminated on account of death if the optionee dies within three (3) months after the optionee's termination of Service other than for Cause (as defined below). (iii) OTHER TERMINATION OF SERVICE. If the optionee's Service with the Participating Company Group terminates for any reason, except Disability or death, the option, to the extent unexercised and exercisable by the Optionee on the date on which the Optionee's Service terminated, may be exercised by the optionee within three (3) months (or such longer or shorter period of time as determined by the Board, in its sole discretion, which in no event shall be less than thirty (30) days) after the date on which the Optionee's Service terminated, but in any event no later than the option Expiration Date. (b) TERMINATION AFTER CHANGE IN CONTROL. If the Optionee's Service with the Participating Company Group ceases as a result of Termination After Change in Control (as defined below), then the Option shall become immediately vested and exercisable in full as of the date on which the Optionee's Service terminated. (c) EXTENSION IF EXERCISE PREVENTED BY LAW. Notwithstanding the foregoing, if the exercise of an Option within the applicable time periods set forth in Section 6.6(a) is prevented by the provisions of Section 11 below, the Option shall remain exercisable until three (3) months after the date the Optionee is notified by the Company that the Option is exercisable, but in any event no later than the Option Expiration Date. (d) EXTENSION IF OPTIONEE SUBJECT TO SECTION 16(b). Notwithstanding the foregoing, if a sale within the applicable time periods set forth in Section 6.6(a) of shares acquired upon the exercise of the Option would subject the Optionee to suit under Section 16(b) of the Exchange Act, the Option shall remain exercisable until the earliest to occur of (i) the tenth (10th) day following the date on which a sale of such shares by the Optionee would no longer be subject to such suit, (ii) the one hundred and ninetieth (190th) day after the Optionee's termination of Service, or (iii) the Option Expiration Date. (e) CERTAIN DEFINITIONS. (i) "TERMINATION AFTER CHANGE IN CONTROL" shall mean either of the following events occurring within eighteen (18) months after a Change in Control: (1) termination by the Participating Company Group of the Optionee's Service with the Participating Company Group for any reason other than for Cause (as defined below); or (2) the Optionee's resignation for Good Reason (as defined below) from Service with the Participating Company Group within a reasonable period of time following the event constituting Good Reason. Notwithstanding any provision herein to the contrary, Termination After Change in Control shall not include any termination of the Optionee's Service with the Participating Company Group which (1) is for Cause (as defined below); (2) is a result of the Optionee's death or disability; (3) 10

11 is a result of the Optionee's voluntary termination of Service other than for Good Reason; or (4) occurs prior to the effectiveness of a Change in Control. (ii) "CAUSE" shall mean any of the following: (1) the Optionee's theft, dishonesty, or falsification of any Participating Company documents or records; (2) the Optionee's improper use or disclosure of a Participating Company's confidential or proprietary information; (3), any action by the Optionee which has a detrimental effect on a Participating Company's reputation or business; (4) the Optionee's failure or inability to perform any reasonable assigned duties after written notice from the Participating Company Group of, and a reasonable opportunity to cure, such failure or inability; (5) any material breach by the Optionee of any employment agreement between the Optionee and the Participating Company Group, which breach is not cured pursuant to the terms of such agreement; or (6) the Optionee's conviction (including any plea of guilty or nolo contendere) of any criminal act which impairs the Optionee's ability to perform his or her duties with the Participating Company Group. (iii) "GOOD REASON" shall mean any one or more of the following: (1) without the Optionee's express written consent, the assignment to the Optionee of any duties, or any limitation of the Optionee's responsibilities, substantially inconsistent with the Optionee's positions, duties, responsibilities and status with the Participating Company Group immediately prior to the date of the Change in Control; (2) without the Optionee's express written consent, the relocation of the principal place of the Optionee's employment to a location that is more than fifteen (15) miles from the Optionee's principal place of employment immediately prior to the date of the Change in Control, or the imposition of travel requirements substantially more demanding of the Optionee than such travel requirements existing immediately prior to the date of the Change in Control; (3) any failure by the Participating Company Group to pay, or any material reduction by the Participating Company Group of, (A) the Optionee's base salary in effect immediately prior to the date of the Change in Control (unless reductions comparable in amount and duration are concurrently made for all other employees of the Participating Company Group with responsibilities, organizational level and title comparable to the Optionee's), or (B) the Optionee's bonus compensation, if any, in effect immediately prior to the date of the Change in Control (subject to applicable performance requirements with respect to the actual amount of bonus compensation earned by the Optionee); or (4) any failure by the Participating Company Group to (A) continue to provide the Optionee with the opportunity to participate, on terms no less favorable than those in effect for the benefit of any employee group which includes a person holding the employment position or a comparable position with the Participating Company Group then held by the Optionee, in any benefit or compensation plans and programs, including, but not limited to, the Participating Company Group's life, disability, health, dental, medical, savings, profit sharing, stock purchase and retirement plans, if any, in which the Optionee was participating immediately prior to the date of the Change of Control, or their equivalent, or (B) 11

