Gregory A Demopulos MD

Insider

First SEC filing: Oct. 7, 2009 · Latest: Oct. 7, 2009

On this page

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.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

OMER selling June 17, 2021

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 55 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

55 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 22, 2026	OMER	A	1,000,000	—	—	1,000,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 21, 2022	OMER	A	650,000	—	—	650,000 Direct	—	Acquired	(price as of 2026-08-21)
July 2, 2021	OMER	A	550,000	—	—	550,000 Direct	—	Acquired	(price as of 2026-08-21)
June 17, 2021	OMER	M	36,857	$4.10	$151,114	2,063,843 Direct	+1.82%	Acquired	357.3% (price as of 2026-08-21)
June 17, 2021	OMER	S 10b5-1	36,857	$14.90	$549,169	2,026,986 Direct	-1.79%	Disposed	25.8% (price as of 2026-08-21)
June 17, 2021	OMER	M	36,857	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 15, 2021	OMER	M	36,856	$4.10	$151,110	2,063,842 Direct	+1.82%	Acquired	357.3% (price as of 2026-08-21)
June 15, 2021	OMER	S 10b5-1	36,856	$15.02	$553,577	2,026,986 Direct	-1.79%	Disposed	24.8% (price as of 2026-08-21)
June 15, 2021	OMER	M	36,856	—	—	36,857 Direct	-50.00%	Disposed	(price as of 2026-08-21)
May 20, 2021	OMER	M	36,856	$4.10	$151,110	2,063,842 Direct	+1.82%	Acquired	357.3% (price as of 2026-08-21)
May 20, 2021	OMER	S 10b5-1	36,856	$14.96	$551,366	2,026,986 Direct	-1.79%	Disposed	25.3% (price as of 2026-08-21)
May 20, 2021	OMER	M	36,856	—	—	73,713 Direct	-33.33%	Disposed	(price as of 2026-08-21)
May 19, 2021	OMER	M	36,857	$4.10	$151,114	2,063,843 Direct	+1.82%	Acquired	357.3% (price as of 2026-08-21)
May 19, 2021	OMER	S 10b5-1	36,857	$17.07	$629,149	2,026,986 Direct	-1.79%	Disposed	9.8% (price as of 2026-08-21)
May 19, 2021	OMER	M	36,857	—	—	110,569 Direct	-25.00%	Disposed	(price as of 2026-08-21)
April 8, 2021	OMER	M	35,206	$4.10	$144,345	2,062,192 Direct	+1.74%	Acquired	357.3% (price as of 2026-08-21)
April 8, 2021	OMER	S 10b5-1	35,206	$17.76	$625,259	2,026,986 Direct	-1.71%	Disposed	5.6% (price as of 2026-08-21)
April 8, 2021	OMER	M	35,206	—	—	147,426 Direct	-19.28%	Disposed	(price as of 2026-08-21)
April 7, 2021	OMER	M	37,407	$4.10	$153,369	2,064,393 Direct	+1.85%	Acquired	357.3% (price as of 2026-08-21)
April 7, 2021	OMER	S 10b5-1	37,407	$17.91	$669,959	2,026,986 Direct	-1.81%	Disposed	4.7% (price as of 2026-08-21)
April 7, 2021	OMER	M	37,407	—	—	182,632 Direct	-17.00%	Disposed	(price as of 2026-08-21)
March 1, 2020	OMER	A	450,000	—	—	450,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 8, 2019	OMER	A	425,000	—	—	425,000 Direct	—	Acquired	(price as of 2026-08-21)
April 8, 2018	OMER	A	350,000	—	—	350,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 28, 2017	OMER	M	39,961	—	—	220,039 Direct	-15.37%	Disposed	(price as of 2026-08-21)
