David Greenwood

Insider

First SEC filing: June 16, 2011 · Latest: Feb. 14, 2012

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Compensation Executive pay disclosed in company proxy statements.

Insider at

GERN selling June 14, 2011

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 59 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

59 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 14, 2011	GERN	S	34,005	$4.28	$145,541	754,031 Direct	-4.32%	Disposed	-61.6% (price as of 2026-08-21)
May 24, 2011	GERN	S	4,462	$4.47	$19,945	788,036 Direct	-0.56%	Disposed	-63.2% (price as of 2026-08-21)
May 20, 2011	GERN	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
May 20, 2011	GERN	A	20,000	—	—	792,498 Direct	+2.59%	Acquired	(price as of 2026-08-21)
May 20, 2011	GERN	A	20,000	—	—	772,498 Direct	+2.66%	Acquired	(price as of 2026-08-21)
May 20, 2011	GERN	A	77,500	—	—	752,498 Direct	+11.48%	Acquired	(price as of 2026-08-21)
May 20, 2011	GERN	A	50,000	—	—	674,998 Direct	+8.00%	Acquired	(price as of 2026-08-21)
March 9, 2011	GERN	A	150,000	—	—	150,000 Direct	—	Acquired	(price as of 2026-08-21)
March 9, 2011	GERN	A	75,000	—	—	624,998 Direct	+13.64%	Acquired	(price as of 2026-08-21)
Oct. 15, 2010	GERN	G	9,000	—	—	549,998 Direct	-1.61%	Disposed	(price as of 2026-08-21)
Oct. 14, 2010	GERN	G	1,000	—	—	558,998 Direct	-0.18%	Disposed	(price as of 2026-08-21)
July 9, 2010	GERN	A	120,000	—	—	559,998 Direct	+27.27%	Acquired	(price as of 2026-08-21)
July 9, 2010	GERN	A	140,000	—	—	439,998 Direct	+46.67%	Acquired	(price as of 2026-08-21)
July 9, 2010	GERN	A	20,000	—	—	299,998 Direct	+7.14%	Acquired	(price as of 2026-08-21)
July 9, 2010	GERN	A	20,000	—	—	279,998 Direct	+7.69%	Acquired	(price as of 2026-08-21)
June 2, 2010	GERN	S	14,746	$5.43	$80,071	259,998 Direct	-5.37%	Disposed	-69.7% (price as of 2026-08-21)
May 24, 2010	GERN	S	3,503	$5.11	$17,900	274,744 Direct	-1.26%	Disposed	-67.8% (price as of 2026-08-21)
May 19, 2010	GERN	A	75,000	—	—	75,000 Direct	—	Acquired	(price as of 2026-08-21)
May 19, 2010	GERN	A	37,500	—	—	278,247 Direct	+15.58%	Acquired	(price as of 2026-08-21)
Jan. 14, 2010	GERN	I	3,536	$6.22	$21,994	11,061 Indirect	+46.99%	Acquired	-73.6% (price as of 2026-08-21)
May 29, 2009	GERN	A	40,000	$6.52	$260,800	1,311,341 Direct	+3.15%	Acquired	-74.8% (price as of 2026-08-21)
May 29, 2009	GERN	A	20,000	$6.52	$130,400	1,271,341 Direct	+1.60%	Acquired	-74.8% (price as of 2026-08-21)
May 29, 2009	GERN	A	35,000	$6.52	$228,200	1,251,341 Direct	+2.88%	Acquired	-74.8% (price as of 2026-08-21)
May 29, 2009	GERN	A	75,000	$6.52	$489,000	1,216,341 Direct	+6.57%	Acquired	-74.8% (price as of 2026-08-21)
May 29, 2009	GERN	A	50,000	—	—	240,747 Direct	+26.21%	Acquired	(price as of 2026-08-21)
May 29, 2009	GERN	A	37,500	—	—	190,747 Direct	+24.47%	Acquired	(price as of 2026-08-21)
May 29, 2009	GERN	S	3,416	$6.35	$21,692	153,247 Direct	-2.18%	Disposed	-74.1% (price as of 2026-08-21)
May 26, 2009	GERN	S	19,320	$6.75	$130,410	156,663 Direct	-10.98%	Disposed	-75.6% (price as of 2026-08-21)
Jan. 23, 2009	GERN	I	3,948	$4.82	$19,029	7,525 Indirect	+110.37%	Acquired	-65.9% (price as of 2026-08-21)
Jan. 5, 2009	GERN	S	10,732	$4.90	$52,587	179,560 Direct	-5.64%	Disposed	-66.4% (price as of 2026-08-21)
May 28, 2008	GERN	A	40,000	$3.97	$158,800	1,397,682 Direct	+2.95%	Acquired	-58.6% (price as of 2026-08-21)
