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ALT

Altimmune, Inc.

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5349
SEC CIK
0001326190
Parsed reports
367

Last 12 months

Inside the activity.

11 purchase rows · 0 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202530
Jan 202620
Feb 202600
Mar 202620
Apr 202630
May 202600
Jun 202600
Jul 202600
Aug 202610
Sep 202600
Oct 202600

Latest available

Insider transactions

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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 dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
October 01, 2026 Filed Oct 3, 2026 00:17 UTC
MENZIUSO RICHARD THOMASPrincipal Accounting Officer
GrantRestricted Stock Units · Derivative 36,234 $0.00 $0.00
Disclosure

SEC source: 0002156820-26-000004 · form4-10022026_081031.xml · derivative · entry 2

MENZIUSO RICHARD THOMAS · CIK 0002156820 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,234

Underlying: Common Stock, par value $0.0001 · 36,234 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration dat.

F3 · derivative.expiration_date: The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration dat.

Read SEC document
October 01, 2026 Filed Oct 3, 2026 00:17 UTC
MENZIUSO RICHARD THOMASPrincipal Accounting Officer
GrantStock Options (option to buy) · Derivative 84,546 $0.00 Strike: $2.76 $0.00
Disclosure

SEC source: 0002156820-26-000004 · form4-10022026_081031.xml · derivative · entry 1

MENZIUSO RICHARD THOMAS · CIK 0002156820 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,546

Underlying: Common Stock, par value $0.0001 · 84,546 shares

Expires 2036-10-01

F1 · derivative.exercise_date: The shares underlying the option become vested and exercisable over four (4) years with 25% of the shares vesting on October 1, 2027, with the remainder vesting in equal monthly installments for the following thirty-six (36) months, subject to the reporting person's continued service on each applicable vesting date.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:10 UTC
Arbet-Engels ChristopheChief Medical Officer
Exercise / conversionRestricted Stock Units · Derivative 37,500 $0.00 $0.00
Disclosure

SEC source: 0001802615-26-000002 · form4-10052026_041009.xml · derivative · entry 3

Arbet-Engels Christophe · CIK 0001802615 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,500

Underlying: Common Stock, par value $0.0001 · 37,500 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:10 UTC
Arbet-Engels ChristopheChief Medical Officer
Tax withholdingCommon Stock, par value $0.0001 12,679 $2.76 $34,994.04
Disclosure

SEC source: 0001802615-26-000002 · form4-10052026_041009.xml · nonDerivative · entry 2

Arbet-Engels Christophe · CIK 0001802615 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,821

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:10 UTC
Arbet-Engels ChristopheChief Medical Officer
Exercise / conversionCommon Stock, par value $0.0001 37,500 $0.00 $0.00
Disclosure

SEC source: 0001802615-26-000002 · form4-10052026_041009.xml · nonDerivative · entry 1

Arbet-Engels Christophe · CIK 0001802615 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,500

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:05 UTC
WEAVER GREGORY LChief Financial Officer
Exercise / conversionRestricted Stock Units · Derivative 14,475 $0.00 $0.00
Disclosure

SEC source: 0001251779-26-000011 · form4-10052026_041006.xml · derivative · entry 3

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,425

Underlying: Common Stock, par value $0.0001 · 14,475 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:05 UTC
WEAVER GREGORY LChief Financial Officer
Tax withholdingCommon Stock, par value $0.0001 4,379 $2.76 $12,086.04
Disclosure

SEC source: 0001251779-26-000011 · form4-10052026_041006.xml · nonDerivative · entry 2

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,927

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:05 UTC
WEAVER GREGORY LChief Financial Officer
Exercise / conversionCommon Stock, par value $0.0001 14,475 $0.00 $0.00
Disclosure

SEC source: 0001251779-26-000011 · form4-10052026_041006.xml · nonDerivative · entry 1

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,306

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
September 16, 2026 Filed Sep 17, 2026 20:05 UTC
Richardson Linda MChief Commercial Officer
Exercise / conversionRestricted Stock Units · Derivative 24,000 $0.00 $0.00
Disclosure

SEC source: 0001595064-26-000002 · form4-09172026_040911.xml · derivative · entry 3

