David T Howton

Insider

First SEC filing: Sept. 7, 2011 · Latest: Sept. 7, 2011

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

Insider transactions

0 buys (P) 4 sells (S) Net: $-433,595 + 81 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

81 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 18, 2026	SLDB	S	7,469	$5.82	$43,470	105,077 Direct	-6.64%	Disposed	59.5% (price as of 2026-08-20)
Feb. 13, 2026	SLDB	M	14,687	—	—	29,376 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Feb. 13, 2026	SLDB	M	14,687	—	—	112,546 Direct	+15.01%	Acquired	(price as of 2026-08-20)
Feb. 4, 2026	SLDB	S	18,894	$6.44	$121,677	97,859 Direct	-16.18%	Disposed	44.2% (price as of 2026-08-20)
Feb. 2, 2026	SLDB	S	37,771	$6.44	$243,245	116,753 Direct	-24.44%	Disposed	44.2% (price as of 2026-08-20)
Jan. 31, 2026	SLDB	M	42,275	—	—	126,825 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Jan. 31, 2026	SLDB	M	42,275	—	—	154,254 Direct	+37.75%	Acquired	(price as of 2026-08-20)
Jan. 29, 2026	SLDB	A	79,341	—	—	79,341 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 29, 2026	SLDB	A	105,100	—	—	105,100 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 29, 2026	SLDB	A	210,200	—	—	210,200 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 29, 2026	SLDB	M	79,341	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 29, 2026	SLDB	M	79,341	—	—	112,249 Direct	+241.10%	Acquired	(price as of 2026-08-20)
Dec. 3, 2025	SLDB	S	4,932	$5.11	$25,203	32,908 Direct	-13.03%	Disposed	81.7% (price as of 2026-08-20)
Dec. 2, 2025	SLDB	M	13,051	—	—	13,052 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Dec. 2, 2025	SLDB	M	13,051	—	—	37,840 Direct	+52.65%	Acquired	(price as of 2026-08-20)
Aug. 14, 2025	SLDB	A	75,000	—	—	75,000 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 14, 2025	SLDB	A	150,000	—	—	150,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 14, 2025	SLDB	S	5,561	$3.96	$22,022	24,789 Direct	-18.32%	Disposed	134.5% (price as of 2026-08-20)
Feb. 13, 2025	SLDB	M	14,687	—	—	44,063 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Feb. 13, 2025	SLDB	M	14,687	—	—	30,350 Direct	+93.77%	Acquired	(price as of 2026-08-20)
Jan. 31, 2025	SLDB	A	169,100	—	—	169,100 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 3, 2024	SLDB	S	5,072	$5.60	$28,403	15,663 Direct	-24.46%	Disposed	65.8% (price as of 2026-08-20)
Dec. 2, 2024	SLDB	M	13,051	—	—	26,103 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Dec. 2, 2024	SLDB	M	13,051	—	—	20,735 Direct	+169.85%	Acquired	(price as of 2026-08-20)
Feb. 13, 2024	SLDB	A	58,750	—	—	58,750 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 13, 2024	SLDB	A	117,500	—	—	117,500 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 4, 2023	SLDB	S 10b5-1	5,367	$2.78	$14,920	7,684 Direct	-41.12%	Disposed	234.0% (price as of 2026-08-20)
Dec. 2, 2023	SLDB	M	13,051	—	—	39,154 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Dec. 2, 2023	SLDB	M	13,051	—	—	13,051 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 2, 2022	SLDB	A	104,410	—	—	104,410 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 2, 2022	SLDB	A	52,205	—	—	52,205 Direct	—	Acquired	(price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	45,000	—	—	7,708 Direct	-85.38%	Disposed	(price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	56,984	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	1,858	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	1,280	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 22, 2020	SRPT	S 10b5-1	55,270	$171.50	$9,478,805	31,871 Direct	-63.43%	Disposed	-88.8% (price as of 2026-08-20)
