Protara Therapeutics, Inc.
TARA- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001359931
In the last 90 days, Protara Therapeutics, Inc. insiders filed 0 open-market purchases and 1 sale; 119 institutions reported holding it in 13F filings for Q2 2026, worth $176.0M in total; no superinvestor holds it.
Holders of 5% or more of TARA
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Protara Therapeutics, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Janus Henderson Group PLC | 13G/A | 8.40%4.70M shares | −1.20 ppfrom 9.60% | Feb 14, 20258 filings | Aug 13, 2026 | SEC |
| BlackRock, Inc. | 13G | 6.30%3.39M shares | +1.60 ppfrom 4.70% | Jul 17, 20253 filings | Apr 27, 2026 | SEC |
| Millennium Management LLC | 13G/A | 5.70%3.20M shares | +0.60 ppfrom 5.10% | Mar 2, 20262 filings | Jul 7, 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
34 Schedule 13D and 13G filings on Protara Therapeutics, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 13, 202612:47 PM ET | Janus Henderson Group PLC | 13G/A | 8.40%4.70M shares | −1.20 ppfrom 9.60% | Jun 30, 2026 | SEC |
| Jul 7, 20266:42 PM ET | Millennium Management LLCand 3 others | 13G/A | 5.70%3.20M shares | +0.60 ppfrom 5.10% | Jul 1, 2026 | SEC |
| May 15, 202612:39 PM ET | Janus Henderson Group PLC | 13G/A | 9.60%5.21M shares | −0.40 ppfrom 10.00% | Mar 31, 2026 | SEC |
| Apr 27, 20264:12 PM ET | BlackRock, Inc. | 13G | 6.30%3.39M shares | +1.60 ppfrom 4.70% | Mar 31, 2026 | SEC |
| Mar 2, 20264:19 PM ET | Millennium Management LLCand 2 others | 13G | 5.10%2.76M shares | New | Feb 25, 2026 | SEC |
| Feb 17, 20264:33 PM ET | Janus Henderson Group PLC | 13G/A | 10.00%5.14M shares | −1.00 ppfrom 11.00% | Dec 31, 2025 | SEC |
| Jan 21, 202612:30 PM ET | BlackRock, Inc. | 13G/A | 4.70%2.41M shares | −0.90 ppfrom 5.60%Below 5% | Dec 31, 2025 | SEC |
| Nov 14, 202511:58 AM ET | Janus Henderson Group PLCand 1 other | 13G/A | 11.00%4.23M shares | +0.40 ppfrom 10.60% | Sep 30, 2025 | SEC |
| Aug 14, 20256:03 PM ET | Ra Capital Management, L.P.and 3 others | 13G/A | 4.90%1.97M shares | −5.00 ppfrom 9.90%Below 5% | Jun 30, 2025 | SEC |
| Aug 14, 202511:15 AM ET | Janus Henderson Group PLCand 1 other | 13G/A | 10.60%4.10M shares | +0.10 ppfrom 10.50% | Jun 30, 2025 | SEC |
| Jul 17, 20257:54 PM ET | BlackRock, Inc. | 13G | 5.60%2.14M shares | New | Jun 30, 2025 | SEC |
| May 14, 202512:13 PM ET | Janus Henderson Group PLCand 1 other | 13G/A | 10.50%3.86M shares | +0.20 ppfrom 10.30% | Mar 31, 2025 | SEC |
| May 12, 20259:01 AM ET | Adage Capital Management, L.P.and 2 others | 13G/A | 0.00%0 shares | −6.56 ppfrom 6.56%Below 5% | Mar 31, 2025 | SEC |
| Apr 28, 20254:05 PM ET | Opaleye Management Inc. | 13G/A | 4.71%1.73M shares | −0.61 ppfrom 5.32%Below 5% | Mar 31, 2025 | SEC |
| Mar 7, 202512:58 PM ET | Janus Henderson Group PLCand 1 other | 13G/A | 10.30%3.79M shares | +3.70 ppfrom 6.60% | Feb 28, 2025 | SEC |
| Feb 14, 20256:40 PM ET | Ra Capital Management, L.P.and 3 others | 13G/A | 9.90%3.43M shares | – | Dec 31, 2024 | SEC |
| Feb 14, 20256:24 PM ET | Citadel Advisors LLCand 6 others | 13G/A | 4.70%1.63M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 14, 20254:06 PM ET | Woodline Partners LP | 13G/A | 3.90%1.33M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 14, 202511:23 AM ET | Janus Henderson Group PLCand 1 other | 13G | 6.60%2.27M shares | New | Dec 31, 2024 | SEC |
| Feb 14, 20256:31 AM ET | Opaleye Management Inc. | 13G/A | 5.32%1.82M shares | – | Dec 31, 2024 | SEC |
| Feb 12, 20259:30 AM ET | Adage Capital Management, L.P.and 2 others | 13G | 6.56%2.25M shares | New | Dec 31, 2024 | SEC |
| Apr 25, 2024 | Ra Capital Management, L.P. | 13GOld format | – | New | – | SEC |
| Apr 22, 2024 | Citadel Advisors LLC | 13GOld format | – | New | – | SEC |
| Apr 9, 2024 | CVI Investments, Inc. | 13GOld format | – | New | – | SEC |
| Feb 14, 2024 | OrbiMed Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | OrbiMed Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 15, 2022 | Perceptive Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 15, 2022 | Rock Springs Capital Management LP | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Ikarian Capital, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | OrbiMed Advisors LLC | 13GOld format | – | New | – | SEC |
| Feb 16, 2021 | Perceptive Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Rock Springs Capital Management LP | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Ikarian Capital, LLC | 13G/AOld format | – | – | – | SEC |
| Jan 8, 2021 | Flynn James E | 13D/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Protara Therapeutics, Inc. shares.
No Form 144 notices for Protara Therapeutics, Inc. are on file.