May 28, 2008	GERN	A	181,341	$3.97	$719,924	1,357,682 Direct	+15.42%	Acquired	-58.6% (price as of 2026-08-21)
May 28, 2008	GERN	A	75,000	$3.97	$297,750	1,176,341 Direct	+6.81%	Acquired	-58.6% (price as of 2026-08-21)
May 28, 2008	GERN	A	37,500	—	—	190,292 Direct	+24.54%	Acquired	(price as of 2026-08-21)
May 23, 2008	GERN	F	18,991	$3.92	$74,445	152,792 Direct	-11.06%	Disposed	-58.0% (price as of 2026-08-21)
Jan. 4, 2008	GERN	S	11,039	$5.34	$58,948	171,783 Direct	-6.04%	Disposed	-69.2% (price as of 2026-08-21)
Jan. 2, 2008	GERN	I	3,577	$5.73	$20,496	3,577 Indirect	—	Acquired	-71.3% (price as of 2026-08-21)
Nov. 12, 2007	GERN	S	4,000	$7.20	$28,800	179,245 Direct	-2.18%	Disposed	-77.2% (price as of 2026-08-21)
May 23, 2007	GERN	A	75,000	$9.32	$699,000	1,101,341 Direct	+7.31%	Acquired	-82.3% (price as of 2026-08-21)
May 23, 2007	GERN	A	37,500	—	—	183,245 Direct	+25.73%	Acquired	(price as of 2026-08-21)
May 23, 2007	GERN	A	87,500	—	—	145,745 Direct	+150.23%	Acquired	(price as of 2026-08-21)
May 22, 2007	GERN	G	700	—	—	58,245 Direct	-1.19%	Disposed	(price as of 2026-08-21)
May 18, 2007	GERN	I	10,931	$9.47	$103,517	58,945 Direct	-15.64%	Disposed	-82.6% (price as of 2026-08-21)
Jan. 3, 2007	GERN	I	2,283	$8.76	$19,999	69,876 Indirect	+3.38%	Acquired	-81.2% (price as of 2026-08-21)
Jan. 3, 2007	GERN	A	51,416	—	—	67,593 Direct	+317.83%	Acquired	(price as of 2026-08-21)
July 13, 2006	GERN	G	800	—	—	16,177 Direct	-4.71%	Disposed	(price as of 2026-08-21)
May 24, 2006	GERN	A	125,000	$6.63	$828,750	1,026,341 Direct	+13.87%	Acquired	-75.2% (price as of 2026-08-21)
Jan. 9, 2006	GERN	S	12,183	$8.56	$104,286	16,977 Direct	-41.78%	Disposed	-80.8% (price as of 2026-08-21)
Jan. 6, 2006	GERN	I	2,117	$8.50	$17,994	12,948 Indirect	+19.55%	Acquired	-80.6% (price as of 2026-08-21)
Jan. 6, 2006	GERN	A	16,212	—	—	29,160 Direct	+125.21%	Acquired	(price as of 2026-08-21)
July 21, 2005	GERN	G	1,100	—	—	10,831 Direct	-9.22%	Disposed	(price as of 2026-08-21)
July 20, 2005	GERN	M	30,000	$3.76	$112,800	901,341 Direct	-3.22%	Disposed	-56.2% (price as of 2026-08-21)
July 20, 2005	GERN	S	30,000	$10.45	$313,500	11,931 Direct	-71.55%	Disposed	-84.3% (price as of 2026-08-21)
July 20, 2005	GERN	M	30,000	$3.76	$112,800	41,931 Direct	+251.45%	Acquired	-56.2% (price as of 2026-08-21)
May 6, 2005	GERN	A	85,000	$6.40	$544,000	931,341 Direct	+10.04%	Acquired	-74.3% (price as of 2026-08-21)
Jan. 13, 2005	GERN	S	13,804	$8.57	$118,300	11,931 Direct	-53.64%	Disposed	-80.8% (price as of 2026-08-21)
Jan. 12, 2005	GERN	A	17,135	—	—	25,735 Direct	+199.24%	Acquired	(price as of 2026-08-21)
Jan. 12, 2005	GERN	I	1,812	$8.83	$16,000	8,600 Indirect	+26.69%	Acquired	-81.4% (price as of 2026-08-21)
May 27, 2004	GERN	A	75,000	$7.56	$567,000	846,341 Direct	+9.72%	Acquired	-78.2% (price as of 2026-08-21)
April 6, 2004	GERN	M	10,000	$3.76	$37,600	771,341 Direct	-1.28%	Disposed	-56.2% (price as of 2026-08-21)
April 6, 2004	GERN	G	1,000	—	—	6,788 Direct	-12.84%	Disposed	(price as of 2026-08-21)
April 6, 2004	GERN	G	4,000	—	—	7,788 Direct	-33.93%	Disposed	(price as of 2026-08-21)
April 6, 2004	GERN	S	1,000	$9.55	$9,550	11,788 Direct	-7.82%	Disposed	-82.8% (price as of 2026-08-21)
April 6, 2004	GERN	S	5,000	$9.50	$47,500	12,788 Direct	-28.11%	Disposed	-82.7% (price as of 2026-08-21)
April 6, 2004	GERN	M	10,000	$3.76	$37,600	17,788 Direct	+128.40%	Acquired	-56.2% (price as of 2026-08-21)