June 22, 2020	SRPT	S 10b5-1	35,757	$170.59	$6,099,787	87,141 Direct	-29.09%	Disposed	-88.8% (price as of 2026-08-20)
June 22, 2020	SRPT	S 10b5-1	8,086	$169.56	$1,371,062	122,898 Direct	-6.17%	Disposed	-88.7% (price as of 2026-08-20)
June 22, 2020	SRPT	S 10b5-1	6,009	$168.61	$1,013,177	130,984 Direct	-4.39%	Disposed	-88.6% (price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	45,000	$29.03	$1,306,350	136,993 Direct	+48.92%	Acquired	-34.0% (price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	56,984	$23.85	$1,359,068	91,993 Direct	+162.77%	Acquired	-19.7% (price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	1,858	$13.71	$25,473	35,009 Direct	+5.60%	Acquired	39.7% (price as of 2026-08-20)
June 22, 2020	SRPT	M 10b5-1	1,280	$13.71	$17,549	33,151 Direct	+4.02%	Acquired	39.7% (price as of 2026-08-20)
Feb. 28, 2020	SRPT	A	6,700	—	—	31,871 Direct	+26.62%	Acquired	(price as of 2026-08-20)
Feb. 28, 2020	SRPT	A	37,500	—	—	37,500 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 13, 2019	SRPT	M 10b5-1	59,421	—	—	56,984 Direct	-51.05%	Disposed	(price as of 2026-08-20)
Dec. 13, 2019	SRPT	M 10b5-1	18,579	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 13, 2019	SRPT	S 10b5-1	78,000	$125.50	$9,789,000	25,171 Direct	-75.60%	Disposed	-84.7% (price as of 2026-08-20)
Dec. 13, 2019	SRPT	M 10b5-1	59,421	$23.85	$1,417,191	103,171 Direct	+135.82%	Acquired	-19.7% (price as of 2026-08-20)
Dec. 13, 2019	SRPT	M 10b5-1	18,579	$13.90	$258,248	43,750 Direct	+73.81%	Acquired	37.8% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	7,900	—	—	5,118 Direct	-60.69%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	5,590	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	52	—	—	18 Direct	-74.29%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	2,440	—	—	2,470 Direct	-49.69%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	M 10b5-1	8,580	—	—	18,579 Direct	-31.59%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	M 10b5-1	4,025	—	—	1,858 Direct	-68.42%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	M 10b5-1	5,685	—	—	1,280 Direct	-81.62%	Disposed	(price as of 2026-08-20)
Nov. 22, 2019	SRPT	F	2,804	$107.02	$300,084	25,171 Direct	-10.02%	Disposed	-82.1% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	7,900	$23.85	$188,415	27,975 Direct	+39.35%	Acquired	-19.7% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	5,590	$13.90	$77,701	20,075 Direct	+38.59%	Acquired	37.8% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	52	$13.71	$713	14,485 Direct	+0.36%	Acquired	39.7% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M	2,440	$13.71	$33,452	14,433 Direct	+20.35%	Acquired	39.7% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	S 10b5-1	2,957	$105.00	$310,485	11,993 Direct	-19.78%	Disposed	-81.8% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	S 10b5-1	3,753	$105.00	$394,065	14,950 Direct	-20.07%	Disposed	-81.8% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	S 10b5-1	18,290	$105.00	$1,920,450	18,703 Direct	-49.44%	Disposed	-81.8% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M 10b5-1	8,580	$13.90	$119,262	36,993 Direct	+30.20%	Acquired	37.8% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M 10b5-1	4,025	$13.71	$55,183	28,413 Direct	+16.50%	Acquired	39.7% (price as of 2026-08-20)
