Last 12 months
Inside the activity.
0 purchase rows · 37 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Jan 2026 | 0 | 9 |
| Feb 2026 | 0 | 2 |
| Mar 2026 | 0 | 3 |
| Apr 2026 | 0 | 2 |
| May 2026 | 0 | 5 |
| Jun 2026 | 0 | 11 |
| Jul 2026 | 0 | 4 |
| Aug 2026 | 0 | 0 |
| Sep 2026 | 0 | 0 |
| Oct 2026 | 0 | 1 |
Latest available
Insider transactions
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 date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| June 23, 2021 Filed Jun 25, 2021 17:00 UTC |
Wallace Owen B.Chief Scientific Officer
|
GrantStock Option (Right to Buy) · Derivative | 113,298 | $0.00 Strike: $19.00 | $0.00 |
DisclosureSEC source: 0000899243-21-025984 · doc4.xml · derivative · entry 2 Wallace Owen B. · CIK 0001778843 · Chief Scientific Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 113,298 Underlying: Common Stock · 113,298 shares Expires 2031-06-22 F4 · derivative.exercise_date: 25% of this option shall vest and become exercisable on May 28, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. Read SEC document |
| June 23, 2021 Filed Jun 25, 2021 17:00 UTC |
Mayweg AlexanderDirector
|
GrantStock Option (Right to Buy) · Derivative | 47,132 | $0.00 Strike: $19.00 | $0.00 |
DisclosureSEC source: 0000899243-21-025975 · doc4.xml · derivative · entry 1 Mayweg Alexander · CIK 0001786260 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 47,132 Underlying: Common Stock · 47,132 shares Expires 2031-06-22 F1 · derivative.exercise_date: This option shall vest in 36 substantially equal monthly installments, with the first installment vesting on June 28, 2021. Read SEC document |
| April 12, 2021 Filed Jun 25, 2021 21:00 UTC |
Warmuth MarkusDirector · See Remarks
|
GrantStock Option (Right to Buy) · Derivative | 538,517 | $0.00 Strike: $6.14 | $0.00 |
DisclosureSEC source: 0000899243-21-025976 · doc4.xml · derivative · entry 1 Warmuth Markus · CIK 0001855643 · Director · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 538,517 Underlying: Common Stock · 538,517 shares Expires 2031-04-12 F1 · derivative.exercise_price: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F3 · derivative.exercise_date: 25% of this option shall vest and become exercisable on April 9, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. F1 · derivative.underlying_shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F1 · balance_after: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. Read SEC document |
| April 12, 2021 Filed Jun 25, 2021 21:01 UTC |
Tamboli AjimChief Financial Officer
|
GrantStock Option (Right to Buy) · Derivative | 100,938 | $0.00 Strike: $6.14 | $0.00 |
DisclosureSEC source: 0000899243-21-025983 · doc4.xml · derivative · entry 1 Tamboli Ajim · CIK 0001855684 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 100,938 Underlying: Common Stock · 100,938 shares Expires 2031-04-12 F1 · derivative.exercise_price: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F3 · derivative.exercise_date: 25% of this option shall vest and become exercisable on April 9, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. F1 · derivative.underlying_shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F1 · balance_after: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. Read SEC document |
| April 12, 2021 Filed Jun 25, 2021 17:00 UTC |
Blackwell KimberlyDirector
|
GrantStock Option (Right to Buy) · Derivative | 7,081 | $0.00 Strike: $6.14 | $0.00 |
DisclosureSEC source: 0000899243-21-025980 · doc4.xml · derivative · entry 1 Blackwell Kimberly · CIK 0001816465 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,081 Underlying: Common Stock · 7,081 shares Expires 2031-04-12 F1 · derivative.exercise_price: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F3 · derivative.exercise_date: 25% of this option shall vest and become exercisable on April 9, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. F1 · derivative.underlying_shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F1 · balance_after: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. Read SEC document |
| April 12, 2021 Filed Jun 25, 2021 17:01 UTC |
Siu ChristineDirector
|
GrantStock Option (Right to Buy) · Derivative | 7,081 | $0.00 Strike: $6.14 | $0.00 |
DisclosureSEC source: 0000899243-21-025977 · doc4.xml · derivative · entry 1 Siu Christine · CIK 0001743029 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,081 Underlying: Common Stock · 7,081 shares Expires 2031-04-12 F1 · derivative.exercise_price: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F3 · derivative.exercise_date: 25% of this option shall vest and become exercisable on April 9, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. F1 · derivative.underlying_shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F1 · balance_after: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. Read SEC document |
| April 12, 2021 Filed Jun 25, 2021 17:00 UTC |
Wallace Owen B.Chief Scientific Officer
|
