As of November 7, 2026, Xencor Inc is a publicly traded company (Nasdaq: XNCR); its largest reported holder is BlackRock, with 14.5% on Schedule 13G/A of October 27, 2026, then Primecap Management Co. (13.29%). The largest insider holding is Bassil I. Dahiyat, the chief executive and president, with 546,316 shares (0.73% of shares outstanding), per Form 4 of March 9, 2026 (Schedule 13G/A, October 27, 2026).
Is this your company?
About to sign with, pay or invest in Xencor Inc? See the free Snapshot first.
Free to see. No signup.
Is Xencor Inc a real, registered company?
- Xencor Inc files with the SEC under CIK 1326732 (its SEC filings).
- Its shares are listed under the ticker XNCR on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Pasadena, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Xencor Inc in our court records and SEC 8-K records (as of 2026-11-07).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Primecap Management Co. (filed 2026-11-06).
Who are Xencor Inc's owners and officers?
Xencor Inc: incorporated in Delaware; business address in Pasadena, California; industry Pharmaceutical Preparations (Schedule 13G/A, 2026-11-06).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-11-06 | Primecap Management Co/Ca/ | 13.29% |
| Schedule 13G/A, 2026-10-30 | Vanguard Capital Management | 4.99% |
| Schedule 13G/A, 2026-10-27 | Blackrock, Inc. | 14.5% |
| Schedule 13G, 2026-07-31 | Vanguard Capital Management | 5.13% |
| Schedule 13G/A, 2026-05-15 | Ecor1 Capital, LLC | 2.9% |
| Schedule 13G, 2026-03-30 | Ra Capital Management, L.P. | 6.5% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-17 | Bvf Partners L P/Il | 9.99% |
| Schedule 13G/A, 2026-02-17 | Ecor1 Capital, LLC | 6.4% |
| Schedule 13G, 2026-02-09 | State Street Corporation | 6.3% |
| Schedule 13G/A, 2025-12-03 | The Vanguard Group | 10.03% |
| Schedule 13G, 2025-11-14 | Rtw Investments, LP | 8.7% |
Questions about who owns Xencor Inc
Who owns Xencor Inc?
On this page, 6 holders' latest ownership filings report 5% or more of Xencor Inc: Blackrock, Inc. (14.5%, Schedule 13G/A, filed 2026-10-27), Primecap Management Co/Ca/ (13.29%, Schedule 13G/A, filed 2026-11-06), Bvf Partners L P/Il (9.99%, Schedule 13G/A, filed 2026-02-17), Rtw Investments, LP (8.7%, Schedule 13G, filed 2025-11-14) and Ra Capital Management, L.P. (6.5%, Schedule 13G, filed 2026-03-30); 1 more is listed above.
Who are the largest shareholders of Xencor Inc?
By the share each holder's latest filing reports, the largest holders of Xencor Inc on this page are Blackrock, Inc. (14.5%), Primecap Management Co/Ca/ (13.29%) and Bvf Partners L P/Il (9.99%).
When did Blackrock, Inc. buy into Xencor Inc?
The filings give report dates, not purchase dates. The earliest filing from Blackrock, Inc. on this page is the Schedule 13G/A, filed 2026-10-27, reporting 14.5%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Want the whole picture on Xencor Inc?
Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News
A Full Report on Xencor Inc: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Xencor Inc covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
18 cited sources found
Plus the sections for what you are deciding, which you pick after ordering.
A real finished report, first screen. Opens in a new tab.
Which insiders own Xencor Inc shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 546,316 shares (0.73% of shares outstanding) (Form 4, 2026-03-09).
- , the president and cso: 263,831 shares (0.35% of shares outstanding) (Form 4, 2026-03-09).
- , the general counsel and senior vice president: 76,918 shares (0.10% of shares outstanding) (Form 4, 2026-03-09).
- , the president and chief financial officer: 75,898 shares (0.10% of shares outstanding) (Form 4, 2026-04-13).
- , the executive vice president and chief development officer: 49,169 shares (0.07% of shares outstanding) (Form 4, 2025-05-06).
Shares outstanding: 75,039,689 as of 2026-10-30, from the company's latest SEC cover page.
How much has Xencor Inc raised?
No fundraising or offering filing from Xencor Inc is on file with us.
Keep reading
More on Xencor Inc and the records around it.
Xencor Inc elsewhere on the record
- 5%+ stake filings Nov 2026
Companies that share a holder
- EcoR1 Capital, LLC also filed stake reports on 20 other companies: Mereo BioPharma Group plc (Aug 2026), Alto Neuroscience, Inc. (Jul 2026), Fulcrum Therapeutics, Inc. (Jun 2026)
- PRIMECAP MANAGEMENT CO/CA/ also filed stake reports on 24 other companies: GRAIL, Inc. (Nov 2026), MARKETAXESS HOLDINGS INC (Nov 2026), Pulmonx Corp (Nov 2026)
- RTW Investments, LP also filed stake reports on 43 other companies: CG Oncology, Inc. (Aug 2026), iRhythm Holdings, Inc. (Aug 2026), Kailera Therapeutics, Inc. (Aug 2026)
Related pages
Filings, cases and notices link to their records. A not-found line names the records searched; it is not proof of absence.
Not for employment, credit, insurance or tenancy decisions.
Cite this page
https://mentionfox.com/who-owns/xencor