Nov. 22, 2019	SRPT	M 10b5-1	5,685	$13.71	$77,941	24,388 Direct	+30.40%	Acquired	39.7% (price as of 2026-08-20)
March 28, 2019	SRPT	F	2,362	$118.68	$280,322	18,703 Direct	-11.21%	Disposed	-83.9% (price as of 2026-08-20)
March 28, 2019	SRPT	A	5,319	—	—	21,065 Direct	+33.78%	Acquired	(price as of 2026-08-20)
March 4, 2019	SRPT	A	45,000	—	—	45,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2019	SRPT	D	3,825	—	—	15,746 Direct	-19.54%	Disposed	(price as of 2026-08-20)
Feb. 1, 2019	SRPT	M 10b5-1	16,827	$23.85	$401,324	116,405 Direct	-12.63%	Disposed	-19.7% (price as of 2026-08-20)
Feb. 1, 2019	SRPT	M 10b5-1	1,548	$13.71	$21,223	5,883 Direct	-20.83%	Disposed	39.7% (price as of 2026-08-20)
Feb. 1, 2019	SRPT	M 10b5-1	3,125	$13.71	$42,844	6,965 Direct	-30.97%	Disposed	39.7% (price as of 2026-08-20)
Feb. 1, 2019	SRPT	S 10b5-1	30,000	$140.00	$4,200,000	19,571 Direct	-60.52%	Disposed	-86.3% (price as of 2026-08-20)
Feb. 1, 2019	SRPT	M 10b5-1	16,827	$23.85	$401,324	49,571 Direct	+51.39%	Acquired	-19.7% (price as of 2026-08-20)
Feb. 1, 2019	SRPT	M 10b5-1	1,548	$13.71	$21,223	32,744 Direct	+4.96%	Acquired	39.7% (price as of 2026-08-20)
Feb. 1, 2019	SRPT	M 10b5-1	3,125	$13.71	$42,844	31,196 Direct	+11.13%	Acquired	39.7% (price as of 2026-08-20)
Aug. 8, 2018	SRPT	F	6,800	$121.02	$822,936	28,071 Direct	-19.50%	Disposed	-84.2% (price as of 2026-08-20)
July 16, 2018	SRPT	M	37,848	$13.90	$526,087	27,159 Direct	-58.22%	Disposed	37.8% (price as of 2026-08-20)
July 16, 2018	SRPT	M	9,056	$13.71	$124,158	10,090 Direct	-47.30%	Disposed	39.7% (price as of 2026-08-20)
July 16, 2018	SRPT	M	3,096	$13.71	$42,446	7,431 Direct	-29.41%	Disposed	39.7% (price as of 2026-08-20)
July 16, 2018	SRPT	S 10b5-1	37,848	$136.46	$5,164,738	34,871 Direct	-52.05%	Disposed	-86.0% (price as of 2026-08-20)
July 16, 2018	SRPT	M	37,848	$13.90	$526,087	72,719 Direct	+108.54%	Acquired	37.8% (price as of 2026-08-20)
July 16, 2018	SRPT	S 10b5-1	9,056	$136.46	$1,235,782	34,871 Direct	-20.62%	Disposed	-86.0% (price as of 2026-08-20)
July 16, 2018	SRPT	M	9,056	$13.71	$124,158	43,927 Direct	+25.97%	Acquired	39.7% (price as of 2026-08-20)
July 16, 2018	SRPT	S 10b5-1	3,096	$136.46	$422,480	34,871 Direct	-8.15%	Disposed	-86.0% (price as of 2026-08-20)
July 16, 2018	SRPT	M	3,096	$13.71	$42,446	37,967 Direct	+8.88%	Acquired	39.7% (price as of 2026-08-20)
May 22, 2018	SRPT	M	5,319	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 22, 2018	SRPT	F	1,566	$89.22	$139,719	34,871 Direct	-4.30%	Disposed	-78.5% (price as of 2026-08-20)
May 22, 2018	SRPT	M	5,319	—	—	36,437 Direct	+17.09%	Acquired	(price as of 2026-08-20)
March 15, 2018	SRPT	F	609	$81.22	$49,463	31,118 Direct	-1.92%	Disposed	-76.4% (price as of 2026-08-20)
March 15, 2018	SRPT	M	2,074	—	—	13,018 Direct	-13.74%	Disposed	(price as of 2026-08-20)
March 15, 2018	SRPT	M	403	—	—	5,590 Direct	-6.72%	Disposed	(price as of 2026-08-20)
March 15, 2018	SRPT	M	23	—	—	70 Direct	-24.73%	Disposed	(price as of 2026-08-20)
March 15, 2018	SRPT	M	2,074	$23.85	$49,465	31,727 Direct	+6.99%	Acquired	-19.7% (price as of 2026-08-20)
March 15, 2018	SRPT	F	68	$81.22	$5,523	29,653 Direct	-0.23%	Disposed	-76.4% (price as of 2026-08-20)
March 15, 2018	SRPT	M	403	$13.90	$5,602	29,721 Direct	+1.37%	Acquired	37.8% (price as of 2026-08-20)
March 15, 2018	SRPT	F	3	$81.22	$244	29,318 Direct	-0.01%	Disposed	-76.4% (price as of 2026-08-20)

