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organization · Reporting owner

ADAR1 Partners, LP

Disclosed activity across 3 companies

Tapewire entity
74265
SEC CIK
0001758866

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Grace Therapeutics, Inc.ACST · Entity 726610% ownerJune 28, 2024July 11, 2024
PALVELLA THERAPEUTICS, INC.PIRS · Entity 445210% ownerAugust 09, 2024August 12, 2024

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Grace Therapeutics, Inc.

Report date June 28, 2024 · Filed July 11, 2024 · Amendment

Jointly reported with ADAR1 Capital Management, LLC

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeIndirectBy: ADAR1 Partners959,571 Reported balance Holding disclosure · report date 2024-06-28 · row 1 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 1 · Balance 959,571

F1: ADAR1 Capital Management GP, LLC is the general partner of ADAR1 Partners, LP ("ADAR1 Partners").

F2: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP. Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Common Warrant (Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $3.00 · Expires 2028-09-25IndirectBy: ADAR1 PartnersNot disclosed Reported balance Holding disclosure · report date 2024-06-28 · row 2 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 2 · Balance Not disclosed

F5: Pursuant to a Common Stock Purchase Warrant, ADAR1 Partners may purchase up to 1,268,195 of Issuer's Common Stock.

F1: ADAR1 Capital Management GP, LLC is the general partner of ADAR1 Partners, LP ("ADAR1 Partners").

F2: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP. Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Pre-Paid Warrant (Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $0.00IndirectBy: ADAR1 PartnersNot disclosed Reported balance Holding disclosure · report date 2024-06-28 · row 3 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 3 · Balance Not disclosed

F4: Pursuant to a Pre-Funded Common Stock Purchase Warrant, ADAR1 Partners may purchase up to 913,631 shares of Issuer's Common Stock, exercisable until fully filled.

F1: ADAR1 Capital Management GP, LLC is the general partner of ADAR1 Partners, LP ("ADAR1 Partners").

F2: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP. Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Filing footnotes · ownership attribution and instrument terms

F1: ADAR1 Capital Management GP, LLC is the general partner of ADAR1 Partners, LP ("ADAR1 Partners").

F2: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP. Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

F4: Pursuant to a Pre-Funded Common Stock Purchase Warrant, ADAR1 Partners may purchase up to 913,631 shares of Issuer's Common Stock, exercisable until fully filled.

F5: Pursuant to a Common Stock Purchase Warrant, ADAR1 Partners may purchase up to 1,268,195 of Issuer's Common Stock.

PALVELLA THERAPEUTICS, INC.

Report date August 09, 2024 · Filed August 12, 2024

Jointly reported with ADAR1 Capital Management, LLC

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy: ADAR1 Partners129,574 Last balance in matching sequence After 2024-08-12 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2024-08-09 · Purchase · Acquired 3,000 · Balance 127,331

F1: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP ("ADAR1 Partners"). Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Row 2 · 2024-08-12 · Purchase · Acquired 2,243 · Balance 129,574

F1: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP ("ADAR1 Partners"). Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Common StockSEC Table I · non-derivativeIndirectBy: Spearhead Insurance Solutions IDF, LLC - Series ADAR115,067 Reported balance After 2024-08-12 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2024-08-12 · Purchase · Acquired 757 · Balance 15,067

F2: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by Spearhead Insurance Solutions IDF, LLC - Series ADAR1 ("Spearhead"). Because of the relationship between Spearhead and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by Spearhead.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Filing footnotes · ownership attribution and instrument terms

F1: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP ("ADAR1 Partners"). Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F2: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by Spearhead Insurance Solutions IDF, LLC - Series ADAR1 ("Spearhead"). Because of the relationship between Spearhead and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by Spearhead.

F3: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Keros Therapeutics, Inc.

Report date October 15, 2025 · Filed October 15, 2025

Jointly reported with ADAR1 Capital Management, LLC, ADAR1 Capital Management GP, LLC, Schneeberger Daniel

Section 16 reporting ended · disclosed 2025-10-15. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy ADAR1 Partners, LP0 Reported balance After 2025-10-15 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2025-10-15 · Sale · Disposed 4,391,237 · Balance 0

F1: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Common StockSEC Table I · non-derivativeIndirectBy ADAR1 SPVI, LP0 Reported balance After 2025-10-15 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2025-10-15 · Sale · Disposed 254,669 · Balance 0

F1: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Common StockSEC Table I · non-derivativeIndirectBy Spearhead Insurance Solutions IDF, LLC0 Reported balance After 2025-10-15 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2025-10-15 · Sale · Disposed 743,358 · Balance 0

F1: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Filing footnotes · ownership attribution and instrument terms

