Below are insider transactions of 1,000 shares or more for...

Insider Trading

March 02, 1998

Below are insider transactions of 1,000 shares or more for publicly held companies based in Maryland or having substantial operations here. Insiders are officers, directors or owners of 10 percent or more of a corporation's stock.

Columbia Bancorp.

Robert W. Locke,vice president, exercised an option for 3,250 shares of common stock at $9.09 each Jan. 30 and now directly and indirectly holds 13,232 common.

General Motors Corp.

J. T. Battenberg,vice president, disposed of by gift 1,350 shares of common at an unreported price Jan. 2. Battenberg indirectly acquired by gift 1,350 shares of common at an unreported price that same day. and now directly and/or indirectly holds 34,048 common and 7,784 Class H common.

J. T. Battenberg,vice president, acquired by gift 4,104 shares and disposed of by gift 4,104 shares of common at an unreported price from Jan. 5 to Jan. 20. He now directly and/or indirectly holds 34,048 common and 7,784 Class H common.

J. T. Battenberg,vice president, indirectly acquired by gift 1,350 shares and disposed of by gift 1,350 shares of common at an unreported price from Jan. 21 to Jan. 23 and now directly and/or indirectly holds 34,048 common and 7,784 Class H common.

Lockheed Martin

Daniel M. Tellep,director, exercised an option for 25,000 shares and disposed of 727 shares of common at $39.76 each from Jan. 28 to Jan. 30. He now directly holds 32,450 common.

Marriott International

Charles D. Odell,vice president, exercised an option for 86,900 shares of common at between $15.99 and $54.81 each Jan. 29 and sold 60,000 shares at $70.29 each Jan. 29, and now directly holds 61,517 common.

Todd Clist,divisional officer, exercised an option for 5,000 shares of common at $15.99 each Jan. 29 and sold them at $70.29 each Jan. 29, and now directly holds 52,564 common.

John Willard Marriott,chairman, exercised an option for 20,000 shares of common at $26.03 each Jan. 29 and sold them at $70 each Jan. 29. Marriott indirectly acquired by gift 1,474 shares of common at an unreported price Jan. 12 and now directly and indirectly holds 10,568,486 common.

Martek Biosciences

Steve Dubin,officer, exercised an option for 34,000 shares of common at $2 each Jan. 14 and sold 17,000 shares at $9.69 each Jan. 14, and now directly holds 74,700 common.

Eugene H. Rotberg,director, exercised an option for 25,000 shares of common at $2 each Jan. 20 and now directly holds 39,250 common.

Douglas J. Macmaster,director, purchased 10,500 shares of common at $9.18 each Jan. 28 and now directly holds 20,500 common.

MCI Communications

Michael H. Bader,director, indirectly sold 1,000 shares of common at $42.50 each Jan. 2 and now directly and indirectly holds 220,674 common.

N. American Vaccine

Denis Dionne,director, exercised an option for 10,000 shares of common at $12.88 each Jan. 1 and sold them at $12.88 each Jan. 1, and no longer holds shares in the company.

Nabi Daniel Abdun,vice president, exercised an option for 10,000 shares of common at $9 each Jan. 30. To cover expenses of the transaction, Abdun turned in 4,585 of them for $19.63 each Jan. 30. He now directly and indirectly holds 88,983 common.

Francesco Bellini,director, exercised an option for 20,000 shares of common at $12.88 each Jan. 1 and now directly holds 35,200 common.

Jonathan Deitcher,director, exercised an option for 10,000 shares of common at $12.88 each Jan. 1 and now directly holds 45,000 common.

Neil W. Flanzraich,director, exercised an option for 10,000 shares of common at $12.88 each Jan. 1 and now directly holds 191,562 common.

Richard C. Pfenniger,director, exercised an option for 10,000 shares of common at $12.88 each Jan. 1 and now directly holds 44,686 common.

Insider Trading is written by CDA/Investnet of Fort Lauderdale, Fla.

Pub Date: 3/02/98

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