Is the AMS Form 4 transaction an open-market buy or a share grant?

The Form 4 reflects a grant of 100,000 Restricted Stock Units to Raymond C. Stachowiak at a price of zero per unit. It is a compensation-related equity award, not an open-market stock purchase or sale by the executive chairman.

American Shared Hospital Services (AMS) grants chair 100,000 RSUs

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Stachowiak Raymond C reported acquisition or exercise transactions in this Form 4 filing.

American Shared Hospital Services Executive Chairman Raymond C. Stachowiak received an award of 100,000 Restricted Stock Units, each convertible into one share of Common Stock upon vesting. The units vest in four equal installments of 25,000 on April 1, 2026, July 1, 2026, October 1, 2026, and January 1, 2027.

After this award, he holds 774,678 shares of Common Stock directly, and also reports indirect holdings of 158,500 shares through RCS Investments, Inc. and 760,559 shares through Stachowiak Equity Fund.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Stachowiak Raymond C

Role Executive Chairman

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, No Par Value	100,000	$0.00	--
holding	Common Stock, No Par Value	--	--	--
holding	Common Stock, No Par Value	--	--	--

Holdings After Transaction: Common Stock, No Par Value — 774,678 shares (Direct); Common Stock, No Par Value — 158,500 shares (Indirect, By RCS Investments, Inc.)

Footnotes (1)

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Key Figures

RSU award size: 100,000 units First vesting tranche: 25,000 units Second vesting tranche: 25,000 units +5 more

8 metrics

RSU award size 100,000 units Restricted Stock Units granted March 26, 2026

First vesting tranche 25,000 units Vest on April 1, 2026

Second vesting tranche 25,000 units Vest on July 1, 2026

Third vesting tranche 25,000 units Vest on October 1, 2026

Fourth vesting tranche 25,000 units Vest on January 1, 2027

Direct holdings after award 774,678 shares Common Stock directly owned after transaction

Indirect holdings via RCS Investments 158,500 shares Indirect Common Stock ownership

Indirect holdings via Equity Fund 760,559 shares Indirect Common Stock ownership

Key Terms

Restricted Stock Units, Common Stock, No Par Value, Executive Chairman, ten percent owner

4 terms

Restricted Stock Units financial

"This represents an award of 100,000 Restricted Stock Units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Common Stock, No Par Value financial

"security_title": "Common Stock, No Par Value""

Executive Chairman financial

""officer_title": "Executive Chairman""

An executive chairman is the board leader who also takes an active role in running the company, combining oversight of the board with hands-on involvement in strategy and major decisions. For investors, this matters because it concentrates influence in one person—like a team captain who both sets the game plan and plays on the field—so their judgment can speed decisions but also increases governance and succession risk that can affect stock value.

ten percent owner financial

""is_ten_percent_owner": 1"

Form 4 Insider Transactions: What Each Field Means →

04/15/2026 - 07:15 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Stachowiak Raymond C

(Last)

(First)

(Middle)

601 MONTGOMERY STREET

(Street)

SAN FRANCISCO

CALIFORNIA

94111

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AMERICAN SHARED HOSPITAL SERVICES [ AMS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Chairman

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, No Par Value								158,500	I	By RCS Investments, Inc.
Common Stock, No Par Value								760,559	I	By Stachowiak Equity Fund
Common Stock, No Par Value	03/26/2026		A		100,000⁽¹⁾	A	$0	774,678	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This represents an award of 100,000 Restricted Stock Units. Each unit will entitle the reporting person to one share of the issuer's Common Stock upon vesting, 25,000 vest on each April 1, 2026, July 1, 2026, October 1, 2026, and January 1, 2027.

	/s/ Craig Tagawa on behalf of Raymond C. Stachowiak	04/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did AMS Executive Chairman Raymond Stachowiak report?

Raymond C. Stachowiak reported receiving an award of 100,000 Restricted Stock Units in American Shared Hospital Services. Each unit converts into one share of Common Stock upon vesting, reflecting a compensation-related equity grant rather than an open-market stock purchase or sale.

How do the 100,000 AMS Restricted Stock Units vest for Raymond Stachowiak?

The 100,000 Restricted Stock Units vest in four equal tranches of 25,000 units. Vesting dates are April 1, 2026, July 1, 2026, October 1, 2026, and January 1, 2027, after which each vested unit entitles him to one AMS Common Share.

How many AMS shares does Raymond Stachowiak hold directly after this Form 4?

Following the Restricted Stock Unit award, Raymond C. Stachowiak directly holds 774,678 shares of American Shared Hospital Services Common Stock. This figure reflects his direct ownership position reported in the filing after the compensation-related grant on March 26, 2026.

What indirect AMS shareholdings are reported for Raymond Stachowiak?

The filing reports 158,500 AMS shares held indirectly through RCS Investments, Inc. and 760,559 AMS shares held indirectly through Stachowiak Equity Fund. These positions are disclosed as indirect ownership interests in addition to his direct Common Stock holdings.