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Stahlin Paul

Disclosed activity across 3 companies

Tapewire entity
29110
SEC CIK
0001764337

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Columbia Financial, Inc./MD/CLBK · Entity 2776DirectorJuly 20, 2026July 22, 2026
MIAMI INTERNATIONAL HOLDINGS, INC.MIAX · Entity 4026DirectorJune 15, 2026June 17, 2026

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.

Columbia Financial, Inc./MD/

Report date July 20, 2026 · Filed July 22, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy IRA57,000 Reported balance Holding disclosure · report date 2026-07-20 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 57,000

MIAMI INTERNATIONAL HOLDINGS, INC.

Report date June 15, 2026 · Filed June 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect42,143 Ending reported balance After 2026-06-16 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-06-15 · Grant · Acquired 2,267 · Balance 37,173

F1: The amount represents restricted stock units ("RSUs") that fully vested on the date of grant. Each RSU represents a right to receive one share of the Issuer's common stock.

Row 2 · 2026-06-16 · Grant · Acquired 4,970 · Balance 42,143

F2: The amount represents RSUs that vest on the last business day immediately preceding the 2027 annual meeting of stockholders, subject to the reporting person's continued service to the Issuer through the vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: The amount represents restricted stock units ("RSUs") that fully vested on the date of grant. Each RSU represents a right to receive one share of the Issuer's common stock.

F2: The amount represents RSUs that vest on the last business day immediately preceding the 2027 annual meeting of stockholders, subject to the reporting person's continued service to the Issuer through the vesting date.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Northfield Bancorp, Inc.

Report date July 20, 2026 · Filed July 21, 2026

Section 16 reporting ended · disclosed 2026-07-21. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2026-07-20 transaction · row 1
1 source row

Row 1 · 2026-07-20 · Disposition to issuer · Disposed 54,354 · Balance 0

F1: Pursuant to the Agreement and Plan of Merger dated as of January 31, 2026, by and among Columbia Financial, Inc., a Delaware corporation, Columbia Financial, Inc., a Maryland corporation (Newco), Columbia Bank MHC and Northfield Bancorp, Inc. (Merger Agreement), at the effective time of the merger between Northfield Bancorp, Inc, and Newco, each issued and outstanding share of Northfield Bancorp, Inc. common stock was converted into the right to receive, at the election of the holder, either (i) 1.425 shares of Newco common stock or (ii) $14.25 in cash.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-07-20 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-07-20 · Disposition to issuer · Disposed 4,383 · Balance 0

F2: Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.

Filing footnotes · ownership attribution and instrument terms

F1: Pursuant to the Agreement and Plan of Merger dated as of January 31, 2026, by and among Columbia Financial, Inc., a Delaware corporation, Columbia Financial, Inc., a Maryland corporation (Newco), Columbia Bank MHC and Northfield Bancorp, Inc. (Merger Agreement), at the effective time of the merger between Northfield Bancorp, Inc, and Newco, each issued and outstanding share of Northfield Bancorp, Inc. common stock was converted into the right to receive, at the election of the holder, either (i) 1.425 shares of Newco common stock or (ii) $14.25 in cash.

F2: Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.

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
July 20, 2026 Filed Jul 21, 2026 01:35 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 Disposition to issuerRestricted Stock Units · Derivative 4,383 Not disclosed Not disclosed
Disclosure

SEC source: 0001493225-26-000082 · wk-form4_1784597751.xml · derivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,383 shares

Expires not disclosed

F2 · derivative.exercise_price: Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.

F2 · price: Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.

F2 · derivative.exercise_date: Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.

F2 · derivative.expiration_date: Pursuant to the Merger Agreement, each restricted stock unit was converted into the right to receive 1.425 units that will be settled in cash based on the closing price of Newco common stock on the day of vesting.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:35 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 Disposition to issuerCommon Stock 54,354 Not disclosed Not disclosed
Disclosure

SEC source: 0001493225-26-000082 · wk-form4_1784597751.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: Pursuant to the Agreement and Plan of Merger dated as of January 31, 2026, by and among Columbia Financial, Inc., a Delaware corporation, Columbia Financial, Inc., a Maryland corporation (Newco), Columbia Bank MHC and Northfield Bancorp, Inc. (Merger Agreement), at the effective time of the merger between Northfield Bancorp, Inc, and Newco, each issued and outstanding share of Northfield Bancorp, Inc. common stock was converted into the right to receive, at the election of the holder, either (i) 1.425 shares of Newco common stock or (ii) $14.25 in cash.

Read SEC document
June 16, 2026 Filed Jun 17, 2026 20:27 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 GrantCommon Stock 4,970 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043931 · wk-form4_1781728023.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,143

F2 · shares: The amount represents RSUs that vest on the last business day immediately preceding the 2027 annual meeting of stockholders, subject to the reporting person's continued service to the Issuer through the vesting date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:27 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 GrantCommon Stock 2,267 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043931 · wk-form4_1781728023.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,173

F1 · shares: The amount represents restricted stock units ("RSUs") that fully vested on the date of grant. Each RSU represents a right to receive one share of the Issuer's common stock.