Dec. 28, 2017	OMER	M	102,040	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 28, 2017	OMER	M	39,961	$4.10	$163,840	2,026,986 Direct	+2.01%	Acquired	357.3% (price as of 2026-08-21)
Dec. 28, 2017	OMER	M	102,040	$2.45	$249,998	1,987,025 Direct	+5.41%	Acquired	665.3% (price as of 2026-08-21)
Feb. 26, 2017	OMER	A	375,000	—	—	375,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 7, 2016	OMER	M	102,044	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 7, 2016	OMER	S	102,044	$10.48	$1,069,421	1,884,985 Direct	-5.14%	Disposed	78.9% (price as of 2026-08-21)
Dec. 7, 2016	OMER	M	102,044	$0.98	$100,003	1,987,029 Direct	+5.41%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 6, 2016	OMER	M	102,040	—	—	102,044 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Dec. 6, 2016	OMER	S	102,040	$10.80	$1,102,032	1,884,985 Direct	-5.14%	Disposed	73.6% (price as of 2026-08-21)
Dec. 6, 2016	OMER	M	102,040	$0.98	$99,999	1,987,025 Direct	+5.41%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 5, 2016	OMER	A	400,000	—	—	400,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 5, 2016	OMER	M	102,040	—	—	204,084 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Dec. 5, 2016	OMER	S	102,040	$10.71	$1,092,848	1,884,985 Direct	-5.14%	Disposed	75.1% (price as of 2026-08-21)
Dec. 5, 2016	OMER	M	102,040	$0.98	$99,999	1,987,025 Direct	+5.41%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 2, 2016	OMER	M	102,040	$0.98	$99,999	1,805,862 Direct	+5.99%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 2, 2016	OMER	S 10b5-1	102,040	$11.00	$1,122,440	1,703,822 Direct	-5.65%	Disposed	70.5% (price as of 2026-08-21)
Dec. 2, 2016	OMER	M	181,163	$0.98	$177,540	1,884,985 Direct	+10.63%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 2, 2016	OMER	M	102,040	—	—	306,124 Direct	-25.00%	Disposed	(price as of 2026-08-21)
Dec. 2, 2016	OMER	M	181,163	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 1, 2016	OMER	M	106,521	$0.98	$104,391	1,810,343 Direct	+6.25%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 1, 2016	OMER	S 10b5-1	105,522	$11.56	$1,219,834	1,704,821 Direct	-5.83%	Disposed	62.2% (price as of 2026-08-21)
Dec. 1, 2016	OMER	S 10b5-1	999	$12.32	$12,308	1,703,822 Direct	-0.06%	Disposed	52.2% (price as of 2026-08-21)
Dec. 1, 2016	OMER	M	106,521	—	—	408,164 Direct	-20.70%	Disposed	(price as of 2026-08-21)
Nov. 30, 2016	OMER	M	97,559	$0.98	$95,608	1,801,381 Direct	+5.73%	Acquired	1813.3% (price as of 2026-08-21)
Nov. 30, 2016	OMER	S 10b5-1	97,559	$12.21	$1,191,195	1,703,822 Direct	-5.42%	Disposed	53.6% (price as of 2026-08-21)
Nov. 30, 2016	OMER	M	97,559	—	—	514,685 Direct	-15.93%	Disposed	(price as of 2026-08-21)
Feb. 19, 2016	OMER	A	400,000	—	—	400,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 14, 2016	OMER	M	100,000	—	—	181,163 Direct	-35.57%	Disposed	(price as of 2026-08-21)
Jan. 14, 2016	OMER	M	100,000	$0.98	$98,000	1,703,822 Direct	+6.24%	Acquired	1813.3% (price as of 2026-08-21)
