Aura Biosciences, Inc.
AURA- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001501796
No open-market purchases or sales by Aura Biosciences, Inc. insiders were filed in the last 90 days; 146 institutions reported holding it in 13F filings for Q2 2026, worth $677.2M in total; no superinvestor holds it.
Holders of 5% or more of AURA
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Aura Biosciences, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| TCG Crossover GP II, LLC | 13G | 9.90%9.53M shares | New | May 12, 20261 filing | May 12, 2026 | SEC |
| Adage Capital Management, L.P. | 13G/A | 8.44%9.10M shares | – | Nov 12, 20242 filings | Aug 12, 2026 | SEC |
| Suvretta Capital Management, LLC | 13G/A | 7.60%4.70M shares | +1.50 ppfrom 6.10% | Apr 11, 20252 filings | Aug 13, 2025 | SEC |
| Frazier Life Sciences Public Fund, L.P. | 13G/A | 5.60%5.81M shares | −0.70 ppfrom 6.30% | May 23, 20254 filings | Aug 14, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
46 Schedule 13D and 13G filings on Aura Biosciences, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20264:29 PM ET | Frazier Life Sciences Public Fund, L.P.and 13 others | 13G/A | 5.60%5.81M shares | −0.70 ppfrom 6.30% | Jun 30, 2026 | SEC |
| Aug 14, 20266:05 AM ET | Long Focus Capital Management, LLCand 1 other | 13G | 4.90%5.12M shares | −1.70 ppfrom 6.60%Below 5% | Jun 30, 2026 | SEC |
| Aug 12, 202612:02 PM ET | Adage Capital Management, L.P.and 2 others | 13G/A | 8.44%9.10M shares | – | Jun 30, 2026 | SEC |
| Jul 27, 20264:25 PM ET | BlackRock, Inc. | 13G/A | 4.40%4.58M shares | −1.00 ppfrom 5.40%Below 5% | Jun 30, 2026 | SEC |
| May 12, 20266:06 PM ET | TCG Crossover GP II, LLCand 4 others | 13G | 9.90%9.53M shares | New | May 5, 2026 | SEC |
| May 11, 20264:15 PM ET | Matrix Capital Management Company, LPand 1 other | 13D/A | 0.00%0 shares | −11.17 ppfrom 11.17%Below 5% | May 7, 2026 | SEC |
| Feb 17, 20268:48 PM ET | Advent Life Sciences LLPand 5 others | 13G/A | 3.33%2.07M shares | –Below 5% | Feb 13, 2026 | SEC |
| Feb 13, 20265:34 PM ET | Frazier Life Sciences Public Fund, L.P.and 13 others | 13G/A | 6.30%4.03M shares | +1.30 ppfrom 5.00% | Dec 31, 2025 | SEC |
| Oct 17, 20256:05 PM ET | BlackRock, Inc. | 13G | 5.40%3.34M shares | +0.50 ppfrom 4.90% | Sep 30, 2025 | SEC |
| Aug 14, 20251:44 PM ET | Frazier Life Sciences Public Fund, L.P.and 19 others | 13G/A | 5.00%3.11M shares | −4.90 ppfrom 9.90% | Jun 30, 2025 | SEC |
| Aug 13, 20258:01 PM ET | Suvretta Capital Management, LLCand 2 others | 13G/A | 7.60%4.70M shares | +1.50 ppfrom 6.10% | Jun 30, 2025 | SEC |
| Jul 16, 20257:02 PM ET | BlackRock, Inc. | 13G/A | 4.90%3.04M shares | –Below 5% | Jun 30, 2025 | SEC |
| May 23, 20254:07 PM ET | Frazier Life Sciences Public Fund, L.P.and 19 others | 13G | 9.90%6.32M shares | New | May 16, 2025 | SEC |
| May 19, 20254:35 PM ET | Matrix Capital Management Company, LPand 1 other | 13D/A | 11.17%6.92M shares | – | May 16, 2025 | SEC |
| May 15, 202511:26 AM ET | Long Focus Capital Management, LLCand 1 other | 13G/A | 6.60%3.32M shares | +1.60 ppfrom 5.00% | Mar 31, 2025 | SEC |
| May 14, 20253:28 PM ET | Eventide Asset Management, LLCand 2 others | 13G/A | 0.00%0 shares | 0.00 ppfrom 0.00%Below 5% | Mar 31, 2025 | SEC |
| May 13, 20255:28 PM ET | Eventide Asset Management, LLCand 2 others | 13G/A | 0.00%0 shares | −8.17 ppfrom 8.17%Below 5% | Mar 31, 2025 | SEC |
| Apr 11, 20255:57 PM ET | Suvretta Capital Management, LLCand 2 others | 13G | 6.10%3.06M shares | New | Apr 4, 2025 | SEC |
| Feb 14, 202511:56 AM ET | Eventide Asset Management, LLCand 2 others | 13G/A | 8.17%4.08M shares | – | Dec 31, 2024 | SEC |
