Steve Dubin

Insider

First SEC filing: Sept. 18, 2020 · Latest: Sept. 18, 2020

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.

Insider at

ACET buying June 30, 2023

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 26 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

26 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 21, 2026	ACET	A	4,200	—	—	4,200 Direct	—	Acquired	(price as of 2026-08-20)
June 11, 2025	ACET	A	26,400	—	—	26,400 Direct	—	Acquired	(price as of 2026-08-20)
June 11, 2025	ACET	A	5,900	—	—	22,700 Direct	+35.12%	Acquired	(price as of 2026-08-20)
Aug. 21, 2024	ACET	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 21, 2024	ACET	D	18,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 21, 2024	ACET	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 21, 2024	ACET	D	26,400	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 21, 2024	ACET	A	26,400	—	—	26,400 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 21, 2024	ACET	D	18,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 21, 2024	ACET	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 21, 2024	ACET	D	30,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 5, 2024	ACET	A	26,400	—	—	26,400 Direct	—	Acquired	(price as of 2026-08-20)
June 5, 2024	ACET	A	5,900	—	—	16,800 Direct	+54.13%	Acquired	(price as of 2026-08-20)
Aug. 14, 2023	ACET	A	26,400	—	—	26,400 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 14, 2023	ACET	D	26,400	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 14, 2023	ACET	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 14, 2023	ACET	D	18,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 14, 2023	ACET	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 14, 2023	ACET	D	18,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 14, 2023	ACET	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 14, 2023	ACET	D	30,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 30, 2023	ACET	P	5,000	$2.40	$12,000	10,900 Direct	+84.75%	Acquired	-74.9% (price as of 2026-08-20)
June 1, 2023	ACET	A	26,400	—	—	26,400 Direct	—	Acquired	(price as of 2026-08-20)
June 1, 2023	ACET	A	5,900	—	—	5,900 Direct	—	Acquired	(price as of 2026-08-20)
June 2, 2022	ACET	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
April 30, 2021	ACET	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 17, 2020	ACET	A	30,000	—	—	30,000 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.

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
June 21, 2026	ACET	Stock Option (Right to Buy)	Common Stock (4,200)	$8.10	June 20, 2036	4,200	Acquired
June 11, 2025	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	$0.78	June 10, 2035	26,400	Acquired
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	—	April 29, 2031	18,500	Acquired
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	$2.14	June 1, 2032	18,500	Disposed
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	—	June 1, 2032	18,500	Acquired
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	$2.14	May 31, 2033	26,400	Disposed
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	—	May 31, 2033	26,400	Acquired
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	$2.14	April 29, 2031	18,500	Disposed
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (30,000)	—	Sept. 16, 2030	30,000	Acquired
Aug. 21, 2024	ACET	Stock Option (Right to Buy)	Common Stock (30,000)	$2.14	Sept. 16, 2030	30,000	Disposed
June 5, 2024	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	$1.44	June 4, 2034	26,400	Acquired
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	—	May 31, 2033	26,400	Acquired
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	$5.20	May 31, 2033	26,400	Disposed
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	—	June 1, 2032	18,500	Acquired
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	$11.49	June 1, 2032	18,500	Disposed
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	—	April 29, 2031	18,500	Acquired
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	$15.93	April 29, 2031	18,500	Disposed
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (30,000)	—	Sept. 16, 2030	30,000	Acquired
Aug. 14, 2023	ACET	Stock Option (Right to Buy)	Common Stock (30,000)	$16.11	Sept. 16, 2030	30,000	Disposed
June 1, 2023	ACET	Stock Option (Right to Buy)	Common Stock (26,400)	$5.20	May 31, 2033	26,400	Acquired
June 2, 2022	ACET	Stock Option (Right to Buy)	Common stock (18,500)	$11.49	June 1, 2032	18,500	Acquired
April 30, 2021	ACET	Stock Option (Right to Buy)	Common Stock (18,500)	$15.93	April 29, 2031	18,500	Acquired
Sept. 17, 2020	ACET	Stock Option (Right to Buy)	Common Stock (30,000)	$16.11	Sept. 16, 2030	30,000	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Sept. 18, 2020	ACET	Non-Qualified Stock Option (right to buy)→ Common Stock (30,000)	30,000	Direct