George Parmer

Insider

First SEC filing: Nov. 30, 2020 · Latest: Nov. 30, 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

AMST buying April 28, 2026

Insider transactions

3 buys (P) 0 sells (S) Net: $351,219 + 31 non-open-market transactions below Avg return of open purchases vs now: -34.7% 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

31 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 30, 2026	AMST	A	9,023	—	—	76,910 Direct	+13.29%	Acquired	(price as of 2026-08-20)
April 28, 2026	AMST	P	243,902	—	—	243,902 Direct	—	Acquired	(price as of 2026-08-20)
April 28, 2026	AMST	P	243,902	—	—	243,902 Direct	—	Acquired	(price as of 2026-08-20)
April 28, 2026	AMST	P	243,902	$1.44	$351,219	566,962 Direct	+75.50%	Acquired	-34.7% (price as of 2026-08-20)
March 31, 2026	AMST	A	6,522	—	—	67,887 Direct	+10.63%	Acquired	(price as of 2026-08-20)
March 7, 2026	AMST	M	41,322	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 7, 2026	AMST	M	41,322	—	—	323,060 Direct	+14.67%	Acquired	(price as of 2026-08-20)
Feb. 6, 2026	AMST	A	49,751	—	—	49,751 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 31, 2025	AMST	A	6,349	—	—	61,365 Direct	+11.54%	Acquired	(price as of 2026-08-20)
Sept. 30, 2025	AMST	A	3,934	—	—	55,016 Direct	+7.70%	Acquired	(price as of 2026-08-20)
June 30, 2025	AMST	A	4,461	—	—	51,082 Direct	+9.57%	Acquired	(price as of 2026-08-20)
March 31, 2025	AMST	A	4,959	—	—	46,621 Direct	+11.90%	Acquired	(price as of 2026-08-20)
March 7, 2025	AMST	A	41,322	—	—	41,322 Direct	—	Acquired	(price as of 2026-08-20)
March 7, 2025	AMST	A	41,322	—	—	281,738 Direct	+17.19%	Acquired	(price as of 2026-08-20)
Jan. 16, 2025	AMST	M	36,630	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 16, 2025	AMST	M	36,630	—	—	225,796 Direct	+19.36%	Acquired	(price as of 2026-08-20)
Jan. 7, 2025	AMST	P	83,333	$3.00	$249,999	189,166 Direct	+78.74%	Acquired	-68.7% (price as of 2026-08-20)
Dec. 31, 2024	AMST	A	2,526	—	—	41,662 Direct	+6.45%	Acquired	(price as of 2026-08-20)
Sept. 30, 2024	AMST	A	4,898	—	—	39,136 Direct	+14.31%	Acquired	(price as of 2026-08-20)
June 28, 2024	AMST	A	4,000	—	—	34,238 Direct	+13.23%	Acquired	(price as of 2026-08-20)
March 28, 2024	AMST	A	5,381	—	—	30,238 Direct	+21.65%	Acquired	(price as of 2026-08-20)
Jan. 16, 2024	AMST	A	36,630	—	—	36,630 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 29, 2023	AMST	A	5,333	—	—	24,857 Direct	+27.32%	Acquired	(price as of 2026-08-20)
Sept. 29, 2023	AMST	A	4,706	—	—	19,524 Direct	+31.76%	Acquired	(price as of 2026-08-20)
June 30, 2023	AMST	A	3,324	—	—	14,818 Direct	+28.92%	Acquired	(price as of 2026-08-20)
March 31, 2023	AMST	M	14,620	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 31, 2023	AMST	M	14,620	—	—	240,416 Direct	+6.47%	Acquired	(price as of 2026-08-20)
March 31, 2023	AMST	A	4,598	—	—	11,494 Direct	+66.68%	Acquired	(price as of 2026-08-20)
Dec. 30, 2022	AMST	A	34,286	—	—	82,751 Direct	+70.74%	Acquired	(price as of 2026-08-20)
Sept. 30, 2022	AMST	A	24,896	—	—	48,465 Direct	+105.63%	Acquired	(price as of 2026-08-20)
June 30, 2022	AMST	A	13,043	—	—	23,569 Direct	+123.91%	Acquired	(price as of 2026-08-20)
