SUN MICROSYSTEMS, INC.

1990 LONG-TERM EQUITY INCENTIVE PLAN

(Last amended effective as of August 15, 1996)

1. Purpose of the Plan. The purpose of the Sun Microsystems, Inc. 1990 Long-Term Equity Incentive Plan is to enable Sun Microsystems, Inc. to provide an incentive to eligible employees, consultants and Officers whose present and potential contributions are important to the continued success of the Company, to afford them an opportunity to acquire a proprietary interest in the Company, and to enable the Company to enlist and retain in its employ the best available talent for the successful conduct of its business. It is intended that this purpose will be effected through the granting of (a) stock options, (b) stock purchase rights, (c) stock appreciation rights, and (d) long-term performance awards.

2. Definitions. As used herein, the following definitions shall apply:

(a) "Board" means the Board of Directors of the Company.

(b) "Code" means the Internal Revenue Code of 1986, as amended.

(c) "Committee" means the Committee or Committees referred to in Section 5 of the Plan. If at any time no Committee shall be in office, then the functions of the Committee specified in the Plan shall be exercised by the Board.

(d) "Common Stock" means the Common Stock, $0.00067 par value (as adjusted from time to time), of the Company.

(e) "Company" means Sun Microsystems, Inc., a corporation organized under the laws of the state of Delaware, or any successor corporation.

(f) "Director" means a member of the Board.

(g) "Disability" means a disability, whether temporary or permanent, partial or total, as determined by the Committee.

(h) "Exchange Act" means the Securities Exchange Act of 1934, as amended.

(i) "Fair Market Value" means, as of any date, the value of Common Stock determined as follows:

(i) the last reported sale price of the Common Stock of the Company on the NASDAQ National Market System or, if no such reported sale takes place on any such day, the average of the closing bid and asked prices, or

(ii) if such Common Stock shall then be listed on a national securities exchange, the last reported sale price or, if no such reported sale takes place on any such day, the average of the closing bid and asked prices on the principal national securities exchange on which the Common Stock is listed or admitted to trading, or

(iii) if such Common Stock shall not be quoted on such National Market System nor listed or admitted to trading on a national securities exchange, then the average of the closing bid and asked prices, as reported by The Wall Street Journal for the over-the-counter market, or

(iv) if none of the foregoing is applicable, then the Fair Market Value of a share of Common Stock shall be determined by the Board in its discretion.

(j) "Incentive Stock Option" means an Option intended to be and designated as an "Incentive Stock Option" within the meaning of Section 422 of the Code.

(k) "Long-Term Performance Award" means an award under Section 10 below. A Long-Term Performance Award shall permit the recipient to receive a cash or stock bonus (as determined by the Committee) upon satisfaction of such performance factors as are set out in the recipient's individual grant. Long-Term Performance Awards will be based upon the achievement of Company, Subsidiary and/or individual performance factors or upon such other criteria as the Committee may deem appropriate.

(l) "Non statutory Stock Option" means any Option that is not an Incentive Stock Option.

(m) "Officer" means an officer of the Company within the meaning of Section 16 of the Exchange Act and the rules and regulations promulgated thereunder.

(n) "Option" means any option to purchase shares of Common Stock granted pursuant to Section 7 below.

(o) "Plan" means this 1990 Long-Term Equity Incentive Plan, as hereinafter amended from time to time.

(p) "Restricted Stock" means shares of Common Stock acquired pursuant to a grant of Stock Purchase Rights under Section 9 below.

(q) "Right" means and includes Stock Appreciation Rights and Stock Purchase Rights granted pursuant to the Plan.

(r) "Stock Appreciation Right" means an award made pursuant to Section 8 below, which right permits the recipient to receive an amount of Common Stock or cash equal in value to the difference between the Fair Market Value of Common Stock on the date of grant of the Option and the Fair Market Value of Common Stock on the date of exercise of the Stock Appreciation Right.

(s) "Stock Purchase Right" means the right to purchase Common Stock pursuant to a restricted stock purchase agreement entered into between the Company and the purchaser under Section 9 below.

(t) "Subsidiary" means a corporation, domestic or foreign, of which not less than 50% of the voting shares are held by the Company or by a Subsidiary, whether or not such corporation now exists or is hereafter organized or acquired by the Company or by a Subsidiary.

In addition, the term "Rule 16 b-3", the term "Performance Period" shall have the meanings set forth in Section 5 (a) and Section 10 respectively.

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