EXHIBIT 2 SHARE OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT The following table sets forth the Share ownership as of December 19, 1997 of (i) shareholders who, to the knowledge of Safety-Kleen, owned beneficially more than 5% of the outstanding shares of Common Stock; (ii) each of Safety- Kleen's directors; (iii) each executive officer and (iv) Safety-Kleen's directors and executive officers as a group. NUMBER OF SHARES PERCENTAGE OF BENEFICIALLY OUTSTANDING NAME OWNED(1) SHARES(2) ---- ------------ ------------- FIVE PERCENT SHAREHOLDERS: FMR Corp. 82 Devenonshire St., Boston, MA 02109....... 4,230,519 7.24% Emery Family Group: Joan Emery Lammers 1801 Seminary St., Alton, IL 62002........ 1,948,673(3) 3.32% William H. Emery II 11388 SW Riverwoods Rd., Portland, OR 97219..................................... 1,645,510 2.81% Lucy T. Otzen 100 Anchor Drive, #472, N. Key Largo, FL 33037..................................... 1,481,093(4) 2.53% Edward W. Emery, Jr. Route 18, Box 13, Bedford, IN 47421....... 60,521(5) .11% Circle L. Enterprises L.P. Landmark Center, P.O. Box 1056, Lake Geneva, WI 53147.................... 1,367,520(4) 1.33% DIRECTORS AND EXECUTIVE OFFICERS: Donald W. Brinckman.......................... 907,100(6) 1.53% Hyman K. Bielsky............................. 57,858(7) * Roy D. Bullinger............................. 64,295(8) * Robert J. Burian............................. 125,036(9) * Andrew A. Campbell........................... -- * Michael H. Carney............................ 137,244(10) * Joseph Chalhoub.............................. 352,146(11) * David A. Dattilo............................. 121,435(12) * Lawrence Davenport........................... 8,158(13) * Richard T. Farmer............................ 43,390(14) * Scott E. Fore................................ 42,260(15) * Russell A. Gwillim........................... 198,493(16) * F. Henry Habicht II.......................... 47,118(17) * Edgar D. Jannotta............................ 67,500(14) * John G. Johnson, Jr.......................... 99,179(18) * Scott D. Krill............................... 4,362(19) * Karl G. Otzen................................ 1,481,093(4) 2.53% Clark J. Rose................................ 79,914(20) * Laurence M. Rudnick.......................... 45,590(21) * Paul D. Schrage.............................. 31,180(14) * C. James Schulz.............................. 17,300(22) * Marcia E. Williams........................... 12,250(23) * Robert W. Willmschen......................... 148,755(24) * W. Gordon Wood............................... 71,317(14) * All Directors and Officers as a Group (24 persons).................................... 4,212,953(25) 6.99% - -------- *Denotes less than one percent of shares outstanding. (1) Under regulations of the Securities and Exchange Commission, persons who own or have the power to vote or dispose of shares, either alone or jointly with others, are deemed to be the beneficial owners of such shares. Such persons are also deemed to be the beneficial owners of shares beneficially owned by certain close family members. (2) Shares subject to options exercisable within 60 days of December 19, 1997 are considered outstanding for the purpose of determining the percent of the class held by the holder of such option, but not for the purpose of computing the percentage held by others. (3) The shares shown for Joan Emery Lammers include 683,760 shares contributed by or on behalf of Mrs. Lammers in December 1992 to Circle L Enterprises L.P. (the "Circle L Limited Partnership"). See Note (4). (4) Karl G. Otzen and Lucy T. Otzen (the "Otzens") are husband and wife. For purposes of this table, each is deemed to own shares owned by the other, and accordingly the same shares are shown opposite each of their names. In December 1992, the Otzens caused 683,760 of the shares shown opposite each of their names to be contributed to Circle L Limited Partnership. The general partner which controls the Partnership is a corporation in which Karl G. Otzen, Lucy T. Otzen, Joan Emery Lammers and her husband (the "Lammers") each own 25% of the voting stock and each occupies one of the four positions on the Board of Directors. Because the Otzens and Lammers share voting power over all of the shares held by the Partnership, each of them may be deemed to "own" all shares in the Partnership under the criteria governing this table. To enhance clarity of presentation, however, the shares contributed to the Partnership by Joan Emery Lammers are shown only opposite her name in the table and the shares contributed by the Otzens are shown only opposite their respective names. The shares shown opposite the Otzens' names also include: 757,721 shares owned by trusts of which the Otzens are co-trustees, 9,100 shares owned by a trust of which The Northern Trust Company is trustee and 30,000 shares subject to options exercisable by Karl G. Otzen within 60 days of December 19, 1997. (5) All shares are owned by a trust of which The Northern Trust Company is trustee. (6) Includes 73 shares owned by his wife, 537,492 shares subject to options exercisable within 60 days of December 19, 1997 and 1,260 shares held in Safety-Kleen's 401(k) plan as to which he does not have voting control. (7) Includes 53,487 shares subject to options exercisable within 60 days of December 19, 1997 and 1,686 shares held in Safety-Kleen's 401(k) plan as to which he does not have voting control. (8) Includes 53,537 shares subject to options exercisable within 60 days of December 19, 1997. (9) Includes 121,175 shares subject to options exercisable within 60 days of December 19, 1997. (10) Includes 90,775 shares subject to options exercisable within 60 days of December 19, 1997. (11) Includes 275,000 shares owned by Breslube Industries, Ltd. of which 100% is owned by Mr. Chalhoub. Also included are 59 shares owned by his wife, 75 shares owned by his son and 77,012 shares subject to options exercisable within 60 days of December 19, 1997. (12) Includes 90,090 shares subject to options exercisable within 60 days of December 19, 1997. (13) Includes 8,137 shares subject to options exercisable within 60 days of December 19, 1997 and 21 shares held in Safety-Kleen's 401(k) plan as to which he does not have voting control. (14) Includes 30,000 shares subject to options exercisable within 60 days of December 19, 1997. (15) Includes 89,999 shares subject to options exercisable within 60 days of December 19, 1997 and 332 shares held in Safety-Kleen's 401(k) plan as to which he does not have voting control. (16) Includes 30,223 shares owned by his wife and 30,000 shares subject to options exercisable within 60 days of December 19, 1997. Mr. Gwillim is also a co-trustee for 45,827 shares held in an irrevocable trust for which he has no beneficial ownership; such shares are not included in the table. (17) Includes 44,500 shares subject to options exercisable within 60 days of December 19, 1997 and 218 shares held in Safety-Kleen's 401(k) plan as to which he does not have voting control. 2 (18) Includes 700 shares owned by his wife, 85,375 shares subject to options exercisable within 60 days of December 19, 1997 and 532 shares held in the Company's 401(k) plan as to which he does not have voting control. Mr. Johnson resigned from the Company on August 8, 1997. (19) Includes 3,974 shares subject to options exercisable within 60 days of December 19, 1997 and 288 shares held in Safety-Kleen's 401(k) plan as to which he does not have voting control. (20) Includes 68,157 shares subject to options exercisable within 60 days of December 19, 1997. (21) Includes 43,849 shares subject to options exercisable within 60 days of December 19, 1997. (22) Includes 15,375 shares subject to options exercisable within 60 days of December 19, 1997. (23) Includes 11,250 shares subject to options exercisable within 60 days of December 19, 1997. (24) Includes 99,826 shares subject to options exercisable within 60 days of December 19, 1997. (25) Includes 1,674,010 shares subject to options exercisable within 60 days of November 18, 1997 and 4,337 shares held in Safety-Kleen's 401(k) plan as to which they do not have voting control. 3