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Larson David

Disclosed activity across 1 company

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137820
SEC CIK
0001610616

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
AMERICAN SHARED HOSPITAL SERVICESAMS · Entity 8010DirectorJune 25, 2021June 29, 2021

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

AMERICAN SHARED HOSPITAL SERVICES

Report date June 25, 2021 · Filed June 29, 2021

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, No Par ValueSEC Table I · non-derivativeDirect89,816 Reported balance After 2021-06-25 transaction · row 1
1 source row

Row 1 · 2021-06-25 · Grant · Acquired 1,000 · Balance 89,816

F1: THIS REPRESENTS AN AWARD OF RESTRICTED STOCK UNITS. EACH UNIT WILL ENTITLE THE REPORTING PERSON TO ONE SHARE OF THE ISSUER'S COMMON STOCK UPON VESTING. THE UNITS WILL VEST IN FULL UPON THE EARLIER OF (I) THE REPORTING PERSON'S COMPLETION OF ONE YEAR OF SERVICE MEASURED FROM JUNE 25, 2021, OR SUCH INDIVIDUAL'S CONTINUATION IN BOARD SERVICE THROUGH THE DAY IMMEDIATELY PRECEDING THE 2022 ANNUAL SHAREHOLDERS MEETING (THE "VESTING DATE").

Filing footnotes · ownership attribution and instrument terms

F1: THIS REPRESENTS AN AWARD OF RESTRICTED STOCK UNITS. EACH UNIT WILL ENTITLE THE REPORTING PERSON TO ONE SHARE OF THE ISSUER'S COMMON STOCK UPON VESTING. THE UNITS WILL VEST IN FULL UPON THE EARLIER OF (I) THE REPORTING PERSON'S COMPLETION OF ONE YEAR OF SERVICE MEASURED FROM JUNE 25, 2021, OR SUCH INDIVIDUAL'S CONTINUATION IN BOARD SERVICE THROUGH THE DAY IMMEDIATELY PRECEDING THE 2022 ANNUAL SHAREHOLDERS MEETING (THE "VESTING DATE").

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
June 25, 2021 Filed Jun 29, 2021 21:21 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 1,000 $0.00 $0.00
Disclosure

SEC source: 0001437749-21-015957 · rdgdoc.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,816

F1 · shares: THIS REPRESENTS AN AWARD OF RESTRICTED STOCK UNITS. EACH UNIT WILL ENTITLE THE REPORTING PERSON TO ONE SHARE OF THE ISSUER'S COMMON STOCK UPON VESTING. THE UNITS WILL VEST IN FULL UPON THE EARLIER OF (I) THE REPORTING PERSON'S COMPLETION OF ONE YEAR OF SERVICE MEASURED FROM JUNE 25, 2021, OR SUCH INDIVIDUAL'S CONTINUATION IN BOARD SERVICE THROUGH THE DAY IMMEDIATELY PRECEDING THE 2022 ANNUAL SHAREHOLDERS MEETING (THE "VESTING DATE").

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionSTOCK OPTION (RIGHT TO BUY) · Derivative 2,000 $2.43 Strike: $2.43 $4,860.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · derivative · entry 19

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 2,000 shares

Expires 2021-06-09

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to purchase) · Derivative 7,500 $2.82 Strike: $2.82 $21,150.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · derivative · entry 18

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 7,500 shares

Expires 2021-12-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.70 Strike: $2.70 $5,400.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · derivative · entry 17

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 2,000 shares

Expires 2022-06-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.25 Strike: $2.25 $4,500.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · derivative · entry 16

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 2,000 shares

Expires 2023-06-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.68 Strike: $2.68 $5,360.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · derivative · entry 15

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 2,000 shares

Expires 2025-06-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $3.03 Strike: $3.03 $6,060.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · derivative · entry 14

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 2,000 shares

Expires 2026-06-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 7,500 $2.82 $21,150.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 13

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,108

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon stock 1,553 $3.13 $4,860.89
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 12

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,816

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 2,000 $2.43 $4,860.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 11

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,369

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon stock 6,757 $3.13 $21,149.41
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 10

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,369

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 7,500 $2.82 $21,150.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 9

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,126

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon stock 1,725 $3.13 $5,399.25
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 8

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,626

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 2,000 $2.70 $5,400.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 7

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,351

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon stock 1,438 $3.13 $4,500.94
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 6

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,351

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 2,000 $2.25 $4,500.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 5