Richardson Linda M · CIK 0001595064 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,000

Underlying: Common Stock, par value $0.0001 · 24,000 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs become vested over four (4) years with 25% of the shares vesting on September 16, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested over four (4) years with 25% of the shares vesting on September 16, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
September 16, 2026 Filed Sep 17, 2026 20:05 UTC
Richardson Linda MChief Commercial Officer
Tax withholdingCommon Stock, par value $0.0001 6,826 $3.24 $22,116.24
Disclosure

SEC source: 0001595064-26-000002 · form4-09172026_040911.xml · nonDerivative · entry 2

Richardson Linda M · CIK 0001595064 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,174

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
September 16, 2026 Filed Sep 17, 2026 20:05 UTC
Richardson Linda MChief Commercial Officer
Exercise / conversionCommon Stock, par value $0.0001 24,000 $0.00 $0.00
Disclosure

SEC source: 0001595064-26-000002 · form4-09172026_040911.xml · nonDerivative · entry 1

Richardson Linda M · CIK 0001595064 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,000

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
August 13, 2026 Filed Aug 13, 2026 20:05 UTC
Durso Jerome BenedictDirector · President and CEO
PurchaseCommon Stock, par value $0.0001 15,000 $2.95 $44,250.00
Disclosure

SEC source: 0001698665-26-000007 · form4-08132026_040801.xml · nonDerivative · entry 1

Durso Jerome Benedict · CIK 0001698665 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,500

Read SEC document
July 31, 2026 Filed Aug 3, 2026 20:05 UTC
WEAVER GREGORY LChief Financial Officer
GrantCommon Stock, par value $0.0001 1,753 $2.41 $4,231.74
Disclosure

SEC source: 0001251779-26-000009 · form4-08032026_040813.xml · nonDerivative · entry 1

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,831

F1 · kind: These shares were purchased due to participation by the reporting individual in the Issuer's 2019 Employee Stock Purchase Plan ("ESPP"). It pertains to the ESPP purchase period from February 1, 2026 through July 31, 2026.

F2 · price: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on July 31, 2026.

Read SEC document
July 31, 2026 Filed Aug 3, 2026 20:05 UTC
Roberts M ScotChief Scientific Officer
GrantCommon Stock, par value $0.0001 875 $2.41 $2,112.25
Disclosure

SEC source: 0001705905-26-000010 · form4-08032026_040815.xml · nonDerivative · entry 1

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,699

F1 · kind: These shares were purchased due to participation by the reporting individual in the Issuer's 2019 Employee Stock Purchase Plan ("ESPP"). It pertains to the ESPP purchase period from February 1, 2026 through July 31, 2026.

F2 · price: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on July 31, 2026.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:13 UTC
Pisano WayneDirector
GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001743611-26-000004 · form4-05012026_080524.xml · derivative · entry 1

Pisano Wayne · CIK 0001743611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:08 UTC
GILL JOHNDirector
GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001409939-26-000004 · form4-05012026_080538.xml · derivative · entry 1

GILL JOHN · CIK 0001409939 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:23 UTC GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001960596-26-000002 · form4-05012026_080512.xml · derivative · entry 1

Lawver Teri L · CIK 0001960596 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:16 UTC GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001705904-26-000002 · form4-05012026_080505.xml · derivative · entry 1

Schafer Klaus · CIK 0001705904 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:20 UTC GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001555132-26-000008 · form4-05012026_080545.xml · derivative · entry 1

Sohn Catherine A. · CIK 0001555132 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:18 UTC GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001527204-26-000002 · form4-05012026_080536.xml · derivative · entry 1

Jorkasky Diane · CIK 0001527204 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:05 UTC GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001201196-26-000002 · form4-05012026_080555.xml · derivative · entry 1

SAYARE MITCHEL · CIK 0001201196 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
May 01, 2026 Filed May 1, 2026 20:11 UTC GrantStock Options (option to buy) · Derivative 48,800 $0.00 Strike: $2.82 $0.00
Disclosure

SEC source: 0001705562-26-000002 · form4-05012026_080500.xml · derivative · entry 1

Hodges Philip · CIK 0001705562 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,800

Underlying: Common Stock, par value $0.0001 · 48,800 shares

Expires 2036-05-01

F1 · security: The options were granted pursuant to the Company's non-employee director compensation policy.