12 provide the Optionee with all other fringe benefits (or their equivalent) from time to time in effect for the benefit of any employee group which customarily includes a person holding the employment position or a comparable position with the Participating Company Group then held by the Optionee. 7. STANDARD FORMS OF OPTION AGREEMENT. 7.1 INCENTIVE STOCK OPTIONS. Unless otherwise provided by the Board at the time the Option is granted, an Option designated as an "INCENTIVE STOCK OPTION" shall comply with and be subject to the terms and conditions set forth in the form of Incentive Stock Option Agreement adopted by the Board concurrently with its adoption of the Plan and as amended from time to time. 7.2 NONSTATUTORY STOCK OPTIONS. Unless otherwise provided by the Board at the time the Option is granted, an Option designated as a "NONSTATUTORY STOCK OPTION" shall comply with and be subject to the terms and conditions set forth in the form of Nonstatutory Stock Option Agreement adopted by the Board concurrently with its adoption of the Plan and as amended from time to time. 7.3 AUTHORITY TO VARY TERMS. The Board shall have the authority from time to time to vary the terms of any of the standard forms of Option Agreement described in this Section 7 either in connection with the grant or amendment of an individual Option or in connection with the authorization of a new standard form or forms; provided, however, that the terms and conditions of any such new, revised or amended standard form or forms of Option Agreement shall be in accordance with the terms of the Plan. 8. CHANGE IN CONTROL. 8.1 DEFINITIONS. (a) An "OWNERSHIP CHANGE EVENT" shall be deemed to have occurred if any of the following occurs with respect to the Company: (i) the direct or indirect sale or exchange in a single or series of related transactions by the shareholders of the Company of more than fifty percent (50%) of the voting stock of the Company; (ii) a merger or consolidation in which the Company is a party; (iii) the sale, exchange, or transfer of all or substantially all of the assets of the Company; or (iv) a liquidation or dissolution of the Company. (b) A "CHANGE IN CONTROL" shall mean an Ownership Change Event or a series of related Ownership Change Events (collectively, the "TRANSACTION") wherein the shareholders of the Company immediately before the Transaction do not retain immediately after the Transaction, in substantially the same proportions as their ownership of shares of the 12

