Company · CIK 0000744825 · SIC 8071 — Services-Medical Laboratories · NYSE

AMERICAN SHARED HOSPITAL SERVICES · AMS

Insider activity reported against this company. All insider holders · Files at: AMS. On EDGAR ↗

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Open-market activity at this companybuys $1.3M · 3sales $151k · 6net $1.2M

Reported at this company — common stock

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Jun 22, 2026 PForm 4 →	Jun 24, 4:09 pm EDT	Raymond C StachowiakExecutive Chairman, Director, 10% Owner	586,468	$2.28	$1,337,147	586,468	—
Jan 2, 2019 AForm 4 →	Jan 4, 5:24 pm EST	Sandra AJ LawrenceDirector	8,164	—	—	17,008	—	plan?
Jan 2, 2019 AForm 4 →	Jan 4, 5:22 pm EST	Daniel G Kelly Jr.Director	8,164	—	—	28,299	—	plan?
Jan 2, 2019 AForm 4 →	Jan 4, 5:20 pm EST	David LarsonDirector	8,164	—	—	66,072	—	plan?
Jan 2, 2019 AForm 4 →	Jan 4, 5:19 pm EST	Raymond C StachowiakDirector, 10% Owner	8,164	—	—	69,717	—	plan?
Jun 14, 2018 AForm 4/A →	Oct 9, 11:55 am EDT	Saim Mert OzyurekDirector	500	—	—	61,630	—	plan?
Jun 14, 2018 AForm 4 →	Jul 5, 8:18 pm EDT	Stanley S Trotman Jr.Director	500	—	—	240,406	—	plan? late
Jun 14, 2018 AForm 4 →	Jun 18, 8:19 pm EDT	Sandra AJ LawrenceDirector	500	—	—	8,844	—	plan?
Jun 14, 2018 AForm 4 →	Jun 18, 8:17 pm EDT	David LarsonDirector	500	—	—	57,908	—	plan?
Jun 14, 2018 AForm 4 →	Jun 18, 8:09 pm EDT	Raymond C StachowiakDirector, 10% Owner	500	—	—	61,553	—	plan?
Jun 14, 2018 AForm 4 →	Jun 18, 6:58 pm EDT	Saim Mert OzyurekDirector	500	—	—	240,406	—	plan? amended
Jun 14, 2018 AForm 4 →	Jun 18, 6:50 pm EDT	John F RuffleDirector	500	—	—	544,849	—	plan?
Jun 14, 2018 AForm 4 →	Jun 18, 6:42 pm EDT	Daniel G Kelly Jr.Director	500	—	—	20,135	—	plan?
Jun 14, 2018 SForm 4 →	Jun 18, 4:49 pm EDT	Craig Kenji TagawaCOO/CFO	6,905	$2.75	$19,017	64,391	−9.68%	plan?
Jun 5, 2018 SForm 4 →	Jun 7, 4:01 pm EDT	Craig Kenji TagawaCOO/CFO	8,000	$2.72	$21,733	68,296	−10.5%	plan?
Jan 2, 2018 AForm 4 →	Jan 4, 5:33 pm EST	David LarsonDirector	7,844	—	—	66,508	—	plan?
Jan 2, 2018 AForm 4 →	Jan 4, 5:30 pm EST	Sandra AJ LawrenceDirector	7,844	—	—	8,344	—	plan?
Jan 2, 2018 AForm 4 →	Jan 4, 5:27 pm EST	Daniel G Kelly Jr.Director	7,844	—	—	19,635	—	plan?
Jan 2, 2018 AForm 4 →	Jan 4, 5:24 pm EST	Raymond C StachowiakDirector, 10% Owner	7,844	—	—	61,553	—	plan?
Jun 27, 2017 AForm 4 →	Jun 29, 6:28 pm EDT	Raymond C StachowiakDirector, 10% Owner	500	—	—	53,709	—	plan?
Jun 27, 2017 AForm 4 →	Jun 29, 6:01 pm EDT	David LarsonDirector	500	—	—	58,664	—	plan?
Jun 27, 2017 AForm 4 →	Jun 29, 5:40 pm EDT	Daniel G Kelly Jr.Director	500	—	—	11,791	—	plan?
Jun 27, 2017 AForm 4 →	Jun 29, 5:15 pm EDT	Stanley S Trotman Jr.Director	500	—	—	239,906	—	plan?
Jun 27, 2017 AForm 4 →	Jun 29, 4:58 pm EDT	John F RuffleDirector, 10% Owner	500	—	—	544,349	—	plan?
Jun 27, 2017 AForm 4 →	Jun 29, 4:37 pm EDT	Saim Mert OzyurekDirector	500	—	—	61,130	—	plan?
May 18, 2017 SForm 4 →	May 22, 2:54 pm EDT	Craig Kenji TagawaCOO/CFO	7,000	$3.85	$26,955	76,296	−8.40%	plan?
Mar 31, 2017 SForm 4 →	Apr 3, 8:08 pm EDT	Craig Kenji TagawaCOO/CFO	5,000	$4.32	$21,604	82,496	−5.71%	plan?
Mar 31, 2017 FMForm 4 →	Apr 3, 7:02 pm EDT	David LarsonDirector	15,093	$2.92	$44,002	58,164	—	plan?
Mar 31, 2017 FMForm 4 →	Apr 3, 6:36 pm EDT	Saim Mert OzyurekDirector	60,370	$2.92	$175,998	60,630	—	plan?