F1: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 15, 2025 Filed Oct 15, 2025 13:24 UTC Keros Therapeutics, Inc. KROS · Entity 6242 SaleCommon Stock 743,358 $17.75 $13,194,604.50
Disclosure

SEC source: 0000902664-25-004411 · ownership.xml · nonDerivative · entry 3

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spearhead Insurance Solutions IDF, LLC

Disclosed balance after: 0

F1 · ownership.nature: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
October 15, 2025 Filed Oct 15, 2025 13:24 UTC Keros Therapeutics, Inc. KROS · Entity 6242 SaleCommon Stock 254,669 $17.75 $4,520,374.75
Disclosure

SEC source: 0000902664-25-004411 · ownership.xml · nonDerivative · entry 2

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 SPVI, LP

Disclosed balance after: 0

F1 · ownership.nature: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
October 15, 2025 Filed Oct 15, 2025 13:24 UTC Keros Therapeutics, Inc. KROS · Entity 6242 SaleCommon Stock 4,391,237 $17.75 $77,944,456.75
Disclosure

SEC source: 0000902664-25-004411 · ownership.xml · nonDerivative · entry 1

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 0

F1 · ownership.nature: The securities to which this filing relates are held directly by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Daniel Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
June 20, 2025 Filed Jun 24, 2025 16:05 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherPut Option (right to sell) · Derivative 2 $0.00 Strike: $70.00 $0.00
Disclosure

SEC source: 0001104659-25-062092 · tm2518715-1_4seq1.xml · derivative · entry 6

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spearhead Insurance Solutions IDF, LLC

Disclosed balance after: 0

Underlying: Common Stock · 200 shares

Expires 2025-06-20

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
June 20, 2025 Filed Jun 24, 2025 16:05 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherPut Option (right to sell) · Derivative 14 $0.00 Strike: $70.00 $0.00
Disclosure

SEC source: 0001104659-25-062092 · tm2518715-1_4seq1.xml · derivative · entry 5

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 0

Underlying: Common Stock · 1,400 shares

Expires 2025-06-20

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
June 20, 2025 Filed Jun 24, 2025 16:05 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherPut Option (right to sell) · Derivative 1 $0.00 Strike: $60.00 $0.00
Disclosure

SEC source: 0001104659-25-062092 · tm2518715-1_4seq1.xml · derivative · entry 4

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 0

Underlying: Common Stock · 100 shares

Expires 2025-06-20

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
June 20, 2025 Filed Jun 24, 2025 16:05 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherCommon Stock 200 $70.00 $14,000.00
Disclosure

SEC source: 0001104659-25-062092 · tm2518715-1_4seq1.xml · nonDerivative · entry 3

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spearhead Insurance Solutions IDF, LLC

Disclosed balance after: 743,358

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
June 20, 2025 Filed Jun 24, 2025 16:05 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherCommon Stock 1,400 $70.00 $98,000.00
Disclosure

SEC source: 0001104659-25-062092 · tm2518715-1_4seq1.xml · nonDerivative · entry 2

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 4,391,237

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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June 20, 2025 Filed Jun 24, 2025 16:05 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherCommon Stock 100 $60.00 $6,000.00
Disclosure

SEC source: 0001104659-25-062092 · tm2518715-1_4seq1.xml · nonDerivative · entry 1

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 4,392,637

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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May 16, 2025 Filed Jun 12, 2025 16:51 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherPut Option (obligation to buy) · Derivative 178 $0.00 Strike: $10.00 $0.00
Disclosure

SEC source: 0001104659-25-058955 · tm2517803-1_4seq1.xml · derivative · entry 3

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spearhead Insurance Solutions IDF, LLC

Disclosed balance after: 0

Underlying: Common Stock · 17,800 shares

Expires 2025-05-16

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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May 16, 2025 Filed Jun 12, 2025 16:51 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherPut Option (obligation to buy) · Derivative 836 $0.00 Strike: $10.00 $0.00
Disclosure

SEC source: 0001104659-25-058955 · tm2517803-1_4seq1.xml · derivative · entry 2

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 0

Underlying: Common Stock · 83,600 shares

Expires 2025-05-16

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
May 16, 2025 Filed Jun 12, 2025 16:51 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherPut Option (obligation to buy) · Derivative 300 $0.00 Strike: $10.00 $0.00
Disclosure

SEC source: 0001104659-25-058955 · tm2517803-1_4seq1.xml · derivative · entry 1

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 0

Underlying: Common Stock · 30,000 shares

Expires 2025-05-16

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and Spearhead Insurance Solutions IDF, LLC.