13 Company's voting stock immediately before the Transaction, direct or indirect beneficial ownership of more than fifty percent (50%) of the total combined voting power of the outstanding voting stock of the Company or the corporation or corporations to which the assets of the Company were transferred (the "TRANSFEREE CORPORATION(S)"), as the case may be. For purposes of the preceding sentence, indirect beneficial ownership shall include, without limitation, an interest resulting from ownership of the voting stock of one or more corporations which, as a result of the Transaction, own the Company or the Transferee Corporation(s), as the case may be, either directly or through one or more subsidiary corporations. The Board shall have the right to determine whether multiple sales or exchanges of the voting stock of the Company or multiple Ownership Change Events are related, and its determination shall be final, binding and conclusive. EFFECT OF CHANGE IN CONTROL ON OPTIONS. In the event of a Change in Control, the surviving, continuing, successor, or purchasing corporation or parent corporation thereof, as the case may be (the "ACQUIRING CORPORATION"), may either assume the Company's rights and obligations under outstanding Options or substitute for outstanding Options substantially equivalent options for the Acquiring Corporation's stock. For purposes of this Section 8.2, an Option shall be deemed assumed, if following the Change in Control, the Option confers the right to purchase in accordance with its terms and conditions, for each share of Stock subject to the Option immediately prior to the Change in Control, the consideration (whether stock, cash or other securities or property) to which a holder of a share of Stock on the effective date of the Change in Control was entitled. In the event the Acquiring Corporation elects not to assume or substitute for outstanding Options in connection with a Change in Control, any unexercisable or unvested portion of the outstanding Options shall be immediately exercisable and vested in full as of the date ten (10) days prior to the date of the Change in Control. The exercise or vesting of any Option that was permissible solely by reason of this Section 8.2 shall be conditioned upon the consummation of the Change in Control. Any Options which are neither assumed or substituted for by the Acquiring Corporation in connection with the Change in Control nor exercised as of the date of the Change in Control shall terminate and cease to be outstanding effective as of the date of the Change in Control. Notwithstanding the foregoing, shares acquired upon exercise of an Option prior to the Change in Control and any consideration received pursuant to the Change in Control with respect to such shares shall continue to be subject to all applicable provisions of the Option Agreement evidencing such Option except as otherwise provided in such Option Agreement. Furthermore, notwithstanding the foregoing, if the corporation the stock of which is subject to the Outstanding Options immediately prior to an Ownership Change Event described in Section 8.1(a)(i) constituting a Change in Control is the surviving or continuing corporation and immediately after such Ownership Change Event less than fifty percent (50%) of the total combined voting Power of its voting stock is held by another corporation or by other corporations that are members of an affiliated group within the meaning of Section 1504(a) of the Code without regard to the provisions of Section 1504(b) of the Code, the outstanding Options shall not terminate unless the Board otherwise provides in its sole discretion. 9. PROVISION OF INFORMATION. At least annually, copies of the Company's balance sheet and income statement for the just completed fiscal year shall be made available to each Optionee and purchaser of shares of Stock upon the exercise of an Option. The Company shall not be required to provide 13

14 such information to persons whose duties in connection with the Company assure them access to equivalent information. 10. NONTRANSFERABILITY OF OPTIONS. During the lifetime of the Optionee, an Option shall be exercisable only by the Optionee or the Optionee's guardian or legal representative. No Option shall be assignable or transferable by the Optionee, except by will or by the laws of descent and distribution. 11. COMPLIANCE WITH SECURITIES LAW. The grant of Options and the issuance of shares of Stock upon exercise of Options shall be subject to compliance with all applicable requirements of federal, state and foreign law with respect to such securities. Options may not be exercised if the issuance of shares of Stock upon exercise would constitute a violation of any applicable federal, state or foreign securities laws or other law or regulations or the requirements of any stock exchange or market system upon which the Stock may then be listed. In addition, no Option may be exercised unless (a) a registration statement under the Securities Act shall at the time of exercise of the Option be in effect with respect to the shares issuable upon exercise of the Option or (b) in the opinion of legal counsel to the Company, the shares issuable upon exercise of the Option may be issued in accordance with the terms of an applicable exemption from the registration of the Securities Act. The inability of the Company to obtain from any regulatory body having jurisdiction the authority, if any, deemed by the Company's legal counsel to be necessary to the lawful issuance and sale of any shares hereunder shall relieve the Company of any liability in respect of the failure to issue or sell such shares as to which such requisite authority shall not have been obtained. As a condition to the exercise of any Option, the Company may require the Optionee to satisfy any qualifications that may be necessary or appropriate, to evidence compliance with any applicable law or regulation and to make any representation or warranty with respect thereto as may be requested by the Company. 12. INDEMNIFICATION. In addition to such other rights of indemnification as they may have as members of the Board or officers or employees of the Participating Company Group, members of the Board and any officers or employees of the Participating Company Group to whom authority to act for the Board or the Company is delegated shall be indemnified by the Company against all reasonable expenses, including attorneys' fees, actually and necessarily incurred in connection with the defense of any action, suit or proceeding, or in connection with any appeal therein, to which they or any of them may be a party by reason of any action taken or failure to act under or in connection with the Plan, or any right granted hereunder, and against all amounts paid by them in settlement thereof (provided such settlement is approved by independent legal counsel selected by the Company) or paid by them in satisfaction of a judgment in any such action, suit or proceeding, except in relation to matters as to which it shall be adjudged in such action, suit or proceeding that such person is liable for gross negligence, bad faith or intentional misconduct in duties; provided, however, that within sixty (60) days after the institution of such action, suit or proceeding, such person shall offer to the Company, in writing, the opportunity at its own expense to handle and defend the same. 14