Mar 29, 2017 SForm 4 →	Mar 31, 5:11 pm EDT	Ernest A BatesChairman and CEO, Director, 10% Owner	10,000	$4.23	$42,282	645,147	−1.53%	plan?
Mar 29, 2017 MForm 4 →	Mar 31, 3:45 pm EDT	John F RuffleDirector, 10% Owner	52,000	$2.22	$115,620	543,849	—	plan?
Mar 27, 2017 GForm 4 →	Mar 28, 5:56 pm EDT	Stanley S Trotman Jr.Director	87,705	$4.30	$377,132	239,406	—	plan?
Jan 4, 2017 AForm 4 →	Jan 6, 5:57 pm EST	Ernest Robert BatesVice President	36,765	—	—	53,594	—	plan?
Jan 4, 2017 AForm 4 →	Jan 6, 5:55 pm EST	Ernest A BatesChairman and CEO, Director, 10% Owner	66,177	—	—	655,147	—	plan?
Jan 4, 2017 AForm 4 →	Jan 6, 5:42 pm EST	Craig Kenji TagawaCOO/CFO	58,824	—	—	87,496	—	plan?
Jan 3, 2017 AForm 4 →	Jan 5, 7:57 pm EST	Daniel G Kelly Jr.Director	5,883	—	—	11,291	—	plan?
Jan 3, 2017 AForm 4 →	Jan 5, 7:04 pm EST	Raymond C StachowiakDirector, 10% Owner	5,883	—	—	53,209	—	plan?
Jan 3, 2017 AForm 4 →	Jan 5, 1:06 pm EST	David LarsonDirector	5,883	—	—	53,257	—	plan?
Nov 15, 2016 GMForm 4 →	Nov 17, 7:21 pm EST	Raymond C StachowiakDirector, 10% Owner	500,000	$2.20	$220,000	600,000	—	plan?
Jul 1, 2016 AForm 4 →	Jul 6, 12:01 pm EDT	Daniel G Kelly Jr.Director	4,808	—	—	5,408	—	plan?
Jun 21, 2016 AForm 4 →	Jun 23, 4:38 pm EDT	Daniel G Kelly Jr.Director	500	—	—	600	—	plan?
Jun 21, 2016 AForm 4 →	Jun 23, 3:56 pm EDT	Stanley S Trotman Jr.Director	500	—	—	327,111	—	plan?
Jun 21, 2016 AForm 4 →	Jun 23, 3:45 pm EDT	Raymond C StachowiakDirector, 10% Owner	500	—	—	48,826	—	plan?
Jun 21, 2016 AForm 4 →	Jun 23, 3:32 pm EDT	Saim Mert OzyurekDirector	500	—	—	41,000	—	plan?
Jun 21, 2016 AForm 4 →	Jun 23, 3:18 pm EDT	John F RuffleDirector, 10% Owner	500	—	—	491,849	—	plan?
Jun 21, 2016 AForm 4 →	Jun 23, 2:58 pm EDT	David LarsonDirector	500	—	—	47,374	—	plan?
Jun 8, 2016 PForm 4 →	Jun 10, 4:03 pm EDT	Ernest A BatesChairman and CEO, Director, 10% Owner	500	$2.08	$1,041	588,970	+0.08%	plan?
Jun 6, 2016 PForm 4 →	Jun 8, 4:28 pm EDT	Ernest A BatesChairman and CEO, Director, 10% Owner	1,000	$2.04	$2,038	588,470	+0.17%	plan?
Jan 4, 2016 AForm 4 →	Jan 6, 2:16 pm EST	David LarsonDirector	10,582	—	—	46,874	—	plan?
Jan 4, 2016 AForm 4 →	Jan 6, 2:01 pm EST	John F RuffleDirector, 10% Owner	10,582	—	—	491,349	—	plan?
Jan 4, 2016 AForm 4 →	Jan 6, 1:42 pm EST	Raymond C StachowiakDirector, 10% Owner	10,582	—	—	48,326	—	plan?
Aug 27, 2015 SForm 4 →	Apr 25, 2017, 4:18 pm EDT	David LarsonDirector	9,100	$2.08	$18,934	49,064	−15.6%	plan? late
Jul 7, 2015 GForm 4 →	Jul 14, 7:13 pm EDT	Raymond C StachowiakDirector, 10% Owner	800,000	—	—	400,000	—	plan? late
Jun 16, 2015 AForm 4 →	Jun 17, 3:20 pm EDT	Stanley S Trotman Jr.Director	500	—	—	326,611	—	plan?
Jun 16, 2015 AForm 4 →	Jun 17, 2:52 pm EDT	Raymond C StachowiakDirector, 10% Owner	500	—	—	37,744	—	plan?
Jun 16, 2015 AForm 4 →	Jun 17, 1:37 pm EDT	Saim Mert OzyurekDirector	500	—	—	40,500	—	plan?
Jun 16, 2015 AForm 4 →	Jun 17, 1:13 pm EDT	John F RuffleDirector	500	—	—	480,767	—	plan?
Jun 16, 2015 AForm 4 →	Jun 17, 12:57 pm EDT	David LarsonDirector	500	—	—	36,292	—	plan?
May 4, 2015 FMForm 4 →	May 6, 3:40 pm EDT	Stanley S Trotman Jr.Director	3,723	$2.47	$9,200	326,111	—	plan?
Jan 2, 2015 AForm 4 →	Apr 21, 2:50 pm EDT	Raymond C StachowiakDirector, 10% Owner	6,897	—	—	37,244	—	plan? late

