In the last 12 months, insiders at Metsera, Inc. ($MTSR) filed 117 transactions with the SEC: 5 open-market purchases totaling $94,219,956 and 2 sales totaling $21,465. Net insider sentiment: net buying.
Metsera, Inc. operates in the Pharmaceutical preparations industry (Life sciences sector).
Most Active Insiders
- ARCH Venture Partners XII, LLC (Not found) — 9 transactions totaling $39,999,996
- Burow Kristina (Not found) — 18 transactions totaling $39,999,996
- BERNS PAUL L (Not found) — 12 transactions totaling $14,219,964
- FMR LLC (Not found) — 25 transactions totaling $21,465
- Stonehouse Jon P (Not found) — 4 transactions totaling $20
View all SEC Filings for Metsera, Inc. (MTSR).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| Nov. 13, 2025 | FMR LLC | Not found | J | Common Stock | 2230450 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 2.12% |
| Nov. 13, 2025 | FMR LLC | Not found | J | Common Stock | 3010 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.00% |
| Nov. 13, 2025 | ARCH Venture Partners XII, LLC | Director | D | Common Stock | 18503128 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 17.56% |
| Nov. 13, 2025 | ARCH Venture Partners XII, LLC | Director | D | Common Stock | 8313680 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 7.89% |
| Nov. 13, 2025 | Hubbard Brian | CHIEF SCIENTIFIC OFFICER | D | Stock Option (right to buy) | 120000 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.11% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Stock Option (right to buy) | 16125 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | Marso Steven | CHIEF MEDICAL OFFICER | D | Common Stock | 17000 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | Marso Steven | CHIEF MEDICAL OFFICER | A | Restricted Stock Unit | 17000 | $0.00 | 17,000.0000 | 105,376,189 | 9999.99% | 0.02% |
| Nov. 13, 2025 | Marso Steven | CHIEF MEDICAL OFFICER | D | Stock Option (right to buy) | 120000 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.11% |
| Nov. 13, 2025 | Marso Steven | CHIEF MEDICAL OFFICER | D | Stock Option (right to buy) | 829885 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.79% |
| Nov. 13, 2025 | Marso Steven | CHIEF MEDICAL OFFICER | D | Stock Option (right to buy) | 21279 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | D | Common Stock | 4031 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.00% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | D | Common Stock | 7523682 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 7.14% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | D | Common Stock | 8313680 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 7.89% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | D | Common Stock | 957559 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.91% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | A | Restricted Stock Unit | 4031 | $0.00 | 4,031.0000 | 105,376,189 | 9999.99% | 0.00% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | D | Stock Option (right to buy) | 24188 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | BERNS PAUL L | Not found | D | Stock Option (right to buy) | 223430 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.21% |
| Nov. 13, 2025 | Lang Matthew | CHIEF LEGAL OFFICER | D | Common Stock | 12500 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.01% |
| Nov. 13, 2025 | Lang Matthew | CHIEF LEGAL OFFICER | A | Restricted Stock Unit | 12500 | $0.00 | 12,500.0000 | 105,376,189 | 9999.99% | 0.01% |
| Nov. 13, 2025 | Lang Matthew | CHIEF LEGAL OFFICER | D | Stock Option (right to buy) | 46875 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.04% |
| Nov. 13, 2025 | Lang Matthew | CHIEF LEGAL OFFICER | D | Stock Option (right to buy) | 325000 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.31% |
| Nov. 13, 2025 | Population Health Partners GP, LLC | Not found | D | Common Stock | 127675 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.12% |