15 13. TERMINATION OR AMENDMENT OF PLAN. The Board may terminate or amend the Plan at any time. However, subject to changes in applicable law, regulations or rules that would permit otherwise, without the approval of the Company's shareholders, there shall be (a) no increase in the maximum aggregate number of shares of Stock that may be issued under the Plan (except by operation of the provisions of Section 4-2), (b) no change in the class of persons eligible to receive Incentive Stock Options, and (c) no other amendment of the Plan that would require approval of the Company's shareholders under any applicable law, regulation or rule. In any event, no termination or amendment of the Plan may adversely affect any then outstanding Option or any unexercised portion thereto without the consent of the Optionee, unless such termination or amendment is required to enable an Option designated as an Incentive Stock Option to qualify as an Incentive Stock Option or is necessary to comply with any applicable law, regulation or rule. 14. SHAREHOLDER APPROVAL. The Plan or any increase in the maximum number of shares of Stock issuable thereunder as provided in Section 4.1 (the "Maximum Shares") shall be approved by the shareholders of the Company within twelve (12) months of the date of adoption thereof by the Board. Options granted prior to shareholder approval of the Plan or in excess of the Maximum Shares previously approved by the shareholders shall become exercisable no earlier than the date of shareholder approval of the Plan or such increase in the Maximum Shares, as the case may be. IN WITNESS WHEREOF, the undersigned Secretary of the Company certifies that the foregoing Obsidian, Inc. 1997 Stock Option Plan was duly adopted by the Board on October 17, 1997. ___________________________________ Secretary 15

16 AMENDMENT NO. 1 TO THE OBSIDIAN, INC. 1997 STOCK OPTION PLAN OBSIDIAN, INC., having established the Obsidian, Inc. 1997 Stock Option Plan (the "Plan"), hereby amends the Plan, effective as of October 5, 1999 as follows: 1. Section 1.3 of the Plan is hereby amended in its entirety as follows: 1.3 TERM OF PLAN. In connection with the merger (the "Merger") of the Company and Astra Acquisition Corp. ("Astra"), a Delaware corporation and a wholly-owned subsidiary of Applied Materials, Inc. ("AMAT"), Options previously granted to Optionees under the Plan that remain outstanding as of October 5, 1999 (the "Outstanding Options"), have been modified pursuant to the Agreement and Plan of Reorganization and Merger dated as of May 17, 1999 (the "Merger Agreement"), among the Company, Astra and AMAT, so as to be exercisable only into shares of common stock of AMAT, par value $0.01 per share (the "Stock"), all as set forth in the Merger Agreement and subject to its terms and conditions. Effective as of October 5, 1999, except with respect to the Outstanding Options, the Plan is terminated. Accordingly no shares of Stock remain available for future grant under the Plan, other than pursuant to the Outstanding Options. 2. Section 3.1 is hereby amended in its entirety to read as follows: 3.2 Administration. The Plan shall be administered by the Stock Option and Compensation Committee of the Board of Directors of AMAT. As used throughout this Plan, the "Board" shall mean the Stock Option and Compensation Committee of the Board of Directors of AMAT. 3. The first sentence of Section 4.1 is hereby amended in its entirety to read as follows: AMAT has reserved such number of shares of Stock as are necessary to satisfy the Outstanding Options described in Section 1.3 of the Plan. 4. Section 5.1 is hereby amended in its entirety to read as follows: 5.1 No Further Option Grants. Effective October 5, 1999, except with respect to the Outstanding Options, the Plan is terminated. Accordingly, no further Options shall be granted under the Plan. Optionees holding Outstanding Options may continue to exercise such Outstanding Options in accordance with their terms, subject to the terms and conditions of the Merger Agreement. 1

17 5. Section 13 is hereby amended by adding the following sentence to the end thereto to read as follows: Except with respect to the Outstanding Options, the Plan shall terminate effective as of October 5, 1999. IN WITNESS WHEREOF, Obsidian, Inc., by the officer identified below, who has been duly authorized by the Board of Directors of the Company, has executed this Amendment No. 1 on the date indicated below. OBSIDIAN, INC. By:_______________________________ Title:____________________________ Date: ___________________________ 2

