Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| ACCELERON PHARMA INCXLRN · Entity 15780 | EVP, Chief Business Officer | January 02, 2020 | January 03, 2020 |
| Disc Medicine, Inc.IRON · Entity 2273 | Director · Chief Executive Officer | September 15, 2026 | September 16, 2026 |
| Gossamer Bio, Inc.GOSS · Entity 6928 | Director | September 23, 2026 | September 25, 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.
ACCELERON PHARMA INC
Report date January 02, 2020 · Filed January 03, 2020
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 53,316 |
Ending reported balance
After 2020-01-02 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2020-01-02 · Sale · Disposed 1,600 · Balance 57,558 F1: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.12 to $52.83 inclusive. The reporting person undertakes to provide Acceleron Pharma Inc., any security holder of Acceleron Pharma Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4. Row 2 · 2020-01-02 · Sale · Disposed 4,242 · Balance 53,316 F1: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.12 to $52.84 inclusive. The reporting person undertakes to provide Acceleron Pharma Inc., any security holder of Acceleron Pharma Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (3) to this Form 4. |
Filing footnotes · ownership attribution and instrument terms
F1: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.12 to $52.83 inclusive. The reporting person undertakes to provide Acceleron Pharma Inc., any security holder of Acceleron Pharma Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4.
F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.12 to $52.84 inclusive. The reporting person undertakes to provide Acceleron Pharma Inc., any security holder of Acceleron Pharma Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (3) to this Form 4.
Disc Medicine, Inc.
Report date September 15, 2026 · Filed September 16, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 262,064 |
Reported balance
After 2026-09-15 transaction · row 1
1 source rowRow 1 · 2026-09-15 · Exercise / conversion · Acquired 36,000 · Balance 262,064 |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.01 · Expires 2030-03-10 | Direct | 150,120 |
Reported balance
After 2026-09-15 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-09-15 · Exercise / conversion · Disposed 36,000 · Balance 150,120 F1: The shares underlying this option are fully vested and exercisable as of the date hereof. |
Filing footnotes · ownership attribution and instrument terms
F1: The shares underlying this option are fully vested and exercisable as of the date hereof.
Gossamer Bio, Inc.
Report date September 23, 2026 · Filed September 25, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $10.99 · Expires 2036-09-22 | Direct | 10,000 |
Reported balance
After 2026-09-23 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2026-09-23 · Grant · Acquired 10,000 · Balance 10,000 F1: The entire number of shares subject to this option becomes fully vested and exercisable on the first anniversary of the grant date, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date. |
Filing footnotes · ownership attribution and instrument terms
F1: The entire number of shares subject to this option becomes fully vested and exercisable on the first anniversary of the grant date, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date.
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 |
|---|---|---|---|---|---|---|
| September 23, 2026 Filed Sep 25, 2026 20:51 UTC | Gossamer Bio, Inc. GOSS · Entity 6928 | GrantStock Option (Right to Buy) · Derivative | 10,000 | $0.00 Strike: $10.99 | $0.00 |
DisclosureSEC source: 0001628280-26-063606 · wk-form4_1790369479.xml · derivative · entry 1 Quisel John D · CIK 0001586788 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,000 Underlying: Common Stock · 10,000 shares Expires 2036-09-22 F1 · derivative.exercise_date: The entire number of shares subject to this option becomes fully vested and exercisable on the first anniversary of the grant date, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date. Read SEC document |
| September 15, 2026 Filed Sep 16, 2026 22:44 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 36,000 | $0.00 Strike: $1.01 | $0.00 |
DisclosureSEC source: 0001193125-26-393353 · ownership.xml · derivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 150,120 Underlying: Common Stock · 36,000 shares Expires 2030-03-10 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_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| September 15, 2026 Filed Sep 16, 2026 22:44 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 36,000 | $1.01 | $36,360.00 |
DisclosureSEC source: 0001193125-26-393353 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 262,064 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. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 22:56 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 33,000 | $0.00 Strike: $13.50 | $0.00 |
DisclosureSEC source: 0001193125-26-355841 · ownership.xml · derivative · entry 5 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 91,586 Underlying: Common Stock · 33,000 shares Expires 2032-12-28 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F5 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments following December 29, 2022, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 22:56 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 11,888 | $79.84 | $949,161.70 |
DisclosureSEC source: 0001193125-26-355841 · ownership.xml · nonDerivative · entry 4 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 226,064 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.53 to $80.02, inclusive. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 22:56 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 12,712 | $79.20 | $1,006,729.38 |
DisclosureSEC source: 0001193125-26-355841 · ownership.xml · nonDerivative · entry 3 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 237,952 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.53 to $79.52, inclusive. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 22:56 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 8,400 | $78.11 | $656,091.24 |
