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DORAMUS MARK C

Disclosed activity across 1 company

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33577
SEC CIK
0001638649

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
SIMMONS FIRST NATIONAL CORPSFNC · Entity 4185DirectorOctober 01, 2026October 05, 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.

SIMMONS FIRST NATIONAL CORP

Report date October 01, 2026 · Filed October 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
SFNC Common StockSEC Table I · non-derivativeDirect63,528 Ending reported balance After 2026-10-01 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-10-01 · Exercise / conversion · Acquired 1,033 · Balance 62,553

F1: Restricted Stock Units convert into shares of SFNC common stock on a one-for-one basis.

Row 2 · 2026-10-01 · Exercise / conversion · Acquired 975 · Balance 63,528

F1: Restricted Stock Units convert into shares of SFNC common stock on a one-for-one basis.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-10-01 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-10-01 · Exercise / conversion · Disposed 1,033 · Balance 0

F1: Restricted Stock Units convert into shares of SFNC common stock on a one-for-one basis.

F2: The Restricted Stock Units vested on October 1, 2026.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect976 Reported balance After 2026-10-01 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-10-01 · Exercise / conversion · Disposed 975 · Balance 976

F1: Restricted Stock Units convert into shares of SFNC common stock on a one-for-one basis.

F2: The Restricted Stock Units vested on October 1, 2026.

F3: 976 Restricted Stock Units vest on January 4, 2027. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability, and other specified events in the award agreement may result in earlier vesting.

Filing footnotes · ownership attribution and instrument terms

F1: Restricted Stock Units convert into shares of SFNC common stock on a one-for-one basis.

F2: The Restricted Stock Units vested on October 1, 2026.

F3: 976 Restricted Stock Units vest on January 4, 2027. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability, and other specified events in the award agreement may result in earlier 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 02, 2018 Filed Jul 3, 2018 16:12 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 606 $30.00 $18,180.00
Disclosure

SEC source: 0001171843-18-005013 · ownership.xml · nonDerivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,908

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
July 02, 2018 Filed Jul 3, 2018 16:12 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 410 $30.00 $12,300.00
Disclosure

SEC source: 0001171843-18-005013 · ownership.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,302

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
May 02, 2018 Filed May 3, 2018 20:32 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 410 $30.35 Strike: $30.35 $12,443.50
Disclosure

SEC source: 0001171843-18-003474 · formfour.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,230

Underlying: Common · 410 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_date: The Restricted Stock Unit vested upon acceptance.

F1 · derivative.expiration_date: The Restricted Stock Unit vested upon acceptance.

F2 · balance_after: 410 Restricted Stock Units vest on July 2, 2018; 410 Restricted Stock Units vest on October 1, 2018 and 410 Restricted Stock Units vest on January 2, 2019. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

Read SEC document
May 02, 2018 Filed May 3, 2018 20:32 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 410 $30.35 $12,443.50
Disclosure

SEC source: 0001171843-18-003474 · formfour.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,892

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
May 01, 2018 Filed May 3, 2018 14:46 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 GrantRestricted Stock Unit · Derivative 1,640 $0.00 $0.00
Disclosure

SEC source: 0001171843-18-003421 · formfour.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,640

Underlying: Common · 1,640 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock.

F2 · derivative.exercise_date: 25% Restricted Stock Units vest upon acceptance of the grant; 25% Restricted Stock Units vest on July 2, 2018; 25% Restricted Stock Units vest on October 1, 2018 and 25% Restricted Stock Units vest on January 2, 2019. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

F2 · derivative.expiration_date: 25% Restricted Stock Units vest upon acceptance of the grant; 25% Restricted Stock Units vest on July 2, 2018; 25% Restricted Stock Units vest on October 1, 2018 and 25% Restricted Stock Units vest on January 2, 2019. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

Read SEC document
April 02, 2018 Filed Apr 4, 2018 19:40 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 606 $27.85 Strike: $27.85 $16,877.10
Disclosure

SEC source: 0001171843-18-002526 · formfour.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,212

Underlying: Common · 606 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_date: The Restricted Stock Unit vested on April 2, 2018.