1 EXHIBIT 5.1 October 5, 1999 Applied Materials, Inc. 3050 Bowers Avenue Santa Clara, California 95054 Re: Registration Statement on Form S-8/Obsidian, Inc. 1997 Stock Option Plan Ladies and Gentlemen: At your request, we are rendering this opinion in connection with the proposed issuance pursuant to the Obsidian, Inc. 1997 Stock Option Plan (the "Plan"), of up to 301,614 shares of common stock, $0.01 par value ("Common Stock"), of Applied Materials, Inc., a Delaware corporation (the "Company"). We have examined instruments, documents, and records which we deemed relevant and necessary for the basis of our opinion hereinafter expressed. In such examination, we have assumed the following: (a) the authenticity of original documents and the genuineness of all signatures; (b) the conformity to the originals of all documents submitted to us as copies; and (c) the truth, accuracy and completeness of the information, representations and warranties contained in the records, documents, instruments and certificates we have reviewed. Based on such examination, we are of the opinion that the 301,614 shares of Common Stock to be issued by the Company pursuant to the Plan are validly authorized shares of Common Stock and, when issued in accordance with the provisions of the Plan, will be legally issued, fully paid and nonassessable. We hereby consent to the filing of this opinion as an exhibit to this Registration Statement on Form S-8 and to the use of our name wherever it appears in said Registration Statement. In giving such consent, we do not consider that we are "experts" within the meaning of such term as used in the Securities Act of 1933, as amended, or the rules and regulations of the Securities and Exchange Commission issued thereunder, with respect to any part of the Registration Statement, including this opinion as an exhibit or otherwise. Very truly yours, /s/ Wilson Sonsini Goodrich & Rosati WILSON SONSINI GOODRICH & ROSATI, PC

1 EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated November 17, 1998, except as to Note 14, which is dated as of December 23, 1998, relating to the consolidated financial statements, which appears in the 1998 Annual Report to Stockholders of Applied Materials, Inc., which is incorporated by reference in Applied Materials, Inc.'s Annual Report on Form 10-K for the year ended October 25, 1998. We also consent to the incorporation by reference of our report relating to the financial statement schedule, which appears in such Annual Report on Form 10-K. /s/ PRICEWATERHOUSECOOPERS LLP PricewaterhouseCoopers LLP San Jose, California October 8, 1999

1 EXHIBIT 24.1 POWER OF ATTORNEY OF DIRECTORS KNOW BY ALL PERSONS BY THESE PRESENTS: Each of the undersigned directors of Applied Materials, Inc., a Delaware corporation (the "Company"), hereby constitutes and appoints James C. Morgan, Joseph R. Bronson, Michael K. O'Farrell and Joseph J. Sweeney and each of them with power to act alone, his or her true and lawful attorney-in-fact, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign a Registration Statement or Registration Statements on Form S-8 or other appropriate form, under the Securities Act of 1933, as amended, relating to such number of shares of Common Stock as are necessary to satisfy the options granted under the Obsidian, Inc. 1997 Stock Option Plan that are to be assumed by the Company and that remain outstanding as of the effective date of the merger of Obsidian, Inc. and Astra Acquisition Corp., a wholly-owned subsidiary of the Company, and any and all amendments (including post-effective amendments) to such Registration Statements, and to file such Registration Statements and any and all amendments thereto, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorney-in-fact full power and authority to do and perform each and every act and thing necessary and desirable to be done in and about the premises, as fully to all intents and purposes, as he or she might do or could do in person, thereby ratifying and confirming all that said attorney-in-fact or his or her substitute or substitutes may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, I have hereunto set my hand this 23rd day of June, 1999. /s/ Michael H. Armacost June 23, 1999 - -------------------------------------- Michael H. Armacost /s/ Deborah A. Coleman June 23, 1999 - -------------------------------------- Deborah A. Coleman /s/ Herbert M. Dwight, Jr. June 23, 1999 - -------------------------------------- Herbert M. Dwight, Jr. /s/ Philip V. Gerdine June 23, 1999 - -------------------------------------- Philip V. Gerdine /s/ Tsuyoshi Kawanishi June 23, 1999 - -------------------------------------- Tsuyoshi Kawanishi /s/ James C. Morgan June 23, 1999 - -------------------------------------- James C. Morgan

2 /s/ Dan Maydan June 23, 1999 - -------------------------------------- Dan Maydan /s/ Alfred J. Stein June 23, 1999 - -------------------------------------- Alfred J. Stein /s/ Paul R. Low June 23, 1999 - -------------------------------------- Paul R. Low