DisclosureSEC source: 0001193125-26-355841 · ownership.xml · nonDerivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 250,664 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.50 to $78.49, inclusive. The Reporting Person undertakes 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 sold at each separate price within the ranges set forth in footnotes (2), (3) and (4) to this Form 4. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 22:56 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 33,000 | $13.50 | $445,500.00 |
DisclosureSEC source: 0001193125-26-355841 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 259,064 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 7,416 | $0.00 Strike: $13.50 | $0.00 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · derivative · entry 7 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 124,586 Underlying: Common Stock · 7,416 shares Expires 2032-12-28 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F6 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments following December 29, 2022, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 25,584 | $0.00 Strike: $9.86 | $0.00 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · derivative · entry 6 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,791 Underlying: Common Stock · 25,584 shares Expires 2031-09-13 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F5 · derivative.exercise_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 6,400 | $76.05 | $486,732.80 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · nonDerivative · entry 5 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 226,064 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.83 to $76.29, inclusive. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 16,896 | $74.95 | $1,266,302.82 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · nonDerivative · entry 4 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 232,464 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.62 to $75.50, inclusive. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 9,704 | $74.27 | $720,744.22 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · nonDerivative · entry 3 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 249,360 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.62 to $74.60, inclusive. The Reporting Person undertakes 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 sold at each separate price within the ranges set forth in footnotes (2), (3) and (4) to this Form 4. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 7,416 | $13.50 | $100,116.00 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · nonDerivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 259,064 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. Read SEC document |
| July 13, 2026 Filed Jul 14, 2026 22:32 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 25,584 | $9.86 | $252,258.24 |
DisclosureSEC source: 0001193125-26-303535 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 251,648 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. Read SEC document |
| June 18, 2026 Filed Jun 23, 2026 21:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 34,000 | $0.00 Strike: $9.86 | $0.00 |
DisclosureSEC source: 0001193125-26-279779 · ownership.xml · derivative · entry 5 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 41,375 Underlying: Common Stock · 34,000 shares Expires 2031-09-13 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F5 · derivative.exercise_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| June 18, 2026 Filed Jun 23, 2026 21:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 1,551 | $71.61 | $111,071.14 |
DisclosureSEC source: 0001193125-26-279779 · ownership.xml · nonDerivative · entry 4 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 226,064 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.36 to $71.85, inclusive. Read SEC document |
| June 18, 2026 Filed Jun 23, 2026 21:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 9,522 | $70.70 | $673,205.40 |
DisclosureSEC source: 0001193125-26-279779 · ownership.xml · nonDerivative · entry 3 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 227,615 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $70.36 to $71.35, inclusive. Read SEC document |
| June 18, 2026 Filed Jun 23, 2026 21:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 22,927 | $69.92 | $1,603,019.16 |
DisclosureSEC source: 0001193125-26-279779 · ownership.xml · nonDerivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 237,137 F1 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.35 to $70.33, inclusive. The Reporting Person undertakes 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 sold at each separate price within the ranges set forth in footnotes (2), (3) and (4) to this Form 4. Read SEC document |
| June 18, 2026 Filed Jun 23, 2026 21:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 34,000 | $9.86 | $335,240.00 |
DisclosureSEC source: 0001193125-26-279779 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 260,064 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 · kind: These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2026. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:45 UTC | Gossamer Bio, Inc. GOSS · Entity 6928 | GrantStock Option (Right to Buy) · Derivative | 115,000 | $0.00 Strike: $0.18 | $0.00 |
DisclosureSEC source: 0001728117-26-000047 · wk-form4_1780695943.xml · derivative · entry 1 Quisel John D · CIK 0001586788 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 115,000 Underlying: Common Stock · 115,000 shares Expires 2036-06-03 F1 · shares: Award made pursuant to Non-Employee Director Compensation Program. F2 · derivative.exercise_date: The entire number of shares subject to this option becomes fully vested and exercisable on the first to occur of (a) the first anniversary of the grant date or (b) the next occurring annual meeting of the Issuer's stockholders, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date. Read SEC document |
| February 17, 2026 Filed Feb 18, 2026 02:03 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 13,264 | $62.86 | $833,775.04 |
DisclosureSEC source: 0001193125-26-055623 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 226,064 F1 · kind: This transaction represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of certain restricted stock units previously reported in Table I. This sale is a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 00:12 UTC | Disc Medicine, Inc. IRON · Entity 2273 | GrantStock Option (Right to Buy) · Derivative | 82,800 | $0.00 Strike: $74.75 | $0.00 |
