Xencor Inc
XNCR- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001326732
No open-market purchases or sales by Xencor Inc insiders were filed in the last 90 days; 208 institutions reported holding it in 13F filings for Q2 2026, worth $1.36B in total; no superinvestor holds it.
Holders of 5% or more of XNCR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Xencor Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 15.80%11.1M shares | −1.60 ppfrom 17.40% | Feb 5, 20252 filings | Apr 29, 2025 | SEC |
| Primecap Management Co | 13G/A | 14.79%10.5M shares | – | Aug 14, 20251 filing | Aug 14, 2025 | SEC |
| RTW Investments, LP | 13G | 8.70%6.22M shares | New | Nov 14, 20251 filing | Nov 14, 2025 | SEC |
| Ra Capital Management, L.P. | 13G | 6.50%4.74M shares | New | Mar 30, 20261 filing | Mar 30, 2026 | SEC |
| Biotechnology Value Fund L P | 13G | 6.50%4.62M shares | New | Oct 17, 20251 filing | Oct 17, 2025 | SEC |
| State Street Corp | 13G | 5.20%3.68M shares | New | May 13, 20251 filing | May 13, 2025 | 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
12 Schedule 13D and 13G filings on Xencor Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 30, 20268:38 PM ET | Ra Capital Management, L.P.and 3 others | 13G | 6.50%4.74M shares | New | Mar 23, 2026 | SEC |
| Mar 27, 20262:13 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −10.03 ppfrom 10.03%Below 5% | Mar 13, 2026 | SEC |
| Dec 3, 202511:13 AM ET | Vanguard Group Inc | 13G/A | 10.03%7.17M shares | +0.08 ppfrom 9.95% | Nov 28, 2025 | SEC |
| Nov 14, 202512:19 PM ET | Price T Rowe Associates Inc | 13G/A | 2.40%1.69M shares | –Below 5% | Sep 30, 2025 | SEC |
| Nov 14, 20258:34 AM ET | RTW Investments, LPand 1 other | 13G | 8.70%6.22M shares | New | Sep 30, 2025 | SEC |
| Oct 31, 202511:42 AM ET | Vanguard Group Inc | 13G/A | 9.95%7.10M shares | −2.16 ppfrom 12.11% | Sep 30, 2025 | SEC |
| Oct 17, 20254:56 PM ET | Biotechnology Value Fund L Pand 9 others | 13G | 6.50%4.62M shares | New | Oct 9, 2025 | SEC |
| Aug 14, 20251:29 PM ET | Primecap Management Co | 13G/A | 14.79%10.5M shares | – | Jun 30, 2025 | SEC |
| Jul 29, 20252:49 PM ET | Vanguard Group Inc | 13G/A | 12.11%8.62M shares | – | Jun 30, 2025 | SEC |
| May 13, 202512:33 PM ET | State Street Corp | 13G | 5.20%3.68M shares | New | Mar 31, 2025 | SEC |
| Apr 29, 20253:16 PM ET | BlackRock, Inc. | 13G/A | 15.80%11.1M shares | −1.60 ppfrom 17.40% | Mar 31, 2025 | SEC |
| Feb 5, 20255:28 PM ET | BlackRock, Inc. | 13G/A | 17.40%12.2M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Xencor Inc shares.
No Form 144 notices for Xencor Inc are on file.