Medidata Solutions Inc. (MDSO)

Market is closed

Insider Trading: Sales

Insider	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
Krasnow Officer	$19.13	13,000	$248,664.00	39,462	2010-11-19	Filing
Krasnow Officer	$18.93	7,000	$132,475.00	39,462	2010-11-18	Filing
Sherif Officer, Director	$19.29	2,000	$38,587.00	1,150,258	2010-11-15	Filing
Douglas Officer	$19.95	16,500	$329,217.90	8,133	2010-11-12	Filing
Krasnow Officer	$18.81	27,507	$517,483.69	39,462	2010-11-15	Filing
Krasnow Officer	$20.64	22,493	$464,199.29	39,462	2010-11-12	Filing
Hirschfeld Officer	$18.13	6,611	$119,872.64	103,392	2010-11-16	Filing
Hirschfeld Officer	$18.92	68,124	$1,288,981.02	103,392	2010-11-15	Filing
Hirschfeld Officer	$19.79	25,265	$500,001.93	103,392	2010-11-12	Filing
Kurtz Director	$18.58	20,000	$371,608.00	8,457	2010-11-15	Filing
De Officer, Director	$18.68	25,000	$466,900.00	1,371,164	2010-11-15	Filing
Sobiloff Director	$14.18	825,000	$11,694,375.00	1,022,914	2009-12-24	Filing
Sobiloff Director	$14.18	2,960,528	$41,965,484.40	1,847,914	2009-12-14	Filing
Sobiloff Director	$13.02	631,835	$8,226,491.70	4,808,442	2009-06-30	Filing
Insight Large Shareholder	$14.18	2,960,528	$41,965,484.40	1,844,343	2009-12-14	Filing
Insight Large Shareholder	$14.18	17,763	$251,790.53	12,422	2009-12-14	Filing
Insight Large Shareholder	$14.18	287,171	$4,070,648.93	180,974	2009-12-14	Filing
Insight Large Shareholder	$14.18	313,816	$4,448,341.80	194,038	2009-12-14	Filing
Insight Large Shareholder	$14.18	2,341,778	$33,194,703.15	1,456,909	2009-12-14	Filing
De Officer, Director	$14.18	145,000	$2,055,375.00	1,339,112	2009-12-09	Filing