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Boundless Bio, Inc.

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Tapewire entity
7063
SEC CIK
0001782303
Parsed reports
73

Last 12 months

Inside the activity.

22 purchase rows · 3 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202600
Feb 202600
Mar 202600
Apr 202600
May 202600
Jun 202680
Jul 2026142
Aug 202601
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
August 26, 2026 Filed Aug 28, 2026 20:16 UTC
TANG KEVIN10% owner
SaleCommon Stock 18,300 $2.97 $54,351.00
Disclosure

SEC source: 0001178579-26-000018 · form4-08282026_080804.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,840,635

F1 · kind: The Reporting Persons have delivered to the Issuer the full amount of the disgorgeable profit arising the sale reported herein, in the amount of $10,046.70.

F2 · price: The price reported herein is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $2.90 to $3.03. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares sold at each price within the range set forth in Footnote 2.

F3 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 655,170 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 887,715 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 655,161 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 642,589 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 21, 2026 Filed Jul 21, 2026 23:38 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 2,975 $2.44 $7,259.00
Disclosure

SEC source: 0001178579-26-000017 · form4-07212026_110753.xml · nonDerivative · entry 3

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,858,935

F1 · price: The prices reported are weighted-average prices. These shares were all purchased at $2.44. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnote 1.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 655,170 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 893,434 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 655,161 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 655,170 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 23:38 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 1,623 $2.44 $3,960.12
Disclosure

SEC source: 0001178579-26-000017 · form4-07212026_110753.xml · nonDerivative · entry 2

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,855,960

F1 · price: The prices reported are weighted-average prices. These shares were all purchased at $2.44. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnote 1.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 655,170 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 893,434 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 655,161 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 655,170 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 17, 2026 Filed Jul 21, 2026 23:38 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 265 $2.44 $646.60
Disclosure

SEC source: 0001178579-26-000017 · form4-07212026_110753.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,854,337

F1 · price: The prices reported are weighted-average prices. These shares were all purchased at $2.44. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnote 1.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 655,170 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 893,434 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 655,161 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 655,170 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 16, 2026 Filed Jul 17, 2026 00:10 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 18,491 $2.44 $45,118.04
Disclosure

SEC source: 0001178579-26-000015 · form4-07172026_120745.xml · nonDerivative · entry 3

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,854,072

F4 · price: These shares were purchased in multiple transactions at prices ranging from $2.43 to $2.44.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 654,055 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 891,914 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 654,048 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 654,055 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 00:10 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 1,600 $2.44 $3,904.00
Disclosure

SEC source: 0001178579-26-000015 · form4-07172026_120745.xml · nonDerivative · entry 2

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,835,581

F3 · price: These shares were all purchased at $2.44.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 654,055 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 891,914 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 654,048 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 654,055 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 14, 2026 Filed Jul 17, 2026 00:10 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 43,878 $2.43 $106,623.54
Disclosure

SEC source: 0001178579-26-000015 · form4-07172026_120745.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,833,981

F1 · price: The prices reported are weighted-average prices. These shares were purchased in multiple transactions at prices ranging from $2.41 to $2.44. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnotes 1 and 3 through 4.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 654,055 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 891,914 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 654,048 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 654,055 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 13, 2026 Filed Jul 13, 2026 23:06 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 48,211 $2.42 $116,670.62
Disclosure

SEC source: 0001178579-26-000011 · form4-07132026_110705.xml · nonDerivative · entry 3

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,790,103

F4 · price: These shares were purchased in multiple transactions at prices ranging from $2.35 to $2.44.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 639,395 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 871,923 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 639,390 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 639,395 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 10, 2026 Filed Jul 13, 2026 23:06 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 43,367 $2.43 $105,381.81
Disclosure

SEC source: 0001178579-26-000011 · form4-07132026_110705.xml · nonDerivative · entry 2

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,741,892

F3 · price: These shares were purchased in multiple transactions at prices ranging from $2.38 to $2.48.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 639,395 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 871,923 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 639,390 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 639,395 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 09, 2026 Filed Jul 13, 2026 23:06 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 7 $2.48 $17.36
Disclosure

SEC source: 0001178579-26-000011 · form4-07132026_110705.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,698,525

F1 · price: The prices reported are weighted-average prices. These shares were all purchased at $2.48. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnotes 1 and 3 through 4.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 639,395 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 871,923 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 639,390 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 639,395 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 08, 2026 Filed Jul 9, 2026 00:06 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 14,338 $2.46 $35,271.48
Disclosure

