Xencor Inc
Ownership
Ownership Structure
Who owns Xencor Inc (XNCR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 73.0% of the shares are freely tradable; institutional investors hold 115.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 17.53 | 13,035,918 | +9.3 | 03/31/2026 |
| PRIMECAP Management Company | 13.69 | 10,181,322 | -1.5 | 06/30/2026 |
| Bvf Inc | 9.59 | 7,133,720 | +0.0 | 03/31/2026 |
| RTW INVESTMENTS, LLC | 9.12 | 6,777,461 | +0.0 | 03/31/2026 |
| RA Capital Management, LLC | 6.59 | 4,897,237 | +0.0 | 03/31/2026 |
| State Street Corp | 5.85 | 4,352,036 | -3.4 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.71 | 3,500,342 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| PRIMECAP Odyssey Aggressive Growth | 8.56 | 6,364,727 | -0.2 | 06/30/2026 |
| iShares Core S&P Small-Cap ETF | 6.08 | 4,519,680 | +0.0 | 08/31/2026 |
| PRIMECAP Odyssey Growth | 4.22 | 3,134,000 | -2.6 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Klencke Barbara | Director | 29,974 | 737,360 $ | Jun 16, 2026 | direct |
| Montgomery Alan Bruce | Director | 25,849 | 635,885 $ | Jun 16, 2026 | direct |
| Gustafson Kurt A | Director | 25,011 | 615,271 $ | Jun 16, 2026 | direct |
| Ranieri Richard J | Director | 24,011 | 590,671 $ | Jun 16, 2026 | direct |
| Simpson Todd E | Director | 23,988 | 590,105 $ | Jun 16, 2026 | direct |
| Feigal Ellen | Director | 22,642 | 556,993 $ | Jun 16, 2026 | direct |
| Gorman Kevin Charles | Director | 21,680 | 533,328 $ | Jun 16, 2026 | direct |
| Deshaies Raymond Joseph | Director | 10,302 | 253,429 $ | Jun 16, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 16, 2026 | Deshaies Raymond Joseph | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Feigal Ellen | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Klencke Barbara | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Gustafson Kurt A | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Montgomery Alan Bruce | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Ranieri Richard J | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Simpson Todd E | Director | Other | 10,302 | 0.00 | – |
| Jun 16, 2026 | Gorman Kevin Charles | Director | Other | 10,302 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.