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Harmon Seth

Disclosed activity across 1 company

Tapewire entity
62053
SEC CIK
0001993300

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Viridian Therapeutics, Inc.\DEVRDN · Entity 4316Chief Financial OfficerMarch 03, 2026March 09, 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.

Viridian Therapeutics, Inc.\DE

Report date March 03, 2026 · Filed March 09, 2026 · Amendment

Amendment: balances below belong to this corrected disclosure, not necessarily a complete replacement of earlier positions.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect7,850 Reported balance After 2026-03-03 transaction · row 1 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 1 · 2026-03-03 · Tax withholding · Disposed 2,031 · Balance 7,850

F1: This amendment corrects the number of shares and price sold to cover taxes on the initial Form 4 filed on March 4, 2026, as well as the resulting total number of shares beneficially owned following all transactions reported in the initial Form 4.

Filing footnotes · ownership attribution and instrument terms

F1: This amendment corrects the number of shares and price sold to cover taxes on the initial Form 4 filed on March 4, 2026, as well as the resulting total number of shares beneficially owned following all transactions reported in the initial Form 4.

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
March 03, 2026 Filed Mar 4, 2026 19:15 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 Exercise / conversionRestricted Stock Units · Derivative 6,267 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-092071 · ownership.xml · derivative · entry 5

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,801

Underlying: Common Stock · 6,267 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: Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of common stock of the Issuer.

F4 · derivative.exercise_date: The RSUs vest over a four year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, March 3, 2025, subject to the Reporting Person's continued service to Issuer through each vesting date.

F4 · derivative.expiration_date: The RSUs vest over a four year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, March 3, 2025, subject to the Reporting Person's continued service to Issuer through each vesting date.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 19:15 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 Tax withholdingCommon Stock 2,091 $29.32 $61,308.12
Disclosure

SEC source: 0001193125-26-092071 · ownership.xml · nonDerivative · entry 2

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,790

F5 · balance_after: Includes 903 shares acquired on March 17, 2025 under Viridian Therapeutics, Inc.'s 2016 Employee Stock Purchase Plan and 1,000 shares acquired on September 17, 2025 under Viridian Therapeutics, Inc.'s 2025 Employee Stock Purchase Plan in transactions that were exempt under Rule 16b-3(c).

Read SEC document
March 03, 2026 Filed Mar 4, 2026 19:15 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 Exercise / conversionCommon Stock 6,267 Not disclosed Not disclosed
Disclosure

SEC source: 0001193125-26-092071 · ownership.xml · nonDerivative · entry 1

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,881

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 · price: Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of common stock of the Issuer.

F5 · balance_after: Includes 903 shares acquired on March 17, 2025 under Viridian Therapeutics, Inc.'s 2016 Employee Stock Purchase Plan and 1,000 shares acquired on September 17, 2025 under Viridian Therapeutics, Inc.'s 2025 Employee Stock Purchase Plan in transactions that were exempt under Rule 16b-3(c).

Read SEC document
March 03, 2026 Filed Mar 9, 2026 19:49 UTC Amendment Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 Tax withholdingCommon Stock 2,031 $30.19 $61,315.89
Disclosure

SEC source: 0001193125-26-099023 · ownership.xml · nonDerivative · entry 1

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,850

F1 · shares: This amendment corrects the number of shares and price sold to cover taxes on the initial Form 4 filed on March 4, 2026, as well as the resulting total number of shares beneficially owned following all transactions reported in the initial Form 4.

F1 · balance_after: This amendment corrects the number of shares and price sold to cover taxes on the initial Form 4 filed on March 4, 2026, as well as the resulting total number of shares beneficially owned following all transactions reported in the initial Form 4.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 19:15 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 GrantRestricted Stock Units · Derivative 20,550 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-092071 · ownership.xml · derivative · entry 4

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,550

Underlying: Common Stock · 20,550 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of common stock of the Issuer.

F3 · derivative.exercise_date: The RSUs vest over a four year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, March 2, 2026, subject to the Reporting Person's continued service to Issuer through each vesting date.

F3 · derivative.expiration_date: The RSUs vest over a four year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, March 2, 2026, subject to the Reporting Person's continued service to Issuer through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 19:15 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 GrantStock Option (Right to Buy) · Derivative 102,850 $0.00 Strike: $30.25 $0.00
Disclosure

SEC source: 0001193125-26-092071 · ownership.xml · derivative · entry 3

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,850

Underlying: Common Stock · 102,850 shares

Expires 2036-03-02

F1 · derivative.exercise_date: The option vests and becomes exercisable in 48 equal monthly installments following the date of the grant, subject to the Reporting Person's continued service to Issuer through each vesting date. The date of the grant is March 2, 2026.

Read SEC document
March 03, 2025 Filed Mar 4, 2025 21:12 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 GrantRestricted Stock Units · Derivative 25,068 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-032884 · ownership.xml · derivative · entry 2

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,068

Underlying: Common Stock · 25,068 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of common stock of the Issuer.

F3 · derivative.exercise_date: The RSUs vest over a four year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, March 3, 2025, subject to the Reporting Person's continued service to Issuer through each vesting date.

F3 · derivative.expiration_date: The RSUs vest over a four year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, March 3, 2025, subject to the Reporting Person's continued service to Issuer through each vesting date.

Read SEC document
March 03, 2025 Filed Mar 4, 2025 21:12 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 GrantStock Option (Right to Buy) · Derivative 150,407 $0.00 Strike: $14.41 $0.00
Disclosure

SEC source: 0000950170-25-032884 · ownership.xml · derivative · entry 1

Harmon Seth · CIK 0001993300 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,407

Underlying: Common Stock · 150,407 shares

Expires 2035-03-03

F1 · derivative.exercise_date: The option vests and becomes exercisable in 48 equal monthly installments following the date of the grant, subject to the Reporting Person's continued service to Issuer through each vesting date. The date of the grant is March 3, 2025.

Read SEC document
November 10, 2023 Filed Nov 13, 2023 17:17 UTC Viridian Therapeutics, Inc.\DE VRDN · Entity 4316 GrantStock Option (Right to Buy) · Derivative 270,000 $0.00 Strike: $13.76 $0.00
Disclosure

SEC source: 0000950170-23-063124 · ownership.xml · derivative · entry 1

Harmon Seth · CIK 0001993300 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,000

Underlying: Common Stock · 270,000 shares

Expires 2033-11-10

F1 · derivative.exercise_date: The option vests in equal monthly installments through November 10, 2027, subject to the Reporting Person's continued service to Issuer through each vesting date.

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.