Showing latest 100 of 148 transactions

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
Feb. 13, 2026	SLDB	Restricted Stock Units	Common Stock (14,687)	—	—	14,687	Disposed
Jan. 31, 2026	SLDB	Restricted Stock Units	Common Stock (42,275)	—	—	42,275	Disposed
Jan. 29, 2026	SLDB	Restricted Stock Units	Common Stock (79,341)	—	—	79,341	Acquired
Jan. 29, 2026	SLDB	Restricted Stock Units	Common Stock (105,100)	—	—	105,100	Acquired
Jan. 29, 2026	SLDB	Employee Stock Option (Right to Buy)	Common Stock (210,200)	$6.60	Jan. 29, 2036	210,200	Acquired
Jan. 29, 2026	SLDB	Performance Stock Units	Common Stock (79,341)	—	—	79,341	Disposed
Dec. 2, 2025	SLDB	Restricted Stock Units	Common Stock (13,051)	—	—	13,051	Disposed
Aug. 14, 2025	SLDB	Restricted Stock Units	Common Stock (75,000)	—	—	75,000	Acquired
Aug. 14, 2025	SLDB	Employee Stock Option (Right to Buy)	Common Stock (150,000)	$6.17	Aug. 14, 2035	150,000	Acquired
Feb. 13, 2025	SLDB	Restricted Stock Units	Common Stock (14,687)	—	—	14,687	Disposed
Jan. 31, 2025	SLDB	Restricted Stock Units	Common Stock (169,100)	—	—	169,100	Acquired
Dec. 2, 2024	SLDB	Restricted Stock Units	Common Stock (13,051)	—	—	13,051	Disposed
Feb. 13, 2024	SLDB	Restricted Stock Units	Common Stock (58,750)	—	—	58,750	Acquired
Feb. 13, 2024	SLDB	Employee Stock Option (Right to Buy)	Common Stock (117,500)	$7.85	Feb. 13, 2034	117,500	Acquired
Dec. 2, 2023	SLDB	Restricted Stock Units	Common Stock (13,051)	—	—	13,051	Disposed
Dec. 2, 2022	SLDB	Stock Option (Right to Buy)	Common Stock (104,410)	$6.77	Dec. 2, 2032	104,410	Acquired
Dec. 2, 2022	SLDB	Restricted Stock Units	Common Stock (52,205)	—	—	52,205	Acquired
June 22, 2020	SRPT	Stock option (right to buy)	Common Stock (45,000)	$29.03	Feb. 28, 2024	45,000	Disposed
June 22, 2020	SRPT	Stock option (right to buy)	Common Stock (56,984)	$23.85	Nov. 5, 2022	56,984	Disposed
June 22, 2020	SRPT	Stock option (right to buy)	Common Stock (1,858)	$13.71	Feb. 28, 2026	1,858	Disposed
June 22, 2020	SRPT	Stock option (right to buy)	Common Stock (1,280)	$13.71	Feb. 28, 2026	1,280	Disposed
Feb. 28, 2020	SRPT	Stock option (right to buy)	Common Stock (37,500)	$114.47	Feb. 28, 2030	37,500	Acquired
Dec. 13, 2019	SRPT	Stock option (right to buy)	Common Stock (59,421)	$23.85	Nov. 5, 2022	59,421	Disposed
Dec. 13, 2019	SRPT	Stock option (right to buy)	Common Stock (18,579)	$13.90	Feb. 27, 2025	18,579	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (7,900)	$23.85	Nov. 5, 2022	7,900	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (5,590)	$13.90	Feb. 27, 2025	5,590	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (52)	$13.71	Feb. 28, 2026	52	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (2,440)	$13.71	Feb. 28, 2026	2,440	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (8,580)	$13.90	Feb. 27, 2025	8,580	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (4,025)	$13.71	Feb. 28, 2026	4,025	Disposed
Nov. 22, 2019	SRPT	Stock option (right to buy)	Common Stock (5,685)	$13.71	Feb. 28, 2026	5,685	Disposed
March 4, 2019	SRPT	Stock option (right to buy)	Common Stock (45,000)	$145.48	March 4, 2029	45,000	Acquired
Feb. 1, 2019	SRPT	Stock Option (right to buy)	Common Stock (16,827)	$23.85	Nov. 5, 2022	16,827	Disposed
Feb. 1, 2019	SRPT	Stock Option (right to buy)	Common Stock (1,548)	$13.71	Sept. 19, 2025	1,548	Disposed
Feb. 1, 2019	SRPT	Stock Option (right to buy)	Common Stock (3,125)	$13.71	Feb. 28, 2026	3,125	Disposed
July 16, 2018	SRPT	Stock option (right to buy)	Common Stock (37,848)	$13.90	Feb. 27, 2025	37,848	Disposed