Reported at this company — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Jul 22, 2026 AForm 4 →	Jul 24, 4:06 pm EDT	Raymond C StachowiakExecutive Chairman, Director, 10% Owner	220,000	—	—	220,000	—
Jun 14, 2018 AForm 4 →	Jul 5, 8:18 pm EDT	Stanley S Trotman Jr.Director	2,000	—	—	2,000	—	late
Jun 14, 2018 AForm 4 →	Jun 18, 8:19 pm EDT	Sandra AJ LawrenceDirector	2,000	—	—	2,000	—
Jun 14, 2018 AForm 4 →	Jun 18, 8:17 pm EDT	David LarsonDirector	2,000	—	—	2,000	—
Jun 14, 2018 AForm 4 →	Jun 18, 8:09 pm EDT	Raymond C StachowiakDirector, 10% Owner	2,000	—	—	2,000	—
Jun 14, 2018 AForm 4 →	Jun 18, 6:58 pm EDT	Saim Mert OzyurekDirector	2,000	—	—	2,000	—	amended
Jun 14, 2018 AForm 4 →	Jun 18, 6:50 pm EDT	John F RuffleDirector	2,000	—	—	2,000	—
Jun 14, 2018 AForm 4 →	Jun 18, 6:42 pm EDT	Daniel G Kelly Jr.Director	2,000	—	—	2,000	—
Jun 27, 2017 AForm 4 →	Jun 29, 6:28 pm EDT	Raymond C StachowiakDirector, 10% Owner	2,000	—	—	2,000	—
Jun 27, 2017 AForm 4 →	Jun 29, 6:01 pm EDT	David LarsonDirector	2,000	—	—	2,000	—
Jun 27, 2017 AForm 4 →	Jun 29, 5:40 pm EDT	Daniel G Kelly Jr.Director	2,000	—	—	2,000	—
Jun 27, 2017 AForm 4 →	Jun 29, 5:15 pm EDT	Stanley S Trotman Jr.Director	2,000	—	—	2,000	—
Jun 27, 2017 AForm 4 →	Jun 29, 4:58 pm EDT	John F RuffleDirector, 10% Owner	2,000	—	—	2,000	—
Jun 27, 2017 AForm 4 →	Jun 29, 4:37 pm EDT	Saim Mert OzyurekDirector	2,000	—	—	2,000	—
Mar 31, 2017 MForm 4 →	Apr 3, 7:02 pm EDT	David LarsonDirector	10,000	—	—	0	—
Mar 31, 2017 MForm 4 →	Apr 3, 6:36 pm EDT	Saim Mert OzyurekDirector	40,000	—	—	0	—
Mar 29, 2017 MForm 4 →	Mar 31, 3:45 pm EDT	John F RuffleDirector, 10% Owner	52,000	—	—	19,500	—
Nov 15, 2016 MForm 4 →	Nov 17, 7:21 pm EST	Raymond C StachowiakDirector, 10% Owner	100,000	—	—	0	—
Jun 21, 2016 AForm 4 →	Jun 23, 4:38 pm EDT	Daniel G Kelly Jr.Director	5,000	—	—	5,000	—
Jun 21, 2016 AForm 4 →	Jun 23, 3:56 pm EDT	Stanley S Trotman Jr.Director	2,000	—	—	2,000	—
Jun 21, 2016 AForm 4 →	Jun 23, 3:45 pm EDT	Raymond C StachowiakDirector, 10% Owner	2,000	—	—	2,000	—
Jun 21, 2016 AForm 4 →	Jun 23, 3:32 pm EDT	Saim Mert OzyurekDirector	2,000	—	—	2,000	—
Jun 21, 2016 AForm 4 →	Jun 23, 3:18 pm EDT	John F RuffleDirector, 10% Owner	2,000	—	—	2,000	—