SEC source: 0001178579-26-000010 · form4-07092026_120702.xml · nonDerivative · entry 3

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,698,518

F4 · price: These shares were purchased in multiple transactions at prices ranging from $2.42 to $2.48.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 618,407 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 843,301 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 618,403 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 618,407 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 07, 2026 Filed Jul 9, 2026 00:06 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 15,810 $2.48 $39,208.80
Disclosure

SEC source: 0001178579-26-000010 · form4-07092026_120702.xml · nonDerivative · entry 2

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,684,180

F3 · price: These shares were purchased in multiple transactions at prices ranging from $2.44 to $2.50.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 618,407 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 843,301 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 618,403 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 618,407 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 06, 2026 Filed Jul 9, 2026 00:06 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 27,062 $2.49 $67,384.38
Disclosure

SEC source: 0001178579-26-000010 · form4-07092026_120702.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,668,370

F1 · price: The prices reported are weighted-average prices. These shares were purchased in multiple transactions at prices ranging from $2.46 to $2.50. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnotes 1 and 3 through 4.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 618,407 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 843,301 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 618,403 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 618,407 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 02, 2026 Filed Jul 2, 2026 23:45 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 9,821 $2.49 $24,454.29
Disclosure

SEC source: 0001178579-26-000009 · form4-07022026_110743.xml · nonDerivative · entry 4

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,641,308

F5 · price: These shares were purchased in multiple transactions at prices ranging from $2.47 to $2.50.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 605,296 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 825,422 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 605,294 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 605,296 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 01, 2026 Filed Jul 2, 2026 23:45 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 71,612 $2.49 $178,313.88
Disclosure

SEC source: 0001178579-26-000009 · form4-07022026_110743.xml · nonDerivative · entry 3

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,631,487

F4 · price: These shares were purchased in multiple transactions at prices ranging from $2.46 to $2.50.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 605,296 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 825,422 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 605,294 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 605,296 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:43 UTC Exercise / conversionStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0001012975-26-000621 · form4.xml · derivative · entry 6

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

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.

F7 · derivative.exercise_date: The stock option vested in substantially equal monthly installments over the 11 months following June 23, 2025. The final unvested portion vested on June 15, 2026, the date of the Issuer's 2026 annual meeting of stockholders.

F1 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:43 UTC SaleCommon Stock 16,000 $2.49 $39,840.00
Disclosure

SEC source: 0001012975-26-000621 · form4.xml · nonDerivative · entry 2

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:43 UTC Exercise / conversionCommon Stock 16,000 $1.03 $16,480.00
Disclosure

SEC source: 0001012975-26-000621 · form4.xml · nonDerivative · entry 1

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 16,000

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 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:44 UTC
BYBEE CLINTON10% owner
NELSEN ROBERT10% owner
GILLIS STEVEN10% owner
Exercise / conversionStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0001012975-26-000622 · form4.xml · derivative · entry 6

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

GILLIS STEVEN · CIK 0001229592 · 10% owner

Burow Kristina · CIK 0001569248 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

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.

F7 · derivative.exercise_date: The stock option vested in substantially equal monthly installments over the 11 months following June 23, 2025. The final unvested portion vested on June 15, 2026, the date of the Issuer's 2026 annual meeting of stockholders.

F1 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:44 UTC
BYBEE CLINTON10% owner
NELSEN ROBERT10% owner
GILLIS STEVEN10% owner
SaleCommon Stock 16,000 $2.49 $39,840.00
Disclosure

SEC source: 0001012975-26-000622 · form4.xml · nonDerivative · entry 2

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

GILLIS STEVEN · CIK 0001229592 · 10% owner

Burow Kristina · CIK 0001569248 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:44 UTC
BYBEE CLINTON10% owner
NELSEN ROBERT10% owner
GILLIS STEVEN10% owner
Exercise / conversionCommon Stock 16,000 $1.03 $16,480.00
Disclosure

SEC source: 0001012975-26-000622 · form4.xml · nonDerivative · entry 1

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

GILLIS STEVEN · CIK 0001229592 · 10% owner

Burow Kristina · CIK 0001569248 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 16,000

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 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

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June 30, 2026 Filed Jul 2, 2026 23:45 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 100 $2.50 $250.00
Disclosure

SEC source: 0001178579-26-000009 · form4-07022026_110743.xml · nonDerivative · entry 2