July 16, 2018	SRPT	Stock option (right to buy)	Common Stock (9,056)	$13.71	Feb. 28, 2026	9,056	Disposed
July 16, 2018	SRPT	Stock option (right to buy)	Common Stock (3,096)	$13.71	Feb. 28, 2026	3,096	Disposed
May 22, 2018	SRPT	Restricted Stock Units	Common Stock (5,319)	—	—	5,319	Disposed
March 15, 2018	SRPT	Stock option (right to buy)	Common Stock (2,074)	$23.85	Nov. 5, 2022	2,074	Disposed
March 15, 2018	SRPT	Stock option (right to buy)	Common Stock (403)	$13.90	Feb. 27, 2025	403	Disposed
March 15, 2018	SRPT	Stock option (right to buy)	Common Stock (23)	$13.71	Feb. 28, 2026	23	Disposed
March 5, 2018	SRPT	Stock option (right to buy)	Common Stock (70,000)	$71.45	March 5, 2028	70,000	Acquired
Aug. 3, 2017	SRPT	Restricted Stock Units	Common Stock (10,639)	—	—	10,639	Disposed
July 21, 2017	SRPT	Incentive Stock Option (right to buy)	Common Stock (676)	$23.85	Nov. 5, 2022	676	Disposed
July 21, 2017	SRPT	Incentive Stock Option (right to buy)	Common Stock (324)	$13.71	Feb. 28, 2026	324	Disposed
July 20, 2017	SRPT	Non-Qualified Stock Options (right to buy)	Common Stock (5,944)	$13.71	Feb. 28, 2026	5,944	Disposed
July 20, 2017	SRPT	Non-Qualified Stock Options (right to buy)	Common Stock (19,056)	$13.71	Feb. 28, 2026	19,056	Disposed
March 10, 2017	SRPT	Incentive Stock Option (right to buy)	Common Stock (4,411)	$32.63	March 10, 2027	4,411	Acquired
March 10, 2017	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (25,589)	$32.63	March 10, 2027	25,589	Acquired
Nov. 9, 2016	SRPT	Incentive Stock Option (right to buy)	Common Stock (1,000)	$23.85	Nov. 5, 2022	1,000	Disposed
Sept. 22, 2016	SRPT	Non-Qualified Stock Options (right to buy)	Common Stock (7,000)	$13.90	Feb. 27, 2025	7,000	Disposed
Sept. 19, 2016	SRPT	Non-Qualified Stock Options (right to buy)	Common Stock (8,000)	$13.90	Feb. 27, 2025	8,000	Disposed
Feb. 29, 2016	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (25,090)	$13.71	Feb. 28, 2026	25,090	Acquired
Feb. 29, 2016	SRPT	Incentive Stock Option (right to buy)	Common Stock (4,910)	$13.71	Feb. 28, 2026	4,910	Acquired
Feb. 29, 2016	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (29,583)	$13.71	Feb. 28, 2026	29,583	Acquired
Feb. 29, 2016	SRPT	Incentive Stock Option (right to buy)	Common Stock (417)	$13.71	Feb. 28, 2026	417	Acquired
Feb. 27, 2015	SRPT	Incentive Stock Option (right to buy)	Common Stock (5,993)	$13.90	Feb. 27, 2025	5,993	Acquired
Feb. 27, 2015	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (80,007)	$13.90	Feb. 27, 2025	80,007	Acquired
Feb. 27, 2015	SRPT	Incentive Stock Option (right to buy)	Common Stock (9,603)	$13.90	Feb. 27, 2025	9,603	Acquired
Feb. 27, 2015	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (76,397)	$13.90	Feb. 27, 2025	76,397	Acquired
Feb. 28, 2014	SRPT	Incentive Stock Option (right to buy)	Common Stock (2,292)	$29.03	Feb. 28, 2024	2,292	Acquired
Feb. 28, 2014	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (52,708)	$29.03	Feb. 28, 2024	52,708	Acquired
June 4, 2013	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (45,000)	$34.92	June 4, 2023	45,000	Disposed
June 4, 2013	SRPT	Non-Qualified Stock Option (right to buy)	Common Stock (42,137)	$34.92	June 4, 2023	42,137	Disposed
June 4, 2013	SRPT	Incentive Stock Option (right to buy)	Common Stock (2,863)	$34.92	June 4, 2023	2,863	Disposed
Nov. 5, 2012	SRPT	Stock Option (right to buy)	Common Stock (150,000)	$23.85	Nov. 5, 2022	150,000	Disposed
Feb. 2, 2012	VRTX	Stock Option	Common Stock (68,750)	$37.86	Feb. 1, 2022	68,750	Acquired