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,789

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon stock 1,712 $3.13 $5,358.56
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 4

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,789

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 2,000 $2.68 $5,360.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 3

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,501

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon stock 1,936 $3.13 $6,059.68
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 2

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,501

Read SEC document
June 04, 2021 Filed Jun 8, 2021 18:28 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon stock 2,000 $3.03 $6,060.00
Disclosure

SEC source: 0000744825-21-000062 · wf-form4_162317690590696.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,437

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.43 Strike: $2.43 $4,860.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · derivative · entry 18

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,000 shares

Expires 2021-06-09

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 7,500 $2.82 Strike: $2.82 $21,150.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · derivative · entry 17

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,000 shares

Expires 2021-06-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.70 Strike: $2.70 $5,400.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · derivative · entry 16

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,000 shares

Expires 2022-06-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.25 Strike: $2.25 $4,500.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · derivative · entry 15

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,000 shares

Expires 2023-06-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $2.68 Strike: $2.68 $5,360.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · derivative · entry 14

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,000 shares

Expires 2025-06-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionStock Options (right to buy) · Derivative 2,000 $3.03 Strike: $3.03 $6,060.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · derivative · entry 13

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,000 shares

Expires 2026-06-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon Stock 1,535 $3.03 $4,651.05
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 12

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,816

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon Stock 2,000 $3.03 $6,060.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 11

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,369

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon Stock 6,757 $3.03 $20,473.71
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 10

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,369

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon Stock 7,500 $3.03 $22,725.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 9

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,126

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon Stock 1,725 $3.03 $5,226.75
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 8

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,626

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon Stock 2,000 $3.03 $6,060.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 7

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,351

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon Stock 1,438 $3.03 $4,357.14
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 6

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,351

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon Stock 2,000 $3.03 $6,060.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 5

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,789

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon Stock 1,712 $3.03 $5,187.36
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 4

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,789

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon Stock 2,000 $3.03 $6,060.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 3

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,501

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Tax withholdingCommon Stock 1,936 $3.03 $5,866.08
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 2

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,501

Read SEC document
June 04, 2021 Filed Jun 29, 2021 21:20 UTC Amendment AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 Exercise / conversionCommon Stock 2,000 $3.03 $6,060.00
Disclosure

SEC source: 0001437749-21-015954 · rdgdoc.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,437

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: On June 7, 2021, a Form 4 was filed which inadvertently included a duplicate entry showing the exercise of an option on June 4, 2021 for 7,500 shares of the Issuer's common stock at an exercise price of $2.82. This amendment is being filed to remove the duplicate entry.

Read SEC document
January 04, 2021 Filed Jan 6, 2021 18:11 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 11,521 $2.17 $25,000.57
Disclosure

SEC source: 0000744825-21-000002 · wf-form4_160995665365160.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,437

F1 · security: These Restricted Stock Units vest over a series of four (4) successive quarters from issuance but settlement has been deferred until after termination of the reporting person's service.

Read SEC document
June 26, 2020 Filed Jun 30, 2020 18:06 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCOMMON SHARE · Derivative 2,000 $1.88 Strike: $1.88 $3,760.00
Disclosure

SEC source: 0000744825-20-000070 · wf-form4_159354035417023.xml · derivative · entry 2

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,000

Underlying: COMMON SHARE · 0 shares

Expires 2027-06-25

F3 · shares: The reported stock option will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 26, 2020, or (II) such individual's continuation in Board service through the day immediately preceding the 2021 Annual Shareholders Meeting (the "Vesting Date").

Read SEC document
June 26, 2020 Filed Jun 30, 2020 18:06 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 500 $1.88 $940.00
Disclosure

SEC source: 0000744825-20-000070 · wf-form4_159354035417023.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,916

F1 · shares: This represents an award of restricted stock units. Each unit will entitle the reporting person to one share of the issuer's common stock upon vesting. The units will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 26, 2020, or (II) such individual's continuation in Board service through the day immediately preceding the 2021 Annual Shareholders Meeting (the "Vesting Date").

F2 · balance_after: Includes 500 shares subject to the reported restricted stock unit award which will vest in full on the Vesting Date.

