person · Reporting owner
RA Capital Nexus Fund IV, L.P.
Disclosed activity across 1 company
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Hemab Therapeutics Holdings, Inc.COAG · Entity 4476 | Director | May 04, 2026 | May 06, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Hemab Therapeutics Holdings, Inc.
Report date May 04, 2026 · Filed May 06, 2026
Jointly reported with RA CAPITAL MANAGEMENT, L.P., RA Capital Healthcare Fund LP, RA Capital Nexus Fund II, L.P., Kolchinsky Peter, Shah Rajeev M.
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 3,607,846 |
Reported balance
After 2026-05-04 transaction · row 1
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 1 · 2026-05-04 · Conversion · Acquired 3,607,846 · Balance 3,607,846 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 1,009,052 |
Reported balance
After 2026-05-04 transaction · row 2
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 2 · 2026-05-04 · Conversion · Acquired 1,009,052 · Balance 1,009,052 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F4: Held directly by Nexus Fund II. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 221,188 |
Reported balance
After 2026-05-04 transaction · row 3
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 3 · 2026-05-04 · Conversion · Acquired 221,188 · Balance 221,188 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F5: Held directly by Nexus Fund IV. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 6,149,096 |
Reported balance
After 2026-05-04 transaction · row 4
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 4 · 2026-05-04 · Purchase · Acquired 2,541,250 · Balance 6,149,096 F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 354,938 |
Reported balance
After 2026-05-04 transaction · row 5
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 5 · 2026-05-04 · Purchase · Acquired 133,750 · Balance 354,938 F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F5: Held directly by Nexus Fund IV. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 6,236,239 |
Reported balance
After 2026-05-05 transaction · row 6
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 6 · 2026-05-05 · Purchase · Acquired 87,143 · Balance 6,236,239 F6: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.00 to $24.9994 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 6,246,507 |
Reported balance
After 2026-05-05 transaction · row 7
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 7 · 2026-05-05 · Purchase · Acquired 10,268 · Balance 6,246,507 F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 6,261,118 |
Reported balance
After 2026-05-06 transaction · row 8
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 8 · 2026-05-06 · Purchase · Acquired 14,611 · Balance 6,261,118 F7: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $23.495 to $24.455 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Common StockSEC Table I · non-derivative | IndirectSee footnotes | 6,314,525 |
Reported balance
After 2026-05-06 transaction · row 9
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 9 · 2026-05-06 · Purchase · Acquired 53,407 · Balance 6,314,525 F8: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.505 to $25.00 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Series A Preferred StockSEC Table II · derivative / convertible security | IndirectSee footnotes | 0 |
Reported balance
After 2026-05-04 transaction · row 10
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 10 · 2026-05-04 · Conversion · Disposed 64,680 · Balance 0 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Series A Preferred StockSEC Table II · derivative / convertible security | IndirectSee footnotes | 0 |
Reported balance
After 2026-05-04 transaction · row 11
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 11 · 2026-05-04 · Conversion · Disposed 27,720 · Balance 0 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F4: Held directly by Nexus Fund II. |
| Series B Preferred StockSEC Table II · derivative / convertible security | IndirectSee footnotes | 0 |
Reported balance
After 2026-05-04 transaction · row 12
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 12 · 2026-05-04 · Conversion · Disposed 42,341 · Balance 0 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Series B Preferred StockSEC Table II · derivative / convertible security | IndirectSee footnotes | 0 |
Reported balance
After 2026-05-04 transaction · row 13
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 13 · 2026-05-04 · Conversion · Disposed 18,146 · Balance 0 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F4: Held directly by Nexus Fund II. |
| Series C Preferred StockSEC Table II · derivative / convertible security | IndirectSee footnotes | 0 |
Reported balance
After 2026-05-04 transaction · row 14
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 14 · 2026-05-04 · Conversion · Disposed 56,972 · Balance 0 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3: Held directly by the Fund. |
| Series C Preferred StockSEC Table II · derivative / convertible security | IndirectSee footnotes | 0 |
Reported balance
After 2026-05-04 transaction · row 15
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 15 · 2026-05-04 · Conversion · Disposed 10,054 · Balance 0 F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F5: Held directly by Nexus Fund IV. |
Filing footnotes · ownership attribution and instrument terms
F1: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date.
F2: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.
F3: Held directly by the Fund.
F4: Held directly by Nexus Fund II.
F5: Held directly by Nexus Fund IV.
F6: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.00 to $24.9994 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
F7: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $23.495 to $24.455 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
F8: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.505 to $25.00 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 06, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | PurchaseCommon Stock | 53,407 | $24.83 | $1,326,095.81 |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 9 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 6,314,525 F8 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.505 to $25.00 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 06, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | PurchaseCommon Stock | 14,611 | $23.77 | $347,303.47 |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 8 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 6,261,118 F7 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $23.495 to $24.455 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 05, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | PurchaseCommon Stock | 10,268 | $25.00 | $256,700.00 |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 7 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 6,246,507 F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 05, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | PurchaseCommon Stock | 87,143 | $24.59 | $2,142,846.37 |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 6 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 6,236,239 F6 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.00 to $24.9994 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionSeries C Preferred Stock · Derivative | 10,054 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · derivative · entry 15 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 221,188 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F5 · ownership.nature: Held directly by Nexus Fund IV. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionSeries C Preferred Stock · Derivative | 56,972 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · derivative · entry 14 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 1,253,384 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionSeries B Preferred Stock · Derivative | 18,146 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · derivative · entry 13 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 399,212 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F4 · ownership.nature: Held directly by Nexus Fund II. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionSeries B Preferred Stock · Derivative | 42,341 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · derivative · entry 12 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 931,502 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionSeries A Preferred Stock · Derivative | 27,720 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · derivative · entry 11 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 609,840 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F4 · ownership.nature: Held directly by Nexus Fund II. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionSeries A Preferred Stock · Derivative | 64,680 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · derivative · entry 10 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 1,422,960 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | PurchaseCommon Stock | 133,750 | $18.00 | $2,407,500.00 |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 5 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 354,938 F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F5 · ownership.nature: Held directly by Nexus Fund IV. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | PurchaseCommon Stock | 2,541,250 | $18.00 | $45,742,500.00 |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 4 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 6,149,096 F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionCommon Stock | 221,188 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 3 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 221,188 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F5 · ownership.nature: Held directly by Nexus Fund IV. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionCommon Stock | 1,009,052 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 2 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 1,009,052 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F4 · ownership.nature: Held directly by Nexus Fund II. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:16 UTC | Hemab Therapeutics Holdings, Inc. COAG · Entity 4476 | ConversionCommon Stock | 3,607,846 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001231919-26-000457 · form4-05062026_110527.xml · nonDerivative · entry 1 RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner RA Capital Nexus Fund II, L.P. · CIK 0001825376 · Director RA Capital Nexus Fund IV, L.P. · CIK 0002053586 · Director Kolchinsky Peter · CIK 0001384859 · Director · 10% owner Shah Rajeev M. · CIK 0001619841 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 3,607,846 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into shares of Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 22-for-1 basis, and had no expiration date. F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus II Fund, L.P. (the "Nexus Fund II") and RA Capital Nexus IV Fund, L.P. (the "Nexus Fund IV"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund II, the Nexus Fund IV, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. F3 · ownership.nature: Held directly by the Fund. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.