DisclosureSEC source: 0001193125-26-047146 · ownership.xml · derivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 82,800 Underlying: Common Stock · 82,800 shares Expires 2036-02-09 F2 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments commencing on March 10, 2026, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 00:12 UTC | Disc Medicine, Inc. IRON · Entity 2273 | GrantCommon Stock | 55,200 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-047146 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 239,328 F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Common Stock. The RSUs shall vest annually in four 25% installments commencing on February 15, 2027, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| December 19, 2025 Filed Dec 19, 2025 23:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 12,300 | $0.00 Strike: $1.01 | $0.00 |
DisclosureSEC source: 0001193125-25-327173 · ownership.xml · derivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 186,120 Underlying: Common Stock · 12,300 shares Expires 2030-03-10 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_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| December 19, 2025 Filed Dec 19, 2025 23:16 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 12,300 | $1.01 | $12,423.00 |
DisclosureSEC source: 0001193125-25-327173 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 184,128 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. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 22:49 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 40,000 | $0.00 Strike: $9.86 | $0.00 |
DisclosureSEC source: 0001193125-25-319503 · ownership.xml · derivative · entry 6 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,375 Underlying: Common Stock · 40,000 shares Expires 2031-09-13 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F6 · derivative.exercise_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 22:49 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 16,888 | $93.65 | $1,581,549.38 |
DisclosureSEC source: 0001193125-25-319503 · ownership.xml · nonDerivative · entry 5 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 171,828 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.46 to $94.24, inclusive. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 22:49 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 16,356 | $92.96 | $1,520,398.15 |
DisclosureSEC source: 0001193125-25-319503 · ownership.xml · nonDerivative · entry 4 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 188,716 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.46 to $93.44, inclusive. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 22:49 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 4,337 | $92.21 | $399,919.97 |
DisclosureSEC source: 0001193125-25-319503 · ownership.xml · nonDerivative · entry 3 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 205,072 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.46 to $92.43, inclusive. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 22:49 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 2,419 | $90.97 | $220,063.69 |
DisclosureSEC source: 0001193125-25-319503 · ownership.xml · nonDerivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 209,409 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.40 to $91.37, inclusive. The Reporting Person undertakes 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 sold at each separate price within the ranges set forth in footnotes (2) through (5) to this Form 4. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 22:49 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 40,000 | $9.86 | $394,400.00 |
DisclosureSEC source: 0001193125-25-319503 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 211,828 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. Read SEC document |
| September 09, 2025 Filed Sep 11, 2025 22:00 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 10,000 | $0.00 Strike: $1.01 | $0.00 |
DisclosureSEC source: 0001586788-25-000004 · ownership.xml · derivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 198,420 Underlying: Common Stock · 10,000 shares Expires 2030-03-10 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_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| September 09, 2025 Filed Sep 11, 2025 22:00 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 10,000 | $1.01 | $10,100.00 |
DisclosureSEC source: 0001586788-25-000004 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 171,828 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. Read SEC document |
| July 09, 2025 Filed Jul 11, 2025 20:48 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 34,800 | $0.00 Strike: $9.86 | $0.00 |
DisclosureSEC source: 0000950170-25-095338 · ownership.xml · derivative · entry 4 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 115,375 Underlying: Common Stock · 34,800 shares Expires 2031-09-13 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F4 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments following September 1, 2021, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| July 09, 2025 Filed Jul 11, 2025 20:48 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 3,593 | $56.20 | $201,924.80 |
DisclosureSEC source: 0000950170-25-095338 · ownership.xml · nonDerivative · entry 3 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 161,828 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.00 to $56.33, inclusive. Read SEC document |
| July 09, 2025 Filed Jul 11, 2025 20:48 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 31,207 | $55.23 | $1,723,600.06 |
DisclosureSEC source: 0000950170-25-095338 · ownership.xml · nonDerivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 165,421 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.00 to $55.99, inclusive. The Reporting Person undertakes 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 sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4. Read SEC document |
| July 09, 2025 Filed Jul 11, 2025 20:48 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 34,800 | $9.86 | $343,128.00 |