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,559,875

F3 · price: These shares were all purchased at $2.50.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 605,296 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 825,422 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 605,294 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 605,296 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 23:45 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 25,930 $2.54 $65,862.20
Disclosure

SEC source: 0001178579-26-000009 · form4-07022026_110743.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,559,775

F1 · price: The prices reported are weighted-average prices. These shares were purchased in multiple transactions at prices ranging from $2.49 to $2.60. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnotes 1 and 3 through 5.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 605,296 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 825,422 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 605,294 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 605,296 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 29, 2026 Filed Jun 29, 2026 23:56 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 777 $2.48 $1,926.96
Disclosure

SEC source: 0001178579-26-000008 · form4-06292026_110657.xml · nonDerivative · entry 6

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,533,845

F7 · price: These shares were purchased in multiple transactions at prices ranging from $2.44 to $2.52.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 580,669 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 791,839 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 580,668 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 580,669 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 29, 2026 Filed Jun 29, 2026 23:56 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 63,985 $2.47 $158,042.95
Disclosure

SEC source: 0001178579-26-000008 · form4-06292026_110657.xml · nonDerivative · entry 5

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,533,068

F6 · price: These shares were purchased in multiple transactions at prices ranging from $2.40 to $2.59.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 580,669 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 791,839 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 580,668 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 580,669 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 26, 2026 Filed Jun 29, 2026 23:56 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 134 $2.54 $340.36
Disclosure

SEC source: 0001178579-26-000008 · form4-06292026_110657.xml · nonDerivative · entry 4

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,469,083

F5 · price: These shares were purchased in multiple transactions at prices ranging from $2.52 to $2.58.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 580,669 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 791,839 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 580,668 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 580,669 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 26, 2026 Filed Jun 29, 2026 23:56 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 75,047 $2.55 $191,369.85
Disclosure

SEC source: 0001178579-26-000008 · form4-06292026_110657.xml · nonDerivative · entry 3

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,468,949

F4 · price: These shares were purchased in multiple transactions at prices ranging from $2.46 to $2.60.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 580,669 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 791,839 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 580,668 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 580,669 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 25, 2026 Filed Jun 29, 2026 23:56 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 510 $2.56 $1,305.60
Disclosure

SEC source: 0001178579-26-000008 · form4-06292026_110657.xml · nonDerivative · entry 2

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,393,902

F3 · price: These shares were purchased in multiple transactions at prices ranging from $2.53 to $2.60.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 580,669 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 791,839 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 580,668 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 580,669 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 25, 2026 Filed Jun 29, 2026 23:56 UTC
TANG KEVIN10% owner
PurchaseCommon Stock 145,880 $2.48 $361,782.40
Disclosure

SEC source: 0001178579-26-000008 · form4-06292026_110657.xml · nonDerivative · entry 1

TANG KEVIN · CIK 0001178579 · 10% owner

TANG CAPITAL MANAGEMENT LLC · CIK 0001232621 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By LP

Disclosed balance after: 2,393,392

F1 · price: The prices reported are weighted-average prices. These shares were purchased in multiple transactions at prices ranging from $2.42 to $2.56. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the SEC staff, upon request, all information regarding the number of shares purchased at each price within the ranges set forth in Footnotes 1 and 3 through 7.

F2 · ownership.nature: Tang Capital Partners, LP ("TCP") beneficially owns 580,669 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 791,839 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 580,668 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 580,669 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

Read SEC document
June 15, 2026 Filed Jun 15, 2026 23:31 UTC GrantStock Option (right to buy) · Derivative 32,000 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001193125-26-271457 · ownership.xml · derivative · entry 1

Christensen James · CIK 0002016409 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,000

Underlying: Common Stock · 32,000 shares

Expires 2036-06-14

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 15, 2026 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 15, 2027, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 15, 2026 Filed Jun 15, 2026 23:28 UTC
Lew JenniferDirector
GrantStock Option (right to buy) · Derivative 32,000 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001193125-26-271453 · ownership.xml · derivative · entry 1

Lew Jennifer · CIK 0001465994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,000

Underlying: Common Stock · 32,000 shares

Expires 2036-06-14

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 15, 2026 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 15, 2027, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 15, 2026 Filed Jun 15, 2026 23:36 UTC GrantStock Option (right to buy) · Derivative 48,000 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001193125-26-271465 · ownership.xml · derivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,000

Underlying: Common Stock · 48,000 shares

Expires 2036-06-14

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 15, 2026 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 15, 2027, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 15, 2026 Filed Jun 15, 2026 23:40 UTC GrantStock Option (right to buy) · Derivative 32,000 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001193125-26-271474 · ownership.xml · derivative · entry 1