March 31, 2022	AMST	A	10,526	—	—	10,526 Direct	—	Acquired	(price as of 2026-08-20)
March 31, 2022	AMST	A	42,105	—	—	42,105 Direct	—	Acquired	(price as of 2026-08-20)
March 31, 2022	AMST	A	175,439	—	—	175,439 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 19, 2021	AMST	P	10,000	$1.30	$13,000	1,269,999 Direct	+0.79%	Acquired	-94.0% (price as of 2026-08-20)
Sept. 28, 2021	AMST	A	51,102	—	—	51,102 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 30, 2026	AMST	Restricted Stock Units	Common Stock (9,023)	—	—	9,023	Acquired
April 28, 2026	AMST	Series A-2 Warrants (right to buy)	Common Stock (243,902)	$1.44	Oct. 28, 2027	243,902	Acquired
April 28, 2026	AMST	Series A-1 Warrants (right to buy)	Common Stock (243,902)	$1.44	April 28, 2031	243,902	Acquired
March 31, 2026	AMST	Restricted Stock Units	Common Stock (6,522)	—	—	6,522	Acquired
March 7, 2026	AMST	Restricted Stock Units	Common Stock (41,322)	—	—	41,322	Disposed
Feb. 6, 2026	AMST	Restricted Stock Units	Common Stock (49,751)	—	—	49,751	Acquired
Dec. 31, 2025	AMST	Restricted Stock Units	Common Stock (6,349)	—	—	6,349	Acquired
Sept. 30, 2025	AMST	Restricted Stock Units	Common Stock (3,934)	—	—	3,934	Acquired
June 30, 2025	AMST	Restricted Stock Units	Common Stock (4,461)	—	—	4,461	Acquired
March 31, 2025	AMST	Restricted Stock Units	Common Stock (4,959)	—	—	4,959	Acquired
March 7, 2025	AMST	Restricted Stock Units	Common Stock (41,322)	—	—	41,322	Acquired
Jan. 16, 2025	AMST	Restricted Stock Units	Common Stock (36,630)	—	—	36,630	Disposed
Dec. 31, 2024	AMST	Restricted Stock Units	Common Stock (2,526)	—	—	2,526	Acquired
Sept. 30, 2024	AMST	Restricted Stock Units	Common Stock (4,898)	—	—	4,898	Acquired
June 28, 2024	AMST	Restricted Stock Units	Common Stock (4,000)	—	—	4,000	Acquired
March 28, 2024	AMST	Restricted Stock Units	Common Stock (5,381)	—	—	5,381	Acquired
Jan. 16, 2024	AMST	Restricted Stock Units	Common Stock (36,630)	—	—	36,630	Acquired
Dec. 29, 2023	AMST	Restricted Stock Units	Common Stock (5,333)	—	—	5,333	Acquired
Sept. 29, 2023	AMST	Restricted Stock Units	Common Stock (4,706)	—	—	4,706	Acquired
June 30, 2023	AMST	Restricted Stock Units	Common Stock (3,324)	—	—	3,324	Acquired
March 31, 2023	AMST	Restricted Stock Units	Common Stock (14,620)	—	—	14,620	Disposed
March 31, 2023	AMST	Restricted Stock Units	Common Stock (4,598)	—	—	4,598	Acquired
Dec. 30, 2022	AMST	Restricted Stock Units	Common Stock (34,286)	—	—	34,286	Acquired
Sept. 30, 2022	AMST	Restricted Stock Units	Common Stock (24,896)	—	—	24,896	Acquired
June 30, 2022	AMST	Restricted Stock Units	Common Stock (13,043)	—	—	13,043	Acquired
March 31, 2022	AMST	Restricted Stock Units	Common Stock (10,526)	—	—	10,526	Acquired
March 31, 2022	AMST	Restricted Stock Units	Common Stock (42,105)	—	—	42,105	Acquired
March 31, 2022	AMST	Restricted Stock Units	Common Stock (175,439)	—	—	175,439	Acquired
Sept. 28, 2021	AMST	Stock option (right to buy)	Common Stock (51,102)	$1.78	Sept. 27, 2031	51,102	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
Nov. 30, 2020	AMST	Common Stock	1,259,999	Direct