| Nov. 13, 2025 | Population Health Partners GP, LLC | Not found | D | Common Stock | 12639787 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 12.00% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Common Stock | 2688 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.00% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Common Stock | 17070904 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 16.20% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Common Stock | 18503128 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 17.56% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Common Stock | 7523682 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 7.14% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Common Stock | 8313680 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 7.89% |
| Nov. 13, 2025 | Burow Kristina | Not found | A | Restricted Stock Unit | 2688 | $0.00 | 2,688.0000 | 105,376,189 | 9999.99% | 0.00% |
| Nov. 13, 2025 | Burow Kristina | Not found | D | Stock Option (right to buy) | 148953 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.14% |
| Nov. 11, 2025 | Validae Health, L.P. | Not found | J | Common Stock | 12767462 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 12.12% |
| Nov. 13, 2025 | Pinto Joshua | Not found | D | Common Stock | 2688 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.00% |
| Nov. 13, 2025 | Pinto Joshua | Not found | A | Restricted Stock Unit | 2688 | $0.00 | 2,688.0000 | 105,376,189 | 9999.99% | 0.00% |
| Nov. 13, 2025 | Pinto Joshua | Not found | D | Stock Option (right to buy) | 16125 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | Pinto Joshua | Not found | D | Stock Option (right to buy) | 148953 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.14% |
| Nov. 13, 2025 | Stonehouse Jon P | Not found | D | Common Stock | 2688 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.00% |
| Nov. 13, 2025 | Stonehouse Jon P | Not found | A | Restricted Stock Unit | 2688 | $0.00 | 2,688.0000 | 105,376,189 | 9999.99% | 0.00% |
| Nov. 13, 2025 | Stonehouse Jon P | Not found | D | Stock Option (right to buy) | 47730 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.05% |
| Nov. 13, 2025 | Hubbard Brian | CHIEF SCIENTIFIC OFFICER | D | Common Stock | 17000 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | Hubbard Brian | CHIEF SCIENTIFIC OFFICER | A | Restricted Stock Unit | 17000 | $0.00 | 17,000.0000 | 105,376,189 | 9999.99% | 0.02% |
| Nov. 13, 2025 | Hubbard Brian | CHIEF SCIENTIFIC OFFICER | D | Stock Option (right to buy) | 319186 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.30% |
| Nov. 13, 2025 | Hubbard Brian | CHIEF SCIENTIFIC OFFICER | D | Stock Option (right to buy) | 106395 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.10% |
| Nov. 13, 2025 | Visioli Christopher | CHIEF FINANCIAL OFFICER | D | Common Stock | 21250 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | Visioli Christopher | CHIEF FINANCIAL OFFICER | A | Restricted Stock Unit | 21250 | $0.00 | 21,250.0000 | 105,376,189 | 9999.99% | 0.02% |
| Nov. 13, 2025 | Visioli Christopher | CHIEF FINANCIAL OFFICER | D | Stock Option (right to buy) | 150000 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.14% |
| Nov. 13, 2025 | Visioli Christopher | CHIEF FINANCIAL OFFICER | D | Stock Option (right to buy) | 255349 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.24% |
| Nov. 13, 2025 | Visioli Christopher | CHIEF FINANCIAL OFFICER | D | Stock Option (right to buy) | 340465 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.32% |
| Nov. 13, 2025 | MEANWELL CLIVE | EXECUTIVE CHAIRMAN | D | Common Stock | 5375 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.01% |
| Nov. 13, 2025 | MEANWELL CLIVE | EXECUTIVE CHAIRMAN | D | Common Stock | 12767462 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 12.12% |
| Nov. 13, 2025 | MEANWELL CLIVE | EXECUTIVE CHAIRMAN | A | Restricted Stock Unit | 5375 | $0.00 | 5,375.0000 | 105,376,189 | 9999.99% | 0.01% |
| Nov. 13, 2025 | MEANWELL CLIVE | EXECUTIVE CHAIRMAN | D | Stock Option (right to buy) | 32250 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.03% |
