🕵️ Xencor Inc ($XNCR)
SEC insider & ownership activity, last 12 months · CIK 1326732 · every row links its SEC filing
Over the last 12 months insiders sold $3.9M with no open-market buying against it. Bassil I. Dahiyat sold $2.1M (Dec–Mar). Blackrock, Inc. trimmed 17.4% → 15.8%; State Street Corporation added 5.2% → 6.3%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 9 sellers, $3.9M (18 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Bassil I. Dahiyat | 0 | – | 4 | $2.1M | Mar 6, 2026 |
| John R. Desjarlais | 0 | – | 4 | $1.3M | Mar 6, 2026 |
| Gorman Kevin Charles | 0 | – | 1 | $93K | Jun 15, 2026 |
| Feigal Ellen | 0 | – | 1 | $89K | Jun 18, 2026 |
| Eckert Celia | 0 | – | 3 | $74K | Mar 6, 2026 |
| Cornelissen Bart Jan | 0 | – | 2 | $71K | Apr 10, 2026 |
| Kurt A. Gustafson | 0 | – | 1 | $67K | Jun 15, 2026 |
| Richard J. Ranieri | 0 | – | 1 | $67K | Jun 15, 2026 |
| Montgomery Alan Bruce | 0 | – | 1 | $62K | Jun 15, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 15.8% | 13G | Apr 29, 2025 | filing ↗ | |
| Primecap Management CO/CA/ | 14.8% | 13G | Aug 14, 2025 | filing ↗ | |
| BVF Partners L P/IL | 10.0% | 13G | Feb 17, 2026 | filing ↗ | |
| BVF INC/IL | 10.0% | 13G | Feb 17, 2026 | filing ↗ | |
| Mark N. Lampert | 10.0% | 13G | Feb 17, 2026 | filing ↗ | |
| BVF GP Holdings LLC | 9.2% | 13G | Feb 17, 2026 | filing ↗ | |
| RTW Investments, LP | 8.7% | 13G | Nov 14, 2025 | filing ↗ | |
| Roderick Wong | 8.7% | 13G | Nov 14, 2025 | filing ↗ | |
| RA Capital Management, L.P. | 6.5% | 13G | Mar 30, 2026 | filing ↗ | |
| Peter Kolchinsky | 6.5% | 13G | Mar 30, 2026 | filing ↗ | |
| Rajeev Shah | 6.5% | 13G | Mar 30, 2026 | filing ↗ | |
| RA Capital Healthcare Fund, L.P. | 6.5% | 13G | Mar 30, 2026 | filing ↗ | |
| State Street Corporation | 6.3% | 13G | Feb 9, 2026 | filing ↗ | |
| Biotechnology Value Fund L P | 5.3% | 13G | Feb 17, 2026 | filing ↗ | |
| BVF I GP LLC | 5.3% | 13G | Feb 17, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Feigal Ellen | $89K | Jun 18, 2026 | filing ↗ |
| Montgomery Alan Bruce | $62K | Jun 15, 2026 | filing ↗ |
| Richard J. Ranieri | $67K | Jun 15, 2026 | filing ↗ |
| Kurt A. Gustafson | $67K | Jun 15, 2026 | filing ↗ |
| Gorman Kevin Charles | $93K | Jun 15, 2026 | filing ↗ |
| Cornelissen Bart Jan | $43K | Apr 10, 2026 | filing ↗ |
| Eckert Celia | $19K | Mar 6, 2026 | filing ↗ |
| Bassil I. Dahiyat | $73K | Mar 6, 2026 | filing ↗ |
| John R. Desjarlais | $28K | Mar 6, 2026 | filing ↗ |
| Eckert Celia | $36K | Mar 5, 2026 | filing ↗ |
| Bassil I. Dahiyat | $167K | Mar 5, 2026 | filing ↗ |
| Cornelissen Bart Jan | $28K | Mar 5, 2026 | filing ↗ |
| John R. Desjarlais | $46K | Mar 5, 2026 | filing ↗ |
| Bassil I. Dahiyat | $80K | Mar 3, 2026 | filing ↗ |
| Eckert Celia | $18K | Mar 3, 2026 | filing ↗ |
| John R. Desjarlais | $32K | Mar 3, 2026 | filing ↗ |
| John R. Desjarlais | $1.2M | Dec 19, 2025 | filing ↗ |
| Bassil I. Dahiyat | $1.8M | Dec 19, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Shareholder vote (5.07) | Jun 16, 2026 | filing ↗ |
| Earnings (2.02) | May 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 4, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 23, 2026 | filing ↗ |
| Agreement terminated (1.02) | Mar 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 4, 2026 | filing ↗ |
| Earnings (2.02) | Feb 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 25, 2026 | filing ↗ |
| Earnings (2.02) | Jan 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 8, 2026 | filing ↗ |
| Earnings (2.02) | Nov 5, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 5, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 24, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 24, 2025 | filing ↗ |
| Earnings (2.02) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |
| Officer/director changes (5.02) | Jul 31, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 31, 2025 | filing ↗ |