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

Initial ownership (Form 3) 7 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 7, 2011	VRTX	Common Stock	9,599	Direct
Sept. 7, 2011	VRTX	Common Stock	264	Indirect
Sept. 7, 2011	VRTX	Stock Options→ Common Stock (25,000)	25,000	Direct
Sept. 7, 2011	VRTX	Stock Options→ Common Stock (15,000)	15,000	Direct
Sept. 7, 2011	VRTX	Stock Options→ Common Stock (7,500)	7,500	Direct
Sept. 7, 2011	VRTX	Stock Options→ Common Stock (15,000)	15,000	Direct
Sept. 7, 2011	VRTX	Stock Options→ Common Stock (7,500)	7,500	Direct

Compensation (DEF 14A)

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

SRPT

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2020	$470,695	—	$1,050,929	$3,802,549	$221,625	—	$157,280	$5,703,078
2019	$458,844	—	—	$3,464,825	$259,636	—	$13,318	$4,196,622
2018	$438,185	—	—	$2,412,445	$265,628	—	$13,118	$3,129,375

VRTX

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2012	$347,231	—	$384,783	$1,847,031	—	—	$868,853	$3,447,898

SLDB

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$513,422	$265,696	—	—	—	—	$12,600	$2,588,827
2024	$473,200	$189,280	—	—	—	—	$12,420	$2,563,014
2023	$455,000	$182,000	—	—	—	—	$11,880	$648,880

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