Whiting Nancy · CIK 0001880609 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,000

Underlying: Common Stock · 32,000 shares

Expires 2036-06-14

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 15, 2026 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 15, 2027, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
January 23, 2026 Filed Jan 26, 2026 12:00 UTC
Hornby ZacharyDirector · President & CEO
GrantStock Option (right to buy) · Derivative 600,000 $0.00 Strike: $1.26 $0.00
Disclosure

SEC source: 0001193125-26-021655 · ownership.xml · derivative · entry 1

Hornby Zachary · CIK 0001602227 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,000

Underlying: Common Stock · 600,000 shares

Expires 2036-01-22

F1 · derivative.exercise_date: The vesting commencement date is January 1, 2026. The stock option vests in 48 substantially equal monthly installments. Accordingly, 1/48th of this stock option vests on February 1, 2026, and monthly thereafter.

Read SEC document
January 23, 2026 Filed Jan 26, 2026 07:00 UTC
HINKLE DAVID ASee Remarks
GrantStock Option (right to buy) · Derivative 140,000 $0.00 Strike: $1.26 $0.00
Disclosure

SEC source: 0001193125-26-021654 · ownership.xml · derivative · entry 1

HINKLE DAVID A · CIK 0001186911 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,000

Underlying: Common Stock · 140,000 shares

Expires 2036-01-22

F1 · derivative.exercise_date: The vesting commencement date is January 1, 2026. The stock option vests in 48 substantially equal monthly installments. Accordingly, 1/48th of this stock option vests on February 1, 2026, and monthly thereafter.

Read SEC document
January 23, 2026 Filed Jan 26, 2026 07:00 UTC
Hassig ChristianChief Scientific Officer
GrantStock Option (right to buy) · Derivative 230,000 $0.00 Strike: $1.26 $0.00
Disclosure

SEC source: 0001193125-26-021657 · ownership.xml · derivative · entry 1

Hassig Christian · CIK 0001730657 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 230,000

Underlying: Common Stock · 230,000 shares

Expires 2036-01-22

F1 · derivative.exercise_date: The vesting commencement date is January 1, 2026. The stock option vests in 48 substantially equal monthly installments. Accordingly, 1/48th of this stock option vests on February 1, 2026, and monthly thereafter.

Read SEC document
January 23, 2026 Filed Jan 26, 2026 07:00 UTC
Oien JessicaSee Remarks
GrantStock Option (right to buy) · Derivative 220,000 $0.00 Strike: $1.26 $0.00
Disclosure

SEC source: 0001193125-26-021658 · ownership.xml · derivative · entry 1

Oien Jessica · CIK 0001760712 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 220,000

Underlying: Common Stock · 220,000 shares

Expires 2036-01-22

F1 · derivative.exercise_date: The vesting commencement date is January 1, 2026. The stock option vests in 48 substantially equal monthly installments. Accordingly, 1/48th of this stock option vests on February 1, 2026, and monthly thereafter.

Read SEC document
January 23, 2026 Filed Jan 26, 2026 12:00 UTC
Doebele RobertChief Medical Officer
GrantStock Option (right to buy) · Derivative 230,000 $0.00 Strike: $1.26 $0.00
Disclosure

SEC source: 0001193125-26-021656 · ownership.xml · derivative · entry 1

Doebele Robert · CIK 0001856681 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 230,000

Underlying: Common Stock · 230,000 shares

Expires 2036-01-22

F1 · derivative.exercise_date: The vesting commencement date is January 1, 2026. The stock option vests in 48 substantially equal monthly installments. Accordingly, 1/48th of this stock option vests on February 1, 2026, and monthly thereafter.

Read SEC document
June 23, 2025 Filed Jun 23, 2025 17:21 UTC GrantStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089089 · ownership.xml · derivative · entry 1

Brennan Christine · CIK 0002016488 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 23, 2025 Filed Jun 23, 2025 21:16 UTC GrantStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089085 · ownership.xml · derivative · entry 1

Christensen James · CIK 0002016409 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 23, 2025 Filed Jun 23, 2025 21:15 UTC
Lew JenniferDirector
GrantStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089082 · ownership.xml · derivative · entry 1

Lew Jennifer · CIK 0001465994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 23, 2025 Filed Jun 23, 2025 21:13 UTC GrantStock Option (right to buy) · Derivative 24,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089077 · ownership.xml · derivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 24,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 23, 2025 Filed Jun 23, 2025 21:11 UTC
Burow KristinaDirector · 10% owner
GrantStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089072 · ownership.xml · derivative · entry 1

Burow Kristina · CIK 0001569248 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
June 23, 2025 Filed Jun 23, 2025 21:09 UTC GrantStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089067 · ownership.xml · derivative · entry 1

Whiting Nancy · CIK 0001880609 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.

Read SEC document
February 03, 2025 Filed Feb 3, 2025 23:38 UTC
Doebele RobertChief Medical Officer
GrantStock Option · Derivative 180,000 $0.00 Strike: $2.23 $0.00
Disclosure

SEC source: 0000950170-25-012568 · ownership.xml · derivative · entry 1

Doebele Robert · CIK 0001856681 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,000

Underlying: Common Stock · 180,000 shares

Expires 2035-02-03

F1 · derivative.exercise_date: The option shall vest over a period of four years, with 25% of the shares subject to the option vesting on February 3, 2026, and the remaining shares subject to the option vesting in 36 equal monthly installments thereafter, subject to continued employment or service to the issuer on each such vesting date.

Read SEC document
January 22, 2025 Filed Jan 23, 2025 21:05 UTC
Hornby ZacharyDirector · President & CEO
GrantStock Option · Derivative 295,000 $0.00 Strike: $2.57 $0.00
Disclosure

SEC source: 0000950170-25-008318 · ownership.xml · derivative · entry 1

Hornby Zachary · CIK 0001602227 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 295,000

Underlying: Common Stock · 295,000 shares

Expires 2035-01-21

F1 · derivative.exercise_date: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2025.

Read SEC document
January 22, 2025 Filed Jan 23, 2025 16:05 UTC
HINKLE DAVID ASee Remarks
GrantStock Option · Derivative 65,000 $0.00 Strike: $2.57 $0.00
Disclosure

SEC source: 0000950170-25-008320 · ownership.xml · derivative · entry 1

HINKLE DAVID A · CIK 0001186911 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2035-01-21

F1 · derivative.exercise_date: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2025.

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January 22, 2025 Filed Jan 23, 2025 16:05 UTC
Hassig ChristianChief Scientific Officer
GrantStock Option · Derivative 95,000 $0.00 Strike: $2.57 $0.00
Disclosure

SEC source: 0000950170-25-008319 · ownership.xml · derivative · entry 1

Hassig Christian · CIK 0001730657 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,000

Underlying: Common Stock · 95,000 shares

Expires 2035-01-21

F1 · derivative.exercise_date: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2025.

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January 22, 2025 Filed Jan 23, 2025 16:05 UTC
Oien JessicaSee Remarks
GrantStock Option · Derivative 90,000 $0.00 Strike: $2.57 $0.00
Disclosure

SEC source: 0000950170-25-008317 · ownership.xml · derivative · entry 1

Oien Jessica · CIK 0001760712 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,000

Underlying: Common Stock · 90,000 shares

Expires 2035-01-21

F1 · derivative.exercise_date: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2025.

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August 19, 2024 Filed Aug 20, 2024 19:03 UTC
Rubin JamiChief Financial Officer
GrantStock Option · Derivative 32,468 Not disclosed Strike: $3.56 Not disclosed
Disclosure

SEC source: 0000950170-24-099296 · ownership.xml · derivative · entry 6

Rubin Jami · CIK 0001816484 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,468

Underlying: Common Stock · 32,468 shares

Expires 2034-03-26

F5 · derivative.exercise_price: The exercise price of the option is $3.56 per share, representing the fair market value per share of the common stock on the date of the repricing; provided that the exercise price will be increased to the original exercise price before repricing if, prior to the "premium end date" (as defined below), the repriced option is exercised or the reporting person's employment is terminated for any reason other than a "qualifying termination" (as defined below). The "premium end date" means the earliest of: (i) August 19, 2026, (ii) the date immediately prior to the closing of a change in control, or (iii) the date of the employee's qualifying termination. A "qualifying termination" means (a) the involuntary termination of the employee's employment by the Company due to a reduction in force (and other than for cause), or (b) the employee's termination due to death or disability.

F2 · price: On August 19, 2024, the Issuer repriced the option. Except as further described in footnote 5, all other terms of the option remain unchanged.

F4 · derivative.exercise_date: The stock option vests in 48 substantially equal monthly `installments beginning on April 27, 2024.

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