F2 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following May 1, 2026, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
April 06, 2026 Filed Apr 6, 2026 20:05 UTC
GILL JOHNDirector
PurchaseCommon Stock, par value $0.0001 9,200 $3.41 $31,349.92
Disclosure

SEC source: 0001409939-26-000002 · form4-04062026_040403.xml · nonDerivative · entry 1

GILL JOHN · CIK 0001409939 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,700

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.4050 to $3.4080, inclusive. The reporting person undertakes to provide to Altimmune, Inc., any security holder of Altimmune, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Read SEC document
April 01, 2026 Filed Apr 1, 2026 20:05 UTC
WEAVER GREGORY LChief Financial Officer
PurchaseCommon Stock, par value $0.0001 10,000 $3.15 $31,499.00
Disclosure

SEC source: 0001251779-26-000007 · form4-04012026_040406.xml · nonDerivative · entry 1

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,078

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.1450 to $3.1499, inclusive. The reporting person undertakes to provide to Altimmune, Inc., any security holder of Altimmune, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Read SEC document
April 01, 2026 Filed Apr 1, 2026 20:05 UTC
Durso Jerome BenedictDirector · President and CEO
PurchaseCommon Stock, par value $0.0001 15,000 $3.14 $47,100.00
Disclosure

SEC source: 0001698665-26-000005 · form4-04012026_040404.xml · nonDerivative · entry 1

Durso Jerome Benedict · CIK 0001698665 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,500

Read SEC document
March 06, 2026 Filed Mar 9, 2026 11:05 UTC
WEAVER GREGORY LChief Financial Officer
PurchaseCommon Stock, par value $0.0001 5,000 $3.54 $17,700.00
Disclosure

SEC source: 0001251779-26-000005 · form4-03092026_070301.xml · nonDerivative · entry 1

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,078

Read SEC document
March 06, 2026 Filed Mar 9, 2026 11:00 UTC
Durso Jerome BenedictDirector · President and CEO
PurchaseCommon Stock, par value $0.0001 20,000 $3.54 $70,790.00
Disclosure

SEC source: 0001698665-26-000003 · form4-03092026_070301.xml · nonDerivative · entry 1

Durso Jerome Benedict · CIK 0001698665 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,500

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.5300 to $3.5500, inclusive. The reporting person undertakes to provide to Altimmune, Inc., any security holder of Altimmune, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Read SEC document
February 26, 2026 Filed Feb 27, 2026 21:10 UTC
Roberts M ScotChief Scientific Officer
GrantRestricted Stock Units · Derivative 95,430 $0.00 $0.00
Disclosure

SEC source: 0001705905-26-000008 · form4-02272026_040203.xml · derivative · entry 2

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,430

Underlying: Common Stock, par value $0.0001 · 95,430 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs become vested over four (4) years with 25% of the shares vesting February 26, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested over four (4) years with 25% of the shares vesting February 26, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
February 26, 2026 Filed Feb 27, 2026 21:10 UTC
Roberts M ScotChief Scientific Officer
GrantStock Options (option to buy) · Derivative 222,670 $0.00 Strike: $4.46 $0.00
Disclosure

SEC source: 0001705905-26-000008 · form4-02272026_040203.xml · derivative · entry 1

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 222,670

Underlying: Common Stock, par value $0.0001 · 222,670 shares

Expires 2036-02-26

F1 · derivative.exercise_date: The shares underlying the option become vested and exercisable over four (4) years with 25% of the shares vesting on February 26, 2027, with the remainder vesting in equal monthly installments for the following thirty-six (36) months, subject to the reporting person's continued service on each applicable vesting date.