| Jan 3, 20257:20 PM ET | Long Focus Capital Management, LLCand 4 others | 13G/A | 5.00%2.51M shares | −0.70 ppfrom 5.70% | Dec 24, 2024 | SEC |
| Jan 3, 20255:03 PM ET | Long Focus Capital Management, LLCand 4 others | 13G | 5.70%2.51M shares | New | Dec 24, 2024 | SEC |
| Nov 14, 2024 | Lundbeckfond Invest A/S | 13G/AOld format | – | – | – | SEC |
| Nov 14, 2024 | Citadel Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Nov 12, 2024 | Adage Capital Management, L.P. | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2024 | BlackRock, Inc. | 13GOld format | – | – | – | SEC |
| Oct 22, 2024 | BlackRock, Inc. | 13GOld format | – | New | – | SEC |
| Feb 14, 2024 | Citadel Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 7, 2024 | Adage Capital Partners GP, L.L.C. | 13G/AOld format | – | – | – | SEC |
| Dec 11, 2023 | Eventide Asset Management, LLC | 13G/AOld format | – | – | – | SEC |
| Nov 9, 2023 | Matrix Capital Management Company, LP | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Eventide Asset Management, LLC | 13GOld format | – | New | – | SEC |
| Feb 14, 2023 | Citadel Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Arix Bioscience plc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Adage Capital Partners GP, L.L.C. | 13G/AOld format | – | – | – | SEC |
| Jan 20, 2023 | Chiesi Ventures, Inc. | 13G/AOld format | – | – | – | SEC |
| Dec 15, 2022 | Adage Capital Partners GP, L.L.C. | 13GOld format | – | New | – | SEC |
| Dec 7, 2022 | Matrix Capital Management Company, LP | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Citadel Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Advent Life Sciences LLP | 13GOld format | – | New | – | SEC |
| Feb 10, 2022 | Arix Bioscience plc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 2022 | Lundbeckfond Invest A/S | 13GOld format | – | New | – | SEC |
| Nov 12, 2021 | Chiesi Ventures, Inc. | 13GOld format | – | New | – | SEC |
| Nov 12, 2021 | Citadel Advisors LLC | 13GOld format | – | New | – | SEC |
| Nov 10, 2021 | Medicxi Growth I LP | 13DOld format | – | New | – | SEC |
| Nov 10, 2021 | Arix Bioscience plc | 13GOld format | – | New | – | SEC |
| Nov 4, 2021 | Matrix Capital Management Company, LP | 13DOld format | – | New | – | SEC |
Form 144: proposed insider sales
9 notices from officers, directors and other affiliates planning to sell Aura Biosciences, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Mar 4, 20245:35 PM ET | Cadmus C Rich & Shantel C RichOfficer | 20.0K | $184.8K | Mar 4, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 15, 20234:30 PM ET | Cadmus C Rich &SHANTEL C Rich JT TenOfficer | 90.0K | $796.8K | Dec 15, 202310b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 6, 20234:22 PM ET | Elisabet De Los PinosOfficer | 30.1K | $361.2K | Nov 6, 202310b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 6, 20234:20 PM ET | Julie FederOfficer | 17.5K | $209.7K | Nov 6, 202310b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 3, 20234:16 PM ET | Elisabet de los PinosOfficer · Director | 9.59K | $65.5K | Oct 30, 202310b5-1 | Morgan Stanley Smith Barney LLC Drive | SEC |
| Nov 3, 20234:15 PM ET | Cadmus C. RichFormer officer | 1.71K | $11.6K | Oct 30, 202310b5-1 | Morgan Stanley Smith Barney LLC Drive | SEC |
| Nov 3, 20234:15 PM ET | Julie B. FederOfficer | 3.38K | $23.1K | Oct 30, 202310b5-1 | Morgan Stanley Smith Barney LLC Drive | SEC |
| Jun 7, 20235:46 PM ET | De Rosch MarkOfficer | 77.2K | $1.00M | Jun 7, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| Jun 2, 20237:11 PM ET | De Rosch MarkOfficer | 65.0K | $786.5K | Jun 2, 2023 | ETRADE FINANCIAL CORPORATION | SEC |