Jan. 5, 2004	GERN	A	3,069	—	—	7,788 Direct	+65.03%	Acquired	(price as of 2026-08-21)
Jan. 5, 2004	GERN	I	1,386	$10.10	$13,999	4,719 Indirect	+41.58%	Acquired	-83.7% (price as of 2026-08-21)
July 31, 2003	GERN	S	8,011	$8.20	$65,690	3,333 Direct	-70.62%	Disposed	-79.9% (price as of 2026-08-21)
July 31, 2003	GERN		1,225	$0.82	$1,004	11,344 Direct	+12.11%	Acquired	100.6% (price as of 2026-08-21)
July 31, 2003	GERN	M	6,786	$2.04	$13,843	10,119 Direct	+203.60%	Acquired	-19.4% (price as of 2026-08-21)
July 31, 2003	GERN	M	1,225	$0.82	$1,004	— Direct	—	Disposed	100.6% (price as of 2026-08-21)
July 31, 2003	GERN	M	6,786	$2.04	$13,843	782,566 Direct	-0.86%	Disposed	-19.4% (price as of 2026-08-21)
July 30, 2003	GERN	S	8,000	$8.29	$66,320	3,333 Direct	-70.59%	Disposed	-80.2% (price as of 2026-08-21)
July 30, 2003	GERN	M	8,000	$2.04	$16,320	11,333 Direct	+240.02%	Acquired	-19.4% (price as of 2026-08-21)
July 30, 2003	GERN	M	8,000	$2.04	$16,320	789,352 Direct	-1.00%	Disposed	-19.4% (price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
May 20, 2011	GERN	Employee Stock Option (right to buy)	Common Stock (100,000)	$4.65	May 20, 2021	100,000	Acquired
March 9, 2011	GERN	Employee Stock Option (right to buy)	Common Stock (150,000)	$5.00	March 9, 2021	150,000	Acquired
May 19, 2010	GERN	Employee Stock Option (right to buy)	Common Stock (75,000)	$5.29	May 19, 2020	75,000	Acquired
May 29, 2009	GERN	Stock Option (right to buy)	Common Stock (40,000)	$6.52	May 29, 2019	40,000	Acquired
May 29, 2009	GERN	Stock Option (right to buy)	Common Stock (20,000)	$6.52	May 29, 2019	20,000	Acquired
May 29, 2009	GERN	Stock Option (right to buy)	Common Stock (35,000)	$6.52	May 29, 2019	35,000	Acquired
May 29, 2009	GERN	Stock Option (right to buy)	Common Stock (75,000)	$6.52	May 29, 2019	75,000	Acquired
May 28, 2008	GERN	Stock Option (right to buy)	Common Stock (40,000)	$3.97	May 28, 2018	40,000	Acquired
May 28, 2008	GERN	Stock Option (right to buy)	Common Stock (181,341)	$3.97	May 28, 2018	181,341	Acquired
May 28, 2008	GERN	Stock Option (right to buy)	Common Stock (75,000)	$3.97	May 28, 2018	75,000	Acquired
May 23, 2007	GERN	Employee Stock Option (right to buy)	Common Stock (75,000)	$9.32	May 23, 2017	75,000	Acquired
May 24, 2006	GERN	Stock Option (right to buy)	Common Stock (125,000)	$6.63	May 24, 2016	125,000	Acquired
July 20, 2005	GERN	Stock Option (right to buy)	Common Stock (30,000)	$3.76	Sept. 5, 2012	30,000	Disposed
May 6, 2005	GERN	Stock Option (right to buy)	Common Stock (85,000)	$6.40	May 6, 2015	85,000	Acquired
May 27, 2004	GERN	Stock Option (right to buy)	Common Stock (75,000)	$7.56	May 27, 2014	75,000	Acquired
April 6, 2004	GERN	Stock Option (Right to Buy)	Common Stock (10,000)	$3.76	Sept. 5, 2012	10,000	Disposed
July 31, 2003	GERN	Employee Stock Option (right to buy)	Common Stock (1,225)	$0.82	July 27, 2005	1,225	Disposed
July 31, 2003	GERN	Employee Stock Option (right to buy)	Common Stock (6,786)	$2.04	April 30, 2006	6,786	Disposed
July 30, 2003	GERN	Employee Stock Option (right to buy)	Common stock (8,000)	$2.04	April 30, 2006	8,000	Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

GERN

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2005	$350,000	$137,802	—	—	—	—	$18,000	—
2004	$340,389	$147,710	—	—	—	—	$16,000	—
2003	$310,010	$153,040	—	—	—	—	$14,000	—

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.