Read SEC document
February 26, 2026 Filed Feb 27, 2026 21:05 UTC
WEAVER GREGORY LChief Financial Officer
GrantRestricted Stock Units · Derivative 111,000 $0.00 $0.00
Disclosure

SEC source: 0001251779-26-000002 · form4-02272026_040231.xml · derivative · entry 2

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,000

Underlying: Common Stock, par value $0.0001 · 111,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs become vested over four (4) years with 25% of the shares vesting February 26, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested over four (4) years with 25% of the shares vesting February 26, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
February 26, 2026 Filed Feb 27, 2026 21:05 UTC
WEAVER GREGORY LChief Financial Officer
GrantStock Options (option to buy) · Derivative 259,000 $0.00 Strike: $4.46 $0.00
Disclosure

SEC source: 0001251779-26-000002 · form4-02272026_040231.xml · derivative · entry 1

WEAVER GREGORY L · CIK 0001251779 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 259,000

Underlying: Common Stock, par value $0.0001 · 259,000 shares

Expires 2036-02-26

F1 · derivative.exercise_date: The shares underlying the option become vested and exercisable over four (4) years with 25% of the shares vesting on February 26, 2027, with the remainder vesting in equal monthly installments for the following thirty-six (36) months, subject to the reporting person's continued service on each applicable vesting date.

Read SEC document
February 02, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
Exercise / conversionRestricted Stock Units · Derivative 7,775 $0.00 $0.00
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · derivative · entry 7

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.0001 · 7,775 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F6 · derivative.exercise_date: The RSUs become vested in substantially equal annual installments over the 4 years following February 2, 2022, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F6 · derivative.expiration_date: The RSUs become vested in substantially equal annual installments over the 4 years following February 2, 2022, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
February 02, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
Tax withholdingCommon Stock, par value $0.0001 2,329 $5.55 $12,925.95
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · nonDerivative · entry 5

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,824

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
February 02, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
Exercise / conversionCommon Stock, par value $0.0001 7,775 $0.00 $0.00
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · nonDerivative · entry 4

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,153

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
January 31, 2026 Filed Feb 2, 2026 21:15 UTC
Garg Vipin KDirector
GrantCommon Stock, par value $0.0001 6,926 $3.07 $21,262.82
Disclosure

SEC source: 0001515813-26-000006 · form4-02022026_040201.xml · nonDerivative · entry 3

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 424,519

F3 · kind: These shares were purchased due to participation by the reporting individual in the Issuer's 2019 Employee Stock Purchase Plan ("ESPP"). It pertains to the ESPP purchase period from August 1, 2025 through January 31, 2026

F4 · price: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on August 1, 2025

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January 31, 2026 Filed Feb 2, 2026 21:10 UTC
Jordt Raymond MChief Business Officer
GrantCommon Stock, par value $0.0001 4,571 $3.07 $14,032.97
Disclosure

SEC source: 0001960780-26-000008 · form4-02022026_040201.xml · nonDerivative · entry 1

Jordt Raymond M · CIK 0001960780 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,107

F1 · kind: These shares were purchased due to participation by the reporting individual in the Issuer's 2019 Employee Stock Purchase Plan ("ESPP"). It pertains to the ESPP purchase period from August 1, 2025 through January 31, 2026.

F2 · price: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on August 1, 2025.

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January 31, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
GrantCommon Stock, par value $0.0001 5,567 $3.07 $17,090.69
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · nonDerivative · entry 3

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,378

F3 · kind: These shares were purchased due to participation by the reporting individual in the Issuer's 2019 Employee Stock Purchase Plan ("ESPP"). It pertains to the ESPP purchase period from August 1, 2025 through January 31, 2026.

F4 · price: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on August 1, 2025.

Read SEC document
January 30, 2026 Filed Feb 2, 2026 21:15 UTC
Garg Vipin KDirector
Exercise / conversionRestricted Stock Units · Derivative 26,775 $0.00 $0.00
Disclosure

SEC source: 0001515813-26-000006 · form4-02022026_040201.xml · derivative · entry 4

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,775

Underlying: Common Stock, par value $0.0001 · 26,775 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F5 · derivative.exercise_date: The RSUs become vested in substantially equal annual installments over the 4 years following January 30, 2023, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F5 · derivative.expiration_date: The RSUs become vested in substantially equal annual installments over the 4 years following January 30, 2023, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
January 30, 2026 Filed Feb 2, 2026 21:15 UTC
Garg Vipin KDirector
Tax withholdingCommon Stock, par value $0.0001 11,632 $5.60 $65,139.20
Disclosure