Read SEC document
June 11, 2026 Filed Jun 11, 2026 20:42 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 4,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-26-042537 · wk-form4_1781210556.xml · derivative · entry 5

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,000 shares

Expires 2026-06-19

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.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
June 11, 2026 Filed Jun 11, 2026 20:42 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Tax withholdingCommon Stock 1,177 $40.79 $48,009.83
Disclosure

SEC source: 0001628280-26-042537 · wk-form4_1781210556.xml · nonDerivative · entry 3

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,906

F1 · kind: Represents shares that have been withheld by the Issuer to cover the exercise price of the options exercised and does not represent a sale by the Reporting Person.

Read SEC document
June 11, 2026 Filed Jun 11, 2026 20:42 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionCommon Stock 4,000 $12.00 $48,000.00
Disclosure

SEC source: 0001628280-26-042537 · wk-form4_1781210556.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,083

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 09, 2026 Filed Jun 11, 2026 20:42 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 7,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-26-042537 · wk-form4_1781210556.xml · derivative · entry 4

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,000

Underlying: Common Stock · 7,000 shares

Expires 2026-06-19

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.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
June 09, 2026 Filed Jun 11, 2026 20:42 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionCommon Stock 7,000 $12.00 $84,000.00
Disclosure

SEC source: 0001628280-26-042537 · wk-form4_1781210556.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,083

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
March 17, 2026 Filed Mar 19, 2026 15:41 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommon Stock 10,000 $13.19 $131,900.00
Disclosure

SEC source: 0001493225-26-000039 · wk-form4_1773934914.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,354

F1 · price: The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $13.13 to $13.20, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

Read SEC document
February 04, 2026 Filed Feb 5, 2026 20:44 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommon Stock 4,383 $13.69 $60,003.27
Disclosure

SEC source: 0001493225-26-000026 · wk-form4_1770324289.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,737

F1 · shares: Award vests one year from the date of grant.

F2 · shares: Each restricted stock unit represents a contingent right to receive cash equal to the value of one share of Issuer common stock.

Read SEC document
February 04, 2026 Filed Feb 6, 2026 23:13 UTC Amendment Northfield Bancorp, Inc. NFBK · Entity 29506 GrantRestricted Stock Units · Derivative 4,383 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-006169 · wk-form4a_1770419609.xml · derivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,383

Underlying: Common Stock · 4,383 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive cash equal to the value of one share of Issuer common stock on date of vesting.

F2 · derivative.exercise_date: Award vests one year from the date of grant.

F2 · derivative.expiration_date: Award vests one year from the date of grant.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 13,889 $0.00 Strike: $16.14 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 16

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,889

Underlying: Common Stock · 13,889 shares

Expires 2031-05-31

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 13,889 $0.00 Strike: $16.14 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 15

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Nonvoting Common Stock · 13,889 shares

Expires 2031-05-31

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 22,500 $0.00 Strike: $14.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 14

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,500

Underlying: Common Stock · 22,500 shares

Expires 2030-06-30

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 22,500 $0.00 Strike: $14.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 13

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Nonvoting Common Stock · 22,500 shares

Expires 2030-06-30

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 18,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 12

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,000

Underlying: Common Stock · 18,000 shares

Expires 2029-05-31

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 18,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 11

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Nonvoting Common Stock · 18,000 shares

Expires 2029-05-31

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 18,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 10

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,000

Underlying: Common Stock · 18,000 shares

Expires 2028-04-30

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 18,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 9

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Nonvoting Common Stock · 18,000 shares

Expires 2028-04-30

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 18,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 8

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,000

Underlying: Common Stock · 18,000 shares

Expires 2027-05-31

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 18,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 7

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Nonvoting Common Stock · 18,000 shares

Expires 2027-05-31

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 11,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 6

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,000

Underlying: Common Stock · 11,000 shares

Expires 2025-06-19

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 Exercise / conversionStock Option (Right to Buy) · Derivative 11,000 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 5

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Nonvoting Common Stock · 11,000 shares

Expires 2026-06-19

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.

F3 · derivative.exercise_price: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F3 · shares: The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.

F4 · derivative.exercise_date: The options are fully vested.

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August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 ConversionNonvoting Common Stock · Derivative 14,083 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 4

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,083 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

F2 · shares: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

F2 · derivative.exercise_date: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

F2 · derivative.expiration_date: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

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August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 ConversionSeries B Preferred Stock · Derivative 10,000 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · derivative · entry 3

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,000 shares

Expires not disclosed

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 · derivative.exercise_price: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F1 · shares: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F1 · derivative.exercise_date: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F1 · derivative.expiration_date: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

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August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 ConversionCommon Stock 14,083 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,083

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.