Aug. 18, 2015	OMER	M	12,000	—	—	281,163 Direct	-4.09%	Disposed	(price as of 2026-08-21)
Aug. 18, 2015	OMER	M	12,000	$0.98	$11,760	1,603,822 Direct	+0.75%	Acquired	1813.3% (price as of 2026-08-21)
Jan. 28, 2015	OMER	M	32,000	—	—	293,163 Direct	-9.84%	Disposed	(price as of 2026-08-21)
Jan. 28, 2015	OMER	M	32,000	$0.98	$31,360	1,591,822 Direct	+2.05%	Acquired	1813.3% (price as of 2026-08-21)
Nov. 2, 2014	OMER	M	33,000	—	—	325,163 Direct	-9.21%	Disposed	(price as of 2026-08-21)
Nov. 2, 2014	OMER	M	33,000	$0.98	$32,340	1,559,822 Direct	+2.16%	Acquired	1813.3% (price as of 2026-08-21)
Oct. 29, 2014	OMER	A	50,000	—	—	450,000 Direct	+12.50%	Acquired	(price as of 2026-08-21)
Oct. 29, 2014	OMER	A	400,000	—	—	400,000 Direct	—	Acquired	(price as of 2026-08-21)
May 18, 2014	OMER	M	20,000	—	—	358,163 Direct	-5.29%	Disposed	(price as of 2026-08-21)
May 18, 2014	OMER	M	20,000	$0.98	$19,600	1,526,822 Direct	+1.33%	Acquired	1813.3% (price as of 2026-08-21)
Dec. 31, 2013	OMER	M	10,000	—	—	378,163 Direct	-2.58%	Disposed	(price as of 2026-08-21)
Dec. 31, 2013	OMER	M	10,000	$0.98	$9,800	1,506,822 Direct	+0.67%	Acquired	1813.3% (price as of 2026-08-21)
Oct. 2, 2013	OMER	A	25,000	—	—	25,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 25, 2013	OMER	A	350,000	—	—	350,000 Direct	—	Acquired	(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
July 22, 2026	OMER	Stock Option (right to buy)	Common Stock (1,000,000)	$9.84	July 22, 2036	1,000,000	Acquired
Sept. 21, 2022	OMER	Stock Option (right to buy)	Common Stock (650,000)	$3.93	Sept. 21, 2032	650,000	Acquired
July 2, 2021	OMER	Stock Option (right to buy)	Common Stock (550,000)	$14.99	July 1, 2031	550,000	Acquired
June 17, 2021	OMER	Stock Option (right to buy)	Common Stock (36,857)	$4.10	Jan. 7, 2022	36,857	Disposed
June 15, 2021	OMER	Stock Option (right to buy)	Common Stock (36,856)	$4.10	Jan. 7, 2022	36,856	Disposed
May 20, 2021	OMER	Stock Option (right to buy)	Common Stock (36,856)	$4.10	Jan. 7, 2022	36,856	Disposed
May 19, 2021	OMER	Stock Option (right to buy)	Common Stock (36,857)	$4.10	Jan. 7, 2022	36,857	Disposed
April 8, 2021	OMER	Stock Option (right to buy)	Common Stock (35,206)	$4.10	Jan. 7, 2022	35,206	Disposed
April 7, 2021	OMER	Stock Option (right to buy)	Common Stock (37,407)	$4.10	Jan. 7, 2022	37,407	Disposed
March 1, 2020	OMER	Stock Option (right to buy)	Common Stock (450,000)	$11.91	Feb. 28, 2030	450,000	Acquired
Feb. 8, 2019	OMER	Stock Option (right to buy)	Common Stock (425,000)	$13.45	Feb. 7, 2029	425,000	Acquired
April 8, 2018	OMER	Stock Option (Right to Buy)	Common Stock (350,000)	$13.58	April 7, 2028	350,000	Acquired
Dec. 28, 2017	OMER	Stock Option (Right to Buy)	Common Stock (39,961)	$4.10	Jan. 8, 2022	39,961	Disposed
Dec. 28, 2017	OMER	Stock Option (Right to Buy)	Common Stock (102,040)	$2.45	Dec. 29, 2017	102,040	Disposed
Feb. 26, 2017	OMER	Stock Option (Right to Buy)	Common Stock (375,000)	$11.55	Feb. 25, 2027	375,000	Acquired