SEC source: 0001515813-26-000006 · form4-02022026_040201.xml · nonDerivative · entry 2

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 417,593

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
January 30, 2026 Filed Feb 2, 2026 21:15 UTC
Garg Vipin KDirector
Exercise / conversionCommon Stock, par value $0.0001 26,775 $0.00 $0.00
Disclosure

SEC source: 0001515813-26-000006 · form4-02022026_040201.xml · nonDerivative · entry 1

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 429,225

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
January 30, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
Exercise / conversionRestricted Stock Units · Derivative 9,275 $0.00 $0.00
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · derivative · entry 6

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,275

Underlying: Common Stock, par value $0.0001 · 9,275 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F5 · derivative.exercise_date: The RSUs become vested in substantially equal annual installments over the 4 years following January 30, 2023, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F5 · derivative.expiration_date: The RSUs become vested in substantially equal annual installments over the 4 years following January 30, 2023, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
January 30, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
Tax withholdingCommon Stock, par value $0.0001 2,859 $5.60 $16,010.40
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · nonDerivative · entry 2

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,811

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
January 30, 2026 Filed Feb 3, 2026 21:15 UTC
Roberts M ScotChief Scientific Officer
Exercise / conversionCommon Stock, par value $0.0001 9,275 $0.00 $0.00
Disclosure

SEC source: 0001705905-26-000006 · form4-02032026_040235.xml · nonDerivative · entry 1

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,670

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:15 UTC
Jordt Raymond MChief Business Officer
Exercise / conversionRestricted Stock Units · Derivative 15,850 $0.00 $0.00
Disclosure

SEC source: 0001960780-26-000006 · form4-01292026_040101.xml · derivative · entry 3

Jordt Raymond M · CIK 0001960780 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,550

Underlying: Common Stock, par value $0.0001 · 15,850 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:15 UTC
Jordt Raymond MChief Business Officer
Tax withholdingCommon Stock, par value $0.0001 4,229 $6.18 $26,135.22
Disclosure

SEC source: 0001960780-26-000006 · form4-01292026_040101.xml · nonDerivative · entry 2

Jordt Raymond M · CIK 0001960780 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,536

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:15 UTC
Jordt Raymond MChief Business Officer
Exercise / conversionCommon Stock, par value $0.0001 15,850 $0.00 $0.00
Disclosure

SEC source: 0001960780-26-000006 · form4-01292026_040101.xml · nonDerivative · entry 1

Jordt Raymond M · CIK 0001960780 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,765

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:10 UTC
Garg Vipin KDirector
Exercise / conversionRestricted Stock Units · Derivative 41,200 $0.00 $0.00
Disclosure

SEC source: 0001515813-26-000004 · form4-01292026_040103.xml · derivative · entry 3

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,600

Underlying: Common Stock, par value $0.0001 · 41,200 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:10 UTC
Garg Vipin KDirector
Tax withholdingCommon Stock, par value $0.0001 17,898 $6.18 $110,609.64
Disclosure

SEC source: 0001515813-26-000004 · form4-01292026_040103.xml · nonDerivative · entry 2

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 402,450

F2 · kind: Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:10 UTC
Garg Vipin KDirector
Exercise / conversionCommon Stock, par value $0.0001 41,200 $0.00 $0.00
Disclosure

SEC source: 0001515813-26-000004 · form4-01292026_040103.xml · nonDerivative · entry 1

Garg Vipin K · CIK 0001515813 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 420,348

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

Read SEC document
January 27, 2026 Filed Jan 29, 2026 21:05 UTC
Roberts M ScotChief Scientific Officer
Exercise / conversionRestricted Stock Units · Derivative 15,850 $0.00 $0.00
Disclosure

SEC source: 0001705905-26-000004 · form4-01292026_040101.xml · derivative · entry 3

Roberts M Scot · CIK 0001705905 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,550

Underlying: Common Stock, par value $0.0001 · 15,850 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: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.

F3 · derivative.exercise_date: The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

F3 · derivative.expiration_date: The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration 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.