| Nov. 13, 2025 | MEANWELL CLIVE | EXECUTIVE CHAIRMAN | D | Stock Option (right to buy) | 297907 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.28% |
| Nov. 13, 2025 | Bernard Christopher Whitten | See Remarks | D | Common Stock | 21250 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.02% |
| Nov. 13, 2025 | Bernard Christopher Whitten | See Remarks | D | Common Stock | 12767462 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 12.12% |
| Nov. 13, 2025 | Bernard Christopher Whitten | See Remarks | A | Restricted Stock Unit | 21250 | $0.00 | 21,250.0000 | 105,376,189 | 9999.99% | 0.02% |
| Nov. 13, 2025 | Bernard Christopher Whitten | See Remarks | D | Stock Option (right to buy) | 348750 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 0.33% |
| Nov. 13, 2025 | Bernard Christopher Whitten | See Remarks | D | Stock Option (right to buy) | 1702328 | $0.00 | 0.0000 | 105,376,189 | 100.00% | 1.62% |
| Nov. 10, 2025 | FMR LLC | Not found | G | Common Stock | 860722 | $0.00 | 2,233,460.0000 | 105,376,189 | 27.82% | 0.82% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 2115 | $0.00 | 3,094,182.0000 | 105,050,219 | 0.07% | 0.00% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 47843 | $0.00 | 3,094,182.0000 | 105,050,219 | 1.52% | 0.05% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 47843 | $0.00 | 3,142,025.0000 | 105,050,219 | 1.55% | 0.05% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 3189540 | $0.00 | 3,094,182.0000 | 105,050,219 | 50.76% | 3.04% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 2356274 | $0.00 | 5,450,456.0000 | 105,050,219 | 76.15% | 2.24% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 2617340 | $0.00 | 3,094,182.0000 | 105,050,219 | 548.89% | 2.49% |
| Nov. 3, 2025 | FMR LLC | Not found | J | Common Stock | 2356081 | $0.00 | 3,094,182.0000 | 105,050,219 | 43.23% | 2.24% |
| Nov. 3, 2025 | FMR LLC | Not found | S | Common Stock | 193 | $61.23 | 5,450,263.0000 | 105,050,219 | 0.00% | 0.00% |
| Oct. 6, 2025 | FMR LLC | Not found | G | Common Stock | 633715 | $0.00 | 3,664,267.0000 | 105,050,219 | 14.74% | 0.60% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 1107547 | $0.00 | 1,107,547.0000 | 105,050,219 | 9999.99% | 1.05% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 20250 | $0.00 | 4,323,798.0000 | 105,050,219 | 0.47% | 0.02% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 1134258 | $0.00 | 4,323,798.0000 | 105,050,219 | 35.56% | 1.08% |
| Sept. 2, 2025 | FMR LLC | Not found | S | Common Stock | 268 | $36.00 | 4,323,798.0000 | 105,050,219 | 0.01% | 0.00% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 997044 | $0.00 | 4,324,066.0000 | 105,050,219 | 18.74% | 0.95% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 1350000 | $0.00 | 4,323,798.0000 | 105,050,219 | 23.79% | 1.29% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 20250 | $0.00 | 4,344,048.0000 | 105,050,219 | 0.47% | 0.02% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Shares | 895 | $0.00 | 895.0000 | 105,050,219 | 9999.99% | 0.00% |
| Sept. 2, 2025 | FMR LLC | Not found | J | Common Stock | 997312 | $0.00 | 5,321,110.0000 | 105,050,219 | 23.07% | 0.95% |
| May 20, 2025 | Lang Matthew | Chief Legal Officer | A | Stock Option (Right to Buy) | 46875 | $0.00 | 46,875.0000 | 105,050,219 | 9999.99% | 0.04% |
| May 20, 2025 | Pinto Joshua | Not found | A | Stock Option (Right to Buy) | 16125 | $0.00 | 165,078.0000 | 105,050,219 | 10.83% | 0.02% |
| May 20, 2025 | Visioli Christopher | Chief Financial Officer | A | Stock Option (Right to Buy) | 150000 | $0.00 | 150,000.0000 | 105,050,219 | 9999.99% | 0.14% |
| May 20, 2025 | Bernard Christopher Whitten | President and CEO | A | Stock Option (Right to Buy) | 348750 | $0.00 | 348,750.0000 | 105,050,219 | 9999.99% | 0.33% |
| May 20, 2025 | BERNS PAUL L | Not found | A | Stock Option (Right to Buy) | 24188 | $0.00 | 24,188.0000 | 105,050,219 | 9999.99% | 0.02% |
| May 20, 2025 | Hubbard Brian | Chief Scientific Officer | A | Stock Option (Right to Buy) | 120000 | $0.00 | 120,000.0000 | 105,050,219 | 9999.99% | 0.11% |