GrantStock Option (Right to Buy) · Derivative | 387,069 | $0.00 Strike: $6.14 | $0.00 |
DisclosureSEC source: 0000899243-21-025984 · doc4.xml · derivative · entry 1 Wallace Owen B. · CIK 0001778843 · Chief Scientific Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 387,069 Underlying: Common Stock · 387,069 shares Expires 2031-04-12 F1 · derivative.exercise_price: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F3 · derivative.exercise_date: 25% of this option shall vest and become exercisable on February 8, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. F1 · derivative.underlying_shares: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. F1 · balance_after: On June 17, 2021, the Issuer completed a one-for-3.5305 reverse stock split of the Issuer's Common Stock (the "Reverse Split"). This amount has been adjusted to give effect to the Reverse Split. Read SEC document |
| March 11, 2021 Filed Jun 25, 2021 17:00 UTC |
Bolzon Bradley J PhDDirector · 10% owner
|
GrantSeries C convertible preferred stock · Derivative | 2,699,328 | $2.96 | $7,999,998.39 |
DisclosureSEC source: 0000899243-21-025978 · doc4.xml · derivative · entry 3 Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · By Versant Vantage I, L.P. Disclosed balance after: 2,699,328 Underlying: Common Stock · 764,573 shares Expires not disclosed F1 · derivative.exercise_price: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · derivative.exercise_date: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F1 · derivative.expiration_date: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F4 · ownership.nature: Shares held by Versant Vantage I, L.P. ("Versant Vantage I"). Versant Vantage I GP, ("Versant Vantage I GP") is the general partner of Versant Vantage I, and Versant Vantage I GP-GP, LLC ("Versant Vantage I GP-GP") is the general partner of Versant Vantage I GP. The Reporting Person is a managing member of Versant Vantage I GP-GP, and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I. The Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein, if any. Read SEC document |
| February 24, 2021 Filed Jun 25, 2021 17:00 UTC |
Bolzon Bradley J PhDDirector · 10% owner
|
GrantSeries B convertible preferred stock · Derivative | 2,075,000 | $2.00 | $4,150,000.00 |
DisclosureSEC source: 0000899243-21-025978 · doc4.xml · derivative · entry 2 Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · By Versant Vantage I, L.P. Disclosed balance after: 4,150,000 Underlying: Common Stock · 587,735 shares Expires not disclosed F1 · derivative.exercise_price: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · derivative.exercise_date: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F1 · derivative.expiration_date: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F4 · ownership.nature: Shares held by Versant Vantage I, L.P. ("Versant Vantage I"). Versant Vantage I GP, ("Versant Vantage I GP") is the general partner of Versant Vantage I, and Versant Vantage I GP-GP, LLC ("Versant Vantage I GP-GP") is the general partner of Versant Vantage I GP. The Reporting Person is a managing member of Versant Vantage I GP-GP, and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I. The Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein, if any. Read SEC document |
| February 24, 2021 Filed Jun 25, 2021 17:00 UTC |
Bolzon Bradley J PhDDirector · 10% owner
|
GrantSeries B convertible preferred stock · Derivative | 1,500,000 | $2.00 | $3,000,000.00 |
DisclosureSEC source: 0000899243-21-025978 · doc4.xml · derivative · entry 1 Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · By Versant Capital VI, L.P. Disclosed balance after: 3,000,000 Underlying: Common Stock · 424,869 shares Expires not disclosed F1 · derivative.exercise_price: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F2 · kind: This transaction occurred prior to the Issuer's initial public offering, and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The securities covered by such transaction were previously included on the Reporting Person's Form 3. F1 · derivative.exercise_date: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F1 · derivative.expiration_date: Each share of Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") is convertible into shares of the Issuer's Common Stock on a 3.5305-for-one basis. Upon the closing of the Issuer's initial public offering, all shares of Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 7. The Preferred Stock has no expiration date. F3 · ownership.nature: Shares held by Versant Venture Capital VI, L.P. ("Versant VI"). Versant Ventures VI GP, L.P. ("Versant Ventures VI GP") is the general partner of Versant VI, and Versant Ventures VI GP-GP, LLC ("Versant Ventures VI GP-GP") is the general partner of Versant Ventures VI GP. The Reporting Person is a managing member of Versant Ventures VI GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant VI. The Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein, if any. 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.