DisclosureSEC source: 0000950170-25-095338 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 196,628 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. Read SEC document |
| July 03, 2025 Filed Jul 9, 2025 00:19 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 5,200 | $0.00 Strike: $9.86 | $0.00 |
DisclosureSEC source: 0000950170-25-094695 · ownership.xml · derivative · entry 3 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 150,175 Underlying: Common Stock · 5,200 shares Expires 2031-09-13 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F3 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments following September 1, 2021, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| July 03, 2025 Filed Jul 9, 2025 00:19 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 5,200 | $55.09 | $286,454.48 |
DisclosureSEC source: 0000950170-25-094695 · ownership.xml · nonDerivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 161,828 F1 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.00 to $55.26, inclusive. The Reporting Person undertakes 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 sold at each separate price within the range set forth in this footnote (2) to this Form 4. Read SEC document |
| July 03, 2025 Filed Jul 9, 2025 00:19 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 5,200 | $9.86 | $51,272.00 |
DisclosureSEC source: 0000950170-25-094695 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 167,028 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025. Read SEC document |
| June 25, 2025 Filed Jun 26, 2025 20:37 UTC | Gossamer Bio, Inc. GOSS · Entity 6928 | GrantStock Option (Right to Buy) · Derivative | 115,000 | $0.00 Strike: $1.36 | $0.00 |
DisclosureSEC source: 0001728117-25-000055 · wk-form4_1750970243.xml · derivative · entry 1 Quisel John D · CIK 0001586788 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 115,000 Underlying: Common Stock · 115,000 shares Expires 2035-06-24 F1 · shares: Award made pursuant to Non-Employee Director Compensation Program. F2 · derivative.exercise_date: The entire number of shares subject to this option becomes fully vested and exercisable on the first to occur of (a) the first anniversary of the grant date or (b) the next occurring annual meeting of the Issuer's stockholders, subject to the Reporting Person's continued service on the board of directors of the Issuer through such vesting date. Read SEC document |
| April 07, 2025 Filed Apr 9, 2025 00:22 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 7,000 | $0.00 Strike: $1.01 | $0.00 |
DisclosureSEC source: 0000950170-25-052289 · ownership.xml · derivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 208,420 Underlying: Common Stock · 7,000 shares Expires 2030-03-10 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_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| April 07, 2025 Filed Apr 9, 2025 00:22 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 7,000 | $1.01 | $7,070.00 |
DisclosureSEC source: 0000950170-25-052289 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 161,828 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. Read SEC document |
| February 18, 2025 Filed Feb 21, 2025 00:27 UTC | Disc Medicine, Inc. IRON · Entity 2273 | SaleCommon Stock | 5,574 | $54.58 | $304,228.92 |
DisclosureSEC source: 0000950170-25-024471 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 154,828 F1 · kind: This transaction represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of certain restricted stock units granted on January 10, 2024 and previously reported in Table I. This sale is a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. Read SEC document |
| February 10, 2025 Filed Feb 12, 2025 23:35 UTC | Disc Medicine, Inc. IRON · Entity 2273 | GrantStock Option (Right to Buy) · Derivative | 117,505 | $0.00 Strike: $54.71 | $0.00 |
DisclosureSEC source: 0000950170-25-019089 · ownership.xml · derivative · entry 2 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 117,505 Underlying: Common Stock · 117,505 shares Expires 2035-02-09 F2 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments commencing on March 10, 2025, subject to the Reporting Person's continuted service on each such vesting date. Read SEC document |
| February 10, 2025 Filed Feb 12, 2025 23:35 UTC | Disc Medicine, Inc. IRON · Entity 2273 | GrantCommon Stock | 78,337 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-25-019089 · ownership.xml · nonDerivative · entry 1 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 160,402 F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Common Stock. The RSUs shall vest annually in four 25% installments commencing on February 15, 2026, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| December 31, 2024 Filed Jan 3, 2025 00:13 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 10,000 | $0.00 Strike: $1.01 | $0.00 |
DisclosureSEC source: 0000950170-25-000617 · ownership.xml · derivative · entry 6 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 215,420 Underlying: Common Stock · 10,000 shares Expires 2030-03-10 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. F5 · derivative.exercise_date: The shares underlying this option are fully vested and exercisable as of the date hereof. Read SEC document |
| December 31, 2024 Filed Jan 3, 2025 00:13 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionCommon Stock | 10,000 | $1.01 | $10,100.00 |
DisclosureSEC source: 0000950170-25-000617 · ownership.xml · nonDerivative · entry 4 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 82,065 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. Read SEC document |
| December 30, 2024 Filed Jan 3, 2025 00:13 UTC | Disc Medicine, Inc. IRON · Entity 2273 | Exercise / conversionStock Option (Right to Buy) · Derivative | 13,012 | $0.00 Strike: $9.86 | $0.00 |
DisclosureSEC source: 0000950170-25-000617 · ownership.xml · derivative · entry 5 Quisel John D · CIK 0001586788 · Director · Chief Executive Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 155,375 Underlying: Common Stock · 13,012 shares Expires 2031-09-13 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 · kind: The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on July 2, 2024. F4 · derivative.exercise_date: The shares underlying this option vest in 48 equal monthly installments following September 1, 2021, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.