F2 · shares: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

F1 · price: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F1 · balance_after: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F2 · balance_after: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

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August 15, 2025 Filed Aug 19, 2025 20:08 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 ConversionCommon Stock 10,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-25-040797 · wk-form4_1755634076.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,083

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: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F1 · price: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F1 · balance_after: Includes 10,000 shares of Series B Preferred Stock which are held jointly with his spouse with right of survival, and that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.

F2 · balance_after: Includes 14,083 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date. Of his 14,083 shares of Nonvoting Common Stock, (i) 10,000 are held in his individual name and (ii) 4,083 are held jointly with his spouse with right of survival.

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August 13, 2025 Filed Aug 15, 2025 20:49 UTC MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 PurchaseCommon Stock 1,000 $23.00 $23,000.00
Disclosure

SEC source: 0001628280-25-040564 · wk-form4_1755290958.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,000

Read SEC document
June 20, 2025 Filed Jun 20, 2025 19:45 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 SaleCommon Stock 4,769 $11.66 $55,606.54
Disclosure

SEC source: 0001493225-25-000069 · wk-form4_1750448728.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,354

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June 18, 2025 Filed Jun 20, 2025 19:45 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 SaleCommon Stock 3,231 $11.66 $37,673.46
Disclosure

SEC source: 0001493225-25-000069 · wk-form4_1750448728.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,123

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January 24, 2025 Filed Jan 28, 2025 19:58 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommon Stock 4,631 $0.00 $0.00
Disclosure

SEC source: 0001493225-25-000014 · wk-form4_1738094314.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,354

F1 · shares: Award vests one year from the date of grant.

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January 26, 2024 Filed Jan 30, 2024 21:43 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommon Stock 4,057 $0.00 $0.00
Disclosure

SEC source: 0001493225-24-000039 · wk-form4_1706650967.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,723

F1 · shares: Award vests one year from the date of grant.

Read SEC document
January 27, 2023 Filed Jan 31, 2023 21:31 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommon Stock 3,757 $0.00 $0.00
Disclosure

SEC source: 0001493225-23-000009 · wf-form4_167520070432095.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,666

F1 · shares: Award vests one year from the date of grant.

Read SEC document
January 28, 2022 Filed Feb 1, 2022 17:35 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommom Stock 3,422 $0.00 $0.00
Disclosure

SEC source: 0001493225-22-000018 · wf-form4_164373694097334.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,909

F1 · shares: Award vests one year from the date of grant.

Read SEC document
January 29, 2021 Filed Feb 2, 2021 20:23 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommom Stock 3,641 $0.00 $0.00
Disclosure

SEC source: 0001493225-21-000012 · wf-form4_161229736270495.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,487

F1 · shares: Award vests one year from the date of grant.

Read SEC document
August 03, 2020 Filed Aug 3, 2020 20:29 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 4,200 $9.50 $39,900.00
Disclosure

SEC source: 0001493225-20-000098 · wf-form4_159648651688350.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,846

Read SEC document
July 31, 2020 Filed Aug 3, 2020 20:29 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 5,800 $9.38 $54,386.60
Disclosure

SEC source: 0001493225-20-000098 · wf-form4_159648651688350.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,646

F1 · price: The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $9.32 to $9.45, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

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May 12, 2020 Filed May 14, 2020 16:21 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 5,000 $10.27 $51,337.00
Disclosure

SEC source: 0001493225-20-000074 · wf-form4_158947327605314.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,846

F1 · price: The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $10.16 to $10.37, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

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May 05, 2020 Filed May 5, 2020 19:06 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 2,000 $10.97 $21,934.40
Disclosure

SEC source: 0001493225-20-000062 · wf-form4_158870557224593.xml · nonDerivative · entry 2

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,846

F2 · price: The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $10.94 to $10.98, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

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May 01, 2020 Filed May 5, 2020 19:06 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 8,000 $10.92 $87,326.40
Disclosure

SEC source: 0001493225-20-000062 · wf-form4_158870557224593.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,846

F1 · price: The price reported in column 4 is a weighted average price. The shares were purchased at prices ranging from $10.87 to $11.39, inclusive. The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

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February 17, 2020 Filed Feb 18, 2020 21:24 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 GrantCommom Stock 2,846 $15.81 $44,995.26
Disclosure

SEC source: 0001493225-20-000024 · wf-form4_158206103133277.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,846

F1 · shares: Shares of restricted stock that vest on February 17, 2021.

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May 30, 2019 Filed May 31, 2019 13:45 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 4,500 $14.80 $66,600.00
Disclosure

SEC source: 0001493225-19-000053 · wf-form4_155931029429141.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

Read SEC document
March 12, 2019 Filed Mar 14, 2019 21:24 UTC Northfield Bancorp, Inc. NFBK · Entity 29506 PurchaseCommom Stock 500 $14.50 $7,250.00
Disclosure

SEC source: 0001493225-19-000020 · wf-form4_155259864617123.xml · nonDerivative · entry 1

Stahlin Paul · CIK 0001764337 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 500

Read SEC document

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