Charles Pauling Semba

Insider

First SEC filing: Jan. 3, 2025 · Latest: Jan. 3, 2025

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 8 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

8 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 1, 2026	DMAC	A	40,412	—	—	40,412 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 2, 2025	DMAC	A	5,290	$5.34	$28,249	44,608 Direct	+13.45%	Acquired	24.9% (price as of 2026-08-20)
June 1, 2024	DMAC	A	28,472	—	—	28,472 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 2, 2024	DMAC	A	9,375	$2.80	$26,250	39,318 Direct	+31.31%	Acquired	138.2% (price as of 2026-08-20)
June 23, 2023	DMAC	P	12,787	$3.91	$49,997	29,943 Direct	+74.53%	Acquired	70.6% (price as of 2026-08-20)
June 1, 2023	DMAC	A	16,968	—	—	16,968 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2023	DMAC	A	17,156	$1.53	$26,249	17,156 Direct	—	Acquired	335.9% (price as of 2026-08-20)
June 1, 2022	DMAC	A	13,222	—	—	13,222 Direct	—	Acquired	(price as of 2026-08-20)
July 15, 2021	DMAC	A	18,786	—	—	18,786 Direct	—	Acquired	(price as of 2026-08-20)

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 1, 2026	DMAC	Stock Option (right to buy)	Voting Common Shares (40,412)	$5.84	June 1, 2036	40,412	Acquired
June 1, 2024	DMAC	Stock Option (right to buy)	Common Shares (28,472)	$2.90	May 31, 2034	28,472	Acquired
June 1, 2023	DMAC	Stock Option (right to buy)	Common Shares (16,968)	$2.73	May 31, 2033	16,968	Acquired
June 1, 2022	DMAC	Stock Option (right to buy)	Common Shares (13,222)	$2.45	May 31, 2032	13,222	Acquired
July 15, 2021	DMAC	Stock Option (right to buy)	Common Shares (18,786)	$3.64	July 14, 2031	18,786	Acquired

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