Jun 21, 2016 AForm 4 →	Jun 23, 2:58 pm EDT	David LarsonDirector	2,000	—	—	2,000	—
Jun 16, 2015 AForm 4 →	Jun 17, 3:20 pm EDT	Stanley S Trotman Jr.Director	2,000	—	—	2,000	—
Jun 16, 2015 AForm 4 →	Jun 17, 2:52 pm EDT	Raymond C StachowiakDirector, 10% Owner	2,000	—	—	2,000	—
Jun 16, 2015 AForm 4 →	Jun 17, 1:37 pm EDT	Saim Mert OzyurekDirector	2,000	—	—	2,000	—
Jun 16, 2015 AForm 4 →	Jun 17, 1:13 pm EDT	John F RuffleDirector	2,000	—	—	2,000	—
Jun 16, 2015 AForm 4 →	Jun 17, 12:57 pm EDT	David LarsonDirector	2,000	—	—	2,000	—
May 4, 2015 MForm 4 →	May 6, 3:40 pm EDT	Stanley S Trotman Jr.Director	2,000	—	—	23,500	—
Jan 2, 2015 AForm 4 →	Apr 17, 3:48 pm EDT	Stanley S Trotman Jr.Director	6,897	—	—	6,897	—	late
Jan 2, 2015 AForm 4 →	Apr 17, 3:37 pm EDT	John F RuffleDirector	6,897	—	—	6,897	—	late
Jan 2, 2015 AForm 4 →	Apr 17, 3:27 pm EDT	David LarsonDirector	6,897	—	—	6,897	—	late
Dec 30, 2014 AForm 4 →	Jan 29, 2015, 6:10 pm EST	AMERICAN SHARED HOSPITAL SERVICESVice President	112,500	—	—	112,500	—	late
Dec 30, 2014 AForm 4 →	Jan 29, 2015, 3:39 pm EST	Raymond C StachowiakDirector, 10% Owner	7,500	—	—	7,500	—	late
Dec 30, 2014 AForm 4 →	Jan 27, 2015, 5:40 pm EST	Stanley S Trotman Jr.Director	7,500	—	—	25,500	—	late
Dec 30, 2014 AForm 4 →	Jan 27, 2015, 5:28 pm EST	Saim Mert OzyurekDirector	7,500	—	—	18,500	—	late
Dec 30, 2014 AForm 4 →	Jan 27, 2015, 5:17 pm EST	John F RuffleDirector	7,500	—	—	25,500	—	late
Dec 30, 2014 AForm 4 →	Jan 27, 2015, 5:03 pm EST	Ernest A BatesChairman and CEO, Director, 10% Owner	150,000	—	—	150,000	—	late
Dec 30, 2014 AForm 4 →	Jan 27, 2015, 4:51 pm EST	David LarsonDirector	7,500	—	—	18,500	—	late
Dec 30, 2014 AForm 4 →	Jan 27, 2015, 3:56 pm EST	Craig Kenji TagawaCOO/CFO	150,000	—	—	164,500	—	late

Filed by this entity as an insider elsewhere — common stock

No reported common-stock activity in this period.

Filed by this entity as an insider elsewhere — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Company	Shares	Avg price	Total	Owned after	Δ stake	Flags
Dec 30, 2014 AForm 4 →	Jan 29, 2015, 6:10 pm EST	AMERICAN SHARED HOSPITAL SERVICESAMS	112,500	—	—	112,500	—	late