Dec. 7, 2016	OMER	Stock Option (Right to Buy)	Common Stock (102,044)	$0.98	Dec. 11, 2016	102,044	Disposed
Dec. 6, 2016	OMER	Stock Option (Right to Buy)	Common Stock (102,040)	$0.98	Dec. 11, 2016	102,040	Disposed
Dec. 5, 2016	OMER	Stock Option (Right to Buy)	Common Stock (400,000)	$10.56	Dec. 4, 2026	400,000	Acquired
Dec. 5, 2016	OMER	Stock Option (Right to Buy)	Common Stock (102,040)	$0.98	Dec. 11, 2016	102,040	Disposed
Dec. 2, 2016	OMER	Stock Option (Right to Buy)	Common Stock (102,040)	$0.98	Dec. 11, 2016	102,040	Disposed
Dec. 2, 2016	OMER	Stock Option (Right to Buy)	Common Stock (181,163)	$0.98	Dec. 11, 2016	181,163	Disposed
Dec. 1, 2016	OMER	Stock Option (Right to Buy)	Common Stock (106,521)	$0.98	Dec. 11, 2016	106,521	Disposed
Nov. 30, 2016	OMER	Stock Option (Right to Buy)	Common Stock (97,559)	$0.98	Dec. 11, 2016	97,559	Disposed
Feb. 19, 2016	OMER	Stock Option (Right to Buy)	Common Stock (400,000)	$10.27	Feb. 18, 2026	400,000	Acquired
Jan. 14, 2016	OMER	Stock Option (Right to Buy)	Common Stock (100,000)	$0.98	Dec. 11, 2016	100,000	Disposed
Aug. 18, 2015	OMER	Stock Option (Right to Buy)	Common Stock (12,000)	$0.98	Dec. 11, 2016	12,000	Disposed
Jan. 28, 2015	OMER	Stock Option (Right to Buy)	Common Stock (32,000)	$0.98	Dec. 11, 2016	32,000	Disposed
Nov. 2, 2014	OMER	Stock Option (Right to Buy)	Common Stock (33,000)	$0.98	Dec. 11, 2016	33,000	Disposed
Oct. 29, 2014	OMER	Stock Option (Right to Buy)	Common Stock (50,000)	$11.58	Oct. 28, 2024	50,000	Acquired
Oct. 29, 2014	OMER	Stock Option (Right to Buy)	Common Stock (400,000)	$11.58	Oct. 28, 2024	400,000	Acquired
May 18, 2014	OMER	Stock Option (Right to Buy)	Common Stock (20,000)	$0.98	Dec. 11, 2016	20,000	Disposed
Dec. 31, 2013	OMER	Stock Option (Right to Buy)	Common Stock (10,000)	$0.98	Dec. 11, 2016	10,000	Disposed
Oct. 2, 2013	OMER	Stock Option (Right to Buy)	Common Stock (25,000)	$11.19	Oct. 1, 2023	25,000	Acquired
Sept. 25, 2013	OMER	Stock Option (Right to Buy)	Common Stock (350,000)	$9.37	Sept. 24, 2023	350,000	Acquired

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

Initial ownership (Form 3) 5 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Oct. 7, 2009	OMER	Common Stock	1,475,280	Direct
Oct. 7, 2009	OMER	Employee Stock Option (right to buy)→ Common Stock (1,542)	1,542	Direct
Oct. 7, 2009	OMER	Employee Stock Option (right to buy)→ Common Stock (612,244)	612,244	Direct
Oct. 7, 2009	OMER	Employee Stock Option (right to buy)→ Common Stock (408,163)	408,163	Direct
Oct. 7, 2009	OMER	Employee Stock Options (right to buy)→ Common Stock (102,040)	102,040	Direct

Compensation (DEF 14A)

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

OMER

CEO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$960,947	$926,214	—	—	—	—	$25,247	$3,764,151
2023	$917,308	$5,024,179	—	—	—	—	—	$7,689,843
2022	$882,027	$890,000	—	—	—	—	—	$3,728,686

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