| May 20, 2025 | Marso Steven | Chief Medical Officer | A | Stock Option (Right to Buy) | 120000 | $0.00 | 120,000.0000 | 105,050,219 | 9999.99% | 0.11% |
| May 20, 2025 | Burow Kristina | Not found | A | Stock Option (Right to Buy) | 16125 | $0.00 | 16,125.0000 | 105,050,219 | 9999.99% | 0.02% |
| May 20, 2025 | MEANWELL CLIVE | Executive Chairman | A | Stock Option (Right to Buy) | 32250 | $0.00 | 32,250.0000 | 105,050,219 | 9999.99% | 0.03% |
| May 22, 2025 | Pinto Joshua | Not found | G | Stock Option (Right to Buy) | 148953 | $0.00 | 148,953.0000 | 105,050,219 | 9999.99% | 0.14% |
| May 22, 2025 | Pinto Joshua | Not found | G | Stock Option (Right to Buy) | 148953 | $0.00 | 148,953.0000 | 105,050,219 | 50.00% | 0.14% |
| April 28, 2025 | Stonehouse Jon P | Not found | A | Stock Option (Right to Buy) | 47730 | $19.81 | 47,730.0000 | 105,050,219 | 9999.99% | 0.05% |
| Feb. 3, 2025 | FMR LLC | Not found | C | Series A Preferred Stock | 3120934 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | FMR LLC | Not found | C | Series Seed Preferred Stock | 1418606 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | FMR LLC | Not found | C | Common Stock | 3120934 | $0.00 | 4,539,540.0000 | 0 | 220.00% | 0.00% |
| Feb. 3, 2025 | FMR LLC | Not found | C | Common Stock | 1418606 | $0.00 | 1,418,606.0000 | 0 | 9999.99% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Series A Convertible Preferred Stock | 15000000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Series B Convertible Preferred Stock | 2678571 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Series A Convertible Preferred Stock | 15000000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Series B Convertible Preferred Stock | 2678571 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Jan. 30, 2025 | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Common Stock | 1857699 | $0.00 | 1,857,699.0000 | 0 | 9999.99% | 0.00% |
| Jan. 30, 2025 | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series B Preferred Stock | 4365079 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Series B Convertible Preferred Stock | 2678571 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Series A Convertible Preferred Stock | 15000000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Series B Convertible Preferred Stock | 2678571 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Series A Convertible Preferred Stock | 15000000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Series Seed Preferred Stock | 19933333 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | P | Common Stock | 789998 | $18.00 | 8,313,680.0000 | 0 | 10.50% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Common Stock | 7523682 | $0.00 | 7,523,682.0000 | 0 | 9999.99% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | P | Common Stock | 1432224 | $18.00 | 18,503,128.0000 | 0 | 8.39% | 0.00% |
| Feb. 3, 2025 | Burow Kristina | Not found | C | Common Stock | 16006949 | $0.00 | 17,070,904.0000 | 0 | 1504.48% | 0.00% |
| Feb. 3, 2025 | BERNS PAUL L | Not found | C | Common Stock | 7523682 | $0.00 | 8,481,241.0000 | 0 | 785.71% | 0.00% |
| Feb. 3, 2025 | BERNS PAUL L | Not found | P | Common Stock | 789998 | $18.00 | 9,271,239.0000 | 0 | 9.31% | 0.00% |
| Feb. 3, 2025 | BERNS PAUL L | Not found | C | Series A Convertible Preferred Stock | 15000000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Common Stock | 16006949 | $0.00 | 17,070,904.0000 | 0 | 1504.48% | 0.00% |
| Feb. 3, 2025 | BERNS PAUL L | Not found | C | Series B Convertible Preferred Stock | 2678571 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Common Stock | 7523682 | $0.00 | 7,523,682.0000 | 0 | 9999.99% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | P | Common Stock | 1432224 | $18.00 | 18,503,128.0000 | 0 | 8.39% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | P | Common Stock | 789998 | $18.00 | 8,313,680.0000 | 0 | 10.50% | 0.00% |
| Feb. 3, 2025 | ARCH Venture Partners XII, LLC | Not found | C | Series Seed Preferred Stock | 19933333 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |