| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| GLAZER CAPITAL, LLC | 6.6% | +18% | $48,032,679 | +$7,898,535 | 3,776,154 | +20% | Glazer Capital, LLC | 31 Dec 2025 |
| Venrock Healthcare Capital Partners III, L.P. | 4.4% | $12,704,489 | 2,457,348 | Venrock Healthcare Capital Partners III, L.P. | 31 Dec 2024 | |||
| Fairmount Funds Management LLC | 4% | -59% | $17,304,917 | -$25,421,673 | 2,377,049 | -59% | Fairmount Funds Management LLC | 14 Oct 2025 |
| FMR LLC | 2.2% | -77% | $9,112,857 | -$28,407,637 | 1,251,766 | -76% | FMR LLC | 31 Oct 2025 |
| INTEGRATED CORE STRATEGIES (US) LLC | 0.4% | -96% | $1,616,895 | -$19,770,311 | 222,101 | -92% | Millennium Management LLC | 14 Oct 2025 |
As of 31 Dec 2025, 137 institutional investors reported holding 56,478,225 shares of Astria Therapeutics, Inc. - Common Stock, par value $0.001 per share (ATXS). This represents 99% of the company’s total 57,127,897 outstanding shares.
The largest institutional shareholders of Astria Therapeutics, Inc. - Common Stock, par value $0.001 per share (ATXS) together control 74% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 11% | 6,485,420 | 0% | 1.6% | $84,894,147 |
| BlackRock, Inc. | 6.7% | 3,832,755 | +9.9% | 0% | $50,170,764 |
| Glazer Capital, LLC | 6.6% | 3,776,154 | 1.3% | $49,430,000 | |
| Magnetar Financial LLC | 6% | 3,431,007 | 0.44% | $44,911,881 | |
| VANGUARD GROUP INC | 4.6% | 2,623,042 | -0.72% | 0% | $34,335,620 |
| UBS Group AG | 4.2% | 2,399,171 | +314% | 0.01% | $31,405,148 |
| DEUTSCHE BANK AG\ | 3.1% | 1,762,802 | +5188% | 0.01% | $23,075,078 |
| ALLIANCEBERNSTEIN L.P. | 3% | 1,732,464 | +2889% | 0.01% | $22,677,954 |
| Balyasny Asset Management L.P. | 2.9% | 1,636,921 | 0.04% | $21,427,296 | |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 1,073,766 | +12% | 0% | $14,059,434 |
| Nantahala Capital Management, LLC | 1.9% | 1,069,530 | 0% | 0.83% | $14,000,148 |
| Qube Research & Technologies Ltd | 1.9% | 1,057,230 | 0.02% | $13,839,141 | |
| KRYGER CAPITAL Ltd | 1.8% | 1,025,278 | 1% | $13,420,889 | |
| Man Group plc | 1.7% | 977,202 | 0.02% | $12,791,574 | |
| CITIGROUP INC | 1.6% | 927,342 | +2814% | 0.01% | $12,138,907 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.6% | 900,000 | +7.9% | 0.02% | $11,781,000 |
| STATE STREET CORP | 1.6% | 899,074 | +0.94% | 0% | $11,768,879 |
| Squarepoint Ops LLC | 1.5% | 882,792 | +5704% | 0.02% | $11,555,747 |
| TUDOR INVESTMENT CORP ET AL | 1.5% | 875,000 | 0.06% | $11,453,750 | |
| SOROS FUND MANAGEMENT LLC | 1.5% | 873,400 | 0.15% | $11,432,806 | |
| LMR Partners LLP | 1.5% | 840,000 | 0.11% | $10,995,600 | |
| First Trust Capital Management L.P. | 1.5% | 831,357 | 0.66% | $10,882,463 | |
| MORGAN STANLEY | 1.4% | 810,795 | -6.2% | 0% | $10,613,307 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1.3% | 741,684 | 0.02% | $9,708,644 | |
| GARDNER LEWIS ASSET MANAGEMENT L P | 1.3% | 739,565 | 2.5% | $9,680,906 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 56,478,225 | $737,599,232 | +$138,809,568 | $13.09 | 137 |
| 2025 Q3 | 56,024,844 | $407,841,094 | -$10,183,448 | $7.28 | 114 |
| 2025 Q2 | 57,553,753 | $309,894,193 | -$4,210,865 | $5.36 | 105 |
| 2025 Q1 | 58,322,222 | $311,449,455 | -$2,818,099 | $5.34 | 112 |
| 2024 Q4 | 58,541,619 | $523,363,001 | +$15,175,340 | $8.94 | 108 |
| 2024 Q3 | 56,513,523 | $622,063,168 | +$12,380,808 | $11.01 | 102 |
| 2024 Q2 | 55,579,204 | $505,773,414 | -$43,969,147 | $9.10 | 100 |
| 2024 Q1 | 57,634,977 | $810,618,371 | +$319,828,537 | $14.08 | 102 |
| 2023 Q4 | 36,626,752 | $281,291,782 | +$90,089,493 | $7.68 | 78 |
| 2023 Q3 | 22,981,516 | $171,440,766 | -$12,708,816 | $7.46 | 68 |
| 2023 Q2 | 24,666,745 | $205,474,768 | +$6,090,240 | $8.33 | 76 |
| 2023 Q1 | 23,423,158 | $311,606,739 | +$19,718,386 | $13.30 | 66 |
| 2022 Q4 | 21,794,554 | $324,518,327 | +$180,101,918 | $14.89 | 60 |
| 2022 Q3 | 9,828,525 | $88,847,076 | +$41,623,406 | $9.04 | 41 |
| 2022 Q2 | 5,732,278 | $17,195,000 | -$3,741,817 | $3.00 | 25 |
| 2022 Q1 | 6,210,303 | $41,669,000 | +$889,657 | $6.71 | 29 |
| 2021 Q4 | 6,093,269 | $32,840,000 | -$7,416,469 | $5.39 | 29 |
| 2021 Q3 | 7,212,783 | $63,765,000 | +$63,764,000 | $8.84 | 32 |