F2 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherCash Settled Total Return Swaps · Derivative 74,333 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · derivative · entry 9

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 50,000

Underlying: Common Stock · 74,333 shares

Expires not disclosed

F7 · derivative.exercise_price: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · kind: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · shares: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · price: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · derivative.exercise_date: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · derivative.expiration_date: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · derivative.underlying_shares: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F7 · balance_after: In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherCash-Settled Total Return Swaps · Derivative 500,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · derivative · entry 8

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 124,333

Underlying: Common Stock · 500,000 shares

Expires not disclosed

F6 · derivative.exercise_price: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · kind: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · shares: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · price: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · derivative.exercise_date: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · derivative.expiration_date: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · derivative.underlying_shares: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F6 · balance_after: In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 OtherCash-Settled Total Return Swaps · Derivative 325,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · derivative · entry 7

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 624,333

Underlying: Common Stock · 325,000 shares

Expires not disclosed

F5 · derivative.exercise_price: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · kind: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · shares: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · price: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · derivative.exercise_date: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · derivative.expiration_date: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · derivative.underlying_shares: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F5 · balance_after: In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 PurchaseCommon Stock 74,333 $10.33 $767,859.89
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · nonDerivative · entry 5

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 4,392,737

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 PurchaseCommon Stock 500,000 $10.33 $5,165,000.00
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · nonDerivative · entry 4

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 4,318,404

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Read SEC document
April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 PurchaseCommon Stock 325,000 $9.86 $3,203,525.00
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · nonDerivative · entry 3

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 3,818,404

F4 · price: The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.13 to $10.60, inclusive.

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 PurchaseCommon Stock 16,365 $9.40 $153,752.45
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · nonDerivative · entry 2

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spearhead Insurance Solutions IDF, LLC

Disclosed balance after: 743,558

F3 · price: The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.21 to $9.56, inclusive.

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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April 09, 2025 Filed Apr 11, 2025 21:57 UTC Keros Therapeutics, Inc. KROS · Entity 6242 PurchaseCommon Stock 18,560 $9.40 $174,374.91
Disclosure

SEC source: 0001104659-25-034321 · tm2512234-2_4seq1.xml · nonDerivative · entry 1

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

ADAR1 Capital Management GP, LLC · CIK 0001940267 · 10% owner

Schneeberger Daniel · CIK 0001861120 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By ADAR1 Partners, LP

Disclosed balance after: 3,493,404

F2 · price: The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.21 to $9.56, inclusive.

F1 · ownership.nature: As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.

F8 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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August 12, 2024 Filed Aug 12, 2024 22:48 UTC PALVELLA THERAPEUTICS, INC. PIRS · Entity 4452 PurchaseCommon Stock 757 $15.88 $12,022.98
Disclosure

SEC source: 0001940272-24-000006 · primary_doc.xml · nonDerivative · entry 3

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: Spearhead Insurance Solutions IDF, LLC - Series ADAR1

Disclosed balance after: 15,067

F2 · ownership.nature: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by Spearhead Insurance Solutions IDF, LLC - Series ADAR1 ("Spearhead"). Because of the relationship between Spearhead and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by Spearhead.

F3 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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August 12, 2024 Filed Aug 12, 2024 22:48 UTC PALVELLA THERAPEUTICS, INC. PIRS · Entity 4452 PurchaseCommon Stock 2,243 $15.88 $35,624.22
Disclosure

SEC source: 0001940272-24-000006 · primary_doc.xml · nonDerivative · entry 2

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: ADAR1 Partners

Disclosed balance after: 129,574

F1 · ownership.nature: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP ("ADAR1 Partners"). Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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August 09, 2024 Filed Aug 12, 2024 22:48 UTC PALVELLA THERAPEUTICS, INC. PIRS · Entity 4452 PurchaseCommon Stock 3,000 $14.89 $44,678.70
Disclosure

SEC source: 0001940272-24-000006 · primary_doc.xml · nonDerivative · entry 1

ADAR1 Capital Management, LLC · CIK 0001940272 · 10% owner

ADAR1 Partners, LP · CIK 0001758866 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: ADAR1 Partners

Disclosed balance after: 127,331

F1 · ownership.nature: ADAR1 Capital Management, LLC ("ADAR1 Capital"), an entity owned and controlled by Dr. Daniel Schneeberger, owns voting and investment control with respect to the shares held by ADAR1 Partners, LP ("ADAR1 Partners"). Because of the relationship between ADAR1 Partners and ADAR1 Capital, ADAR1 Capital may be deemed to beneficially own the shares held directly by ADAR1 Partners.

F3 · ownership.nature: For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

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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.