Read SEC document
January 02, 2020 Filed Mar 12, 2020 21:14 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCOMMON SHARE 7,844 $0.00 $0.00
Disclosure

SEC source: 0001628280-20-003488 · wf-form4_158404763823799.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,416

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June 21, 2019 Filed Aug 2, 2019 22:54 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantStock Options (right to buy) · Derivative 2,000 $0.00 Strike: $3.03 $0.00
Disclosure

SEC source: 0001610616-19-000004 · wf-form4_156478646209582.xml · derivative · entry 2

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,000

Underlying: Common stock · 2,000 shares

Expires 2026-06-20

F3 · derivative.exercise_date: The reported stock option will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 21, 2019, or (II) such individual's continuation in Board service through the day immediately preceding the 2020 Annual Shareholders Meeting (the "Vesting Date").

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June 21, 2019 Filed Aug 2, 2019 22:54 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 500 $0.00 $0.00
Disclosure

SEC source: 0001610616-19-000004 · wf-form4_156478646209582.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,572

F1 · shares: This represents an award of restricted stock units. Each unit will entitle the reporting person to one share of the issuer's common stock upon vesting. The units will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 21, 2019, or (II) such individual's continuation in Board service through the day immediately preceding the 2020 Annual Shareholders Meeting (the "Vesting Date").

F2 · balance_after: Includes 500 shares subject to the reported restricted stock unit award which will vest in full on the Vesting Date.

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January 02, 2019 Filed Jan 4, 2019 22:20 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 8,164 $0.00 $0.00
Disclosure

SEC source: 0001144204-19-000700 · tv510436_4.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,072

F1 · shares: These restricted stock units vest over a series of four (4) successive quarters from issuance but settlement has been deferred until after termination of the reporting person's service.

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June 14, 2018 Filed Jun 19, 2018 00:17 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantStock Options (right to buy) · Derivative 2,000 $0.00 Strike: $2.68 $0.00
Disclosure

SEC source: 0001144204-18-034679 · tv496635_4.xml · derivative · entry 2

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,000

Underlying: Common Stock · 2,000 shares

Expires 2025-06-13

F3 · derivative.exercise_date: The reported stock option will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 14, 2018, or (II) such individual's continuation in Board service through the day immediately preceding the 2019 Annual Shareholders Meeting (the "Vesting Date").

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June 14, 2018 Filed Jun 19, 2018 00:17 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 500 $0.00 $0.00
Disclosure

SEC source: 0001144204-18-034679 · tv496635_4.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,908

F1 · shares: This represents an award of restricted stock units. Each unit will entitle the reporting person to one share of the issuer's common stock upon vesting. The units will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 14, 2018, or (II) such individual's continuation in Board service through the day immediately preceding the 2019 Annual Shareholders Meeting (the "Vesting Date").

F2 · balance_after: Includes 500 shares subject to the reported restricted stock unit award which will vest in full on the Vesting Date.

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January 02, 2018 Filed Jan 4, 2018 22:33 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCOMMON STOCK 7,844 $0.00 $0.00
Disclosure

SEC source: 0000950103-18-000156 · dp84870_4-larson.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,508

F1 · shares: These restricted stock units vest over a series of four (4) successive quarters from issuance but settlement has been deferred until after termination of the reporting person's service.

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June 27, 2017 Filed Jun 29, 2017 22:01 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantStock Options (right to buy) · Derivative 2,000 $0.00 Strike: $3.90 $0.00
Disclosure

SEC source: 0001610616-17-000004 · primary_doc.xml · derivative · entry 2

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,000

Underlying: Common Stock · 2,000 shares

Expires 2024-06-26

F3 · derivative.exercise_date: The reported stock option will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 27, 2017, or (II) such individual's continuation in Board service through the day immediately preceding the 2018 Annual Shareholders Meeting (the "Vesting Date").

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June 27, 2017 Filed Jun 29, 2017 22:01 UTC AMERICAN SHARED HOSPITAL SERVICES AMS · Entity 8010 GrantCommon Stock, No Par Value 500 $0.00 $0.00
Disclosure

SEC source: 0001610616-17-000004 · primary_doc.xml · nonDerivative · entry 1

Larson David · CIK 0001610616 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,664

F1 · shares: This represents an award of restricted stock units. Each unit will entitle the reporting person to one share of the issuer's common stock upon vesting. The units will vest in full upon the earlier of (I) the reporting person's completion of one year of service measured from June 27, 2017, or (II) such individual's continuation in Board service through the day immediately preceding the 2018 Annual Shareholders Meeting (the "Vesting Date").

F2 · balance_after: Includes 500 shares subject to the reported restricted stock unit award which will vest in full on the Vesting Date.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.