F2 · derivative.expiration_date: The Restricted Stock Unit vested on April 2, 2018.

F1 · balance_after: On February 8, 2018, the Company effected a 2-for-1 stock split. The number of shares/units reported in this Form 4 has been adjusted to reflect the stock split.

F3 · balance_after: 50% of the Restricted Stock Units vest on July 02, 2018 and October 01, 2018. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

Read SEC document
April 02, 2018 Filed Apr 4, 2018 19:40 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 606 $27.85 $16,877.10
Disclosure

SEC source: 0001171843-18-002526 · formfour.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,482

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 · balance_after: On February 8, 2018, the Company effected a 2-for-1 stock split. The number of shares/units reported in this Form 4 has been adjusted to reflect the stock split.

Read SEC document
January 23, 2018 Filed Jan 25, 2018 16:57 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 303 $59.45 Strike: $59.45 $18,013.35
Disclosure

SEC source: 0001171843-18-000638 · formfour.xml · derivative · entry 3

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 909

Underlying: Common · 303 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.

F3 · derivative.exercise_date: The Restricted Stock Unit vested on January 23, 2018.

F3 · derivative.expiration_date: The Restricted Stock Unit vested on January 23, 2018.

F4 · balance_after: One third of the Restricted Stock Unit vests on April 02, 2018, July 02, 2018 and October 01, 2018. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

Read SEC document
January 23, 2018 Filed Jan 25, 2018 16:57 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 GrantRestricted Stock Unit · Derivative 1,212 $0.00 $0.00
Disclosure

SEC source: 0001171843-18-000638 · formfour.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,212

Underlying: Common · 1,212 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock.

F2 · derivative.exercise_date: 25% of the Restricted Stock Units vest on January 23, 2018, April 02, 2018, July 02, 2018 and October 01, 2018. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

F2 · derivative.expiration_date: 25% of the Restricted Stock Units vest on January 23, 2018, April 02, 2018, July 02, 2018 and October 01, 2018. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.

Read SEC document
January 23, 2018 Filed Jan 25, 2018 16:57 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 303 $59.45 $18,013.35
Disclosure

SEC source: 0001171843-18-000638 · formfour.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,438

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
December 08, 2017 Filed Dec 19, 2018 22:05 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 OtherSFNC 810 Not disclosed Not disclosed
Disclosure

SEC source: 0001171843-18-008503 · ownership.xml · nonDerivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 810

F1 · kind: Mr. Doramus is a member and a manager of a limited liability company ("Company") that, on December 8, 2017, received shares of SFNC common stock ("Distributed Shares") as a liquidating distribution from another limited liability company of which the Company was a member. Such other limited liability company had received SFNC common stock (including the Distributed Shares) in exchange for its shares of First Texas BHC, Inc., which merged with and into SFNC on October 19, 2017. No consideration was paid by the Company for the Distributed Shares. Because of Mr. Doramus's status with respect to the Company, at the time of the distribution, Mr. Doramus obtained an indirect pecuniary interest in 405 of the Distributed Shares.

F2 · shares: On February 8, 2018, SFNC effected a 2-for-1 stock split ("Split"). The number of shares reported in this Form 4 has been adjusted to reflect the Split.

F1 · price: Mr. Doramus is a member and a manager of a limited liability company ("Company") that, on December 8, 2017, received shares of SFNC common stock ("Distributed Shares") as a liquidating distribution from another limited liability company of which the Company was a member. Such other limited liability company had received SFNC common stock (including the Distributed Shares) in exchange for its shares of First Texas BHC, Inc., which merged with and into SFNC on October 19, 2017. No consideration was paid by the Company for the Distributed Shares. Because of Mr. Doramus's status with respect to the Company, at the time of the distribution, Mr. Doramus obtained an indirect pecuniary interest in 405 of the Distributed Shares.

F2 · balance_after: On February 8, 2018, SFNC effected a 2-for-1 stock split ("Split"). The number of shares reported in this Form 4 has been adjusted to reflect the Split.

Read SEC document
October 02, 2017 Filed Oct 3, 2017 16:09 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 252 $58.40 Strike: $58.40 $14,716.80
Disclosure

SEC source: 0001171843-17-005883 · formfour.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common · 252 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_date: The Restricted Stock Units vested on October 2, 2017. SFNC shares will be delivered within 30 days of vesting.

F1 · derivative.expiration_date: The Restricted Stock Units vested on October 2, 2017. SFNC shares will be delivered within 30 days of vesting.

Read SEC document
October 02, 2017 Filed Oct 3, 2017 16:09 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 252 $58.40 $14,716.80
Disclosure

SEC source: 0001171843-17-005883 · formfour.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,135

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
July 03, 2017 Filed Jul 5, 2017 12:55 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 252 $53.45 Strike: $53.45 $13,469.40
Disclosure

SEC source: 0001171843-17-003933 · form4.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252

Underlying: Common · 252 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_date: The Restricted Stock Units vested on July 3, 2017.

F1 · derivative.expiration_date: The Restricted Stock Units vested on July 3, 2017.

F2 · balance_after: The balance of the Restricted Stock Units vest on October 1, 2017. SFNC shares will be delivered within 30 days of vesting.

Read SEC document
July 03, 2017 Filed Jul 5, 2017 12:55 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 252 $53.45 $13,469.40
Disclosure

SEC source: 0001171843-17-003933 · form4.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,883

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
May 01, 2017 Filed May 2, 2017 21:26 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 735 $54.45 Strike: $54.45 $40,020.75
Disclosure

SEC source: 0001171843-17-002520 · f4_doramus050217.xml · derivative · entry 3

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common · 735 shares

Expires 2027-05-01

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
May 01, 2017 Filed May 2, 2017 21:26 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 GrantRestricted Stock Unit · Derivative 735 $54.45 Strike: $54.45 $40,020.75
Disclosure

SEC source: 0001171843-17-002520 · f4_doramus050217.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 735

Underlying: Common · 735 shares

Expires 2027-05-01

Read SEC document
May 01, 2017 Filed May 2, 2017 21:26 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 735 $54.45 $40,020.75
Disclosure

SEC source: 0001171843-17-002520 · f4_doramus050217.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,631

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
April 03, 2017 Filed Apr 5, 2017 16:47 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionRestricted Stock Unit · Derivative 253 $54.00 Strike: $54.00 $13,662.00
Disclosure

SEC source: 0001171843-17-001980 · form4.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 504

Underlying: Common · 253 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_date: One half of the Restricted Stock Unit vests on July 1 and October 1, 2017. SFNC shares will be delivered within 30 days of vesting.

F1 · derivative.expiration_date: One half of the Restricted Stock Unit vests on July 1 and October 1, 2017. SFNC shares will be delivered within 30 days of vesting.

Read SEC document
April 03, 2017 Filed Apr 5, 2017 16:47 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 Exercise / conversionSFNC 253 $54.00 $13,662.00
Disclosure

SEC source: 0001171843-17-001980 · form4.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,896

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
January 24, 2017 Filed Jan 26, 2017 00:27 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 GrantRestricted Stock Unit · Derivative 757 $0.00 $0.00
Disclosure

SEC source: 0001171843-17-000438 · form4doramus.xml · derivative · entry 2

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 757

Underlying: Common · 757 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock.

F2 · derivative.exercise_date: One third of the Restricted Stock Unit vests on April 1, July 1 and October 1, 2017. SFNC shares will be delivered within 30 days of vesting.

F2 · derivative.expiration_date: One third of the Restricted Stock Unit vests on April 1, July 1 and October 1, 2017. SFNC shares will be delivered within 30 days of vesting.

Read SEC document
January 24, 2017 Filed Jan 26, 2017 00:27 UTC SIMMONS FIRST NATIONAL CORP SFNC · Entity 4185 GrantSFNC 253 $61.40 $15,534.20
Disclosure

SEC source: 0001171843-17-000438 · form4doramus.xml · nonDerivative · entry 1

DORAMUS MARK C · CIK 0001638649 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,643

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.