Martin I Freed

Insider

First SEC filing: June 11, 2026 · Latest: June 11, 2026

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 14 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 10, 2026	SLDB	A	77,500	—	—	77,500 Direct	—	Acquired	(price as of 2026-08-21)
June 12, 2025	SLDB	A	77,500	—	—	77,500 Direct	—	Acquired	(price as of 2026-08-21)
June 11, 2024	SLDB	A	34,400	—	—	34,400 Direct	—	Acquired	(price as of 2026-08-21)
June 6, 2023	SLDB	A	9,650	—	—	9,650 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 13, 2022	SLDB	A	9,650	—	—	9,650 Direct	—	Acquired	(price as of 2026-08-21)
June 7, 2022	SLDB	A	51,000	—	—	51,000 Direct	—	Acquired	(price as of 2026-08-21)
June 16, 2021	SLDB	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-21)
April 27, 2021	SLDB	A	25,000	—	—	25,000 Direct	—	Acquired	(price as of 2026-08-21)
June 16, 2020	SLDB	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
June 16, 2020	SLDB	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-21)
July 25, 2019	SLDB	A	53,763	$4.65	$249,998	53,763 Direct	—	Acquired	-86.5% (price as of 2026-08-21)
June 13, 2019	SLDB	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 13, 2018	SLDB	A	16,331	—	—	16,331 Direct	—	Acquired	(price as of 2026-08-21)
July 25, 2018	SLDB	A	3,669	—	—	3,669 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.

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
June 10, 2026	SLDB	Director Stock Option (Right to Buy)	Common Stock (77,500)	$6.61	June 10, 2036	77,500	Acquired
June 12, 2025	SLDB	Director Stock Option (Right to Buy)	Common Stock (77,500)	$4.58	June 12, 2035	77,500	Acquired
June 11, 2024	SLDB	Director Stock Option (Right to Buy)	Common Stock (34,400)	$7.51	June 11, 2034	34,400	Acquired
June 6, 2023	SLDB	Director Stock Option (Right to Buy)	Common Stock (9,650)	$6.37	June 6, 2033	9,650	Acquired
Dec. 13, 2022	SLDB	Director Stock Option (Right to Buy)	Common Stock (9,650)	$6.47	Dec. 13, 2032	9,650	Acquired
June 7, 2022	SLDB	Director Stock Option (Right to Buy)	Common Stock (51,000)	$0.62	June 7, 2032	51,000	Acquired
June 16, 2021	SLDB	Director Stock Option (Right to Buy)	Common Stock (30,000)	$3.94	June 16, 2031	30,000	Acquired
April 27, 2021	SLDB	Stock Option (Right to Buy)	Common Stock (25,000)	$5.23	April 27, 2031	25,000	Acquired
June 16, 2020	SLDB	Director Stock Option (Right to Buy)	Common Stock (10,000)	$3.03	June 16, 2030	10,000	Acquired
June 16, 2020	SLDB	Director Stock Option (Right to Buy)	Common Stock (30,000)	$3.03	June 16, 2030	30,000	Acquired
June 13, 2019	SLDB	Director Stock Option (Right to Buy)	Common Stock (10,000)	$5.26	June 13, 2029	10,000	Acquired
Dec. 13, 2018	SLDB	Director Stock Option (Right to Buy)	Common Stock (16,331)	$23.58	Dec. 13, 2028	16,331	Acquired
July 25, 2018	SLDB	Director Stock Option (Right to Buy)	Common Stock (3,669)	$37.89	July 25, 2028	3,669	Acquired

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