As of November 6, 2026, Osi Systems Inc. is a publicly traded company (Nasdaq: OSIS); its largest reported holder is BlackRock, with 15.2% on Schedule 13G/A of October 27, 2026, then Vanguard (7.66%). The largest insider holding is Alan I. Edrick, the chief financial officer and executive vice president, with 306,538 shares (1.9% of shares outstanding), per Form 4 of August 25, 2026 (Schedule 13G/A, October 27, 2026).
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Is Osi Systems Inc. a real, registered company?
- Osi Systems Inc files with the SEC under CIK 1039065 (its SEC filings).
- Its shares are listed under the ticker OSIS on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Hawthorne, 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 OSI SYSTEMS INC in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Fidelity (FMR) (filed 2026-11-05).
Who are Osi Systems Inc.'s owners and officers?
Osi Systems Inc.: incorporated in Delaware; business address in Hawthorne, California; industry Semiconductors & Related Devices (Schedule 13G/A, 2026-11-05).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-11-05 | Fmr LLC | 6.7% |
| Schedule 13G/A, 2026-10-27 | Blackrock, Inc. | 15.2% |
| Schedule 13G, 2026-08-13 | Janus Henderson Group LTD. | 5.5% |
| Schedule 13G/A, 2026-08-06 | Fmr LLC | 10.8% |
| Schedule 13G, 2026-07-31 | Vanguard Capital Management | 5% |
| Schedule 13G/A, 2026-05-15 | Janus Henderson Group PLC | 4.7% |
| Schedule 13G/A, 2026-05-06 | Fmr LLC | 12.6% |
| Schedule 13G, 2026-04-29 | Vanguard Portfolio Management | 7.66% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-11 | Mawer Investment Management LTD. | 4.73% |
| Schedule 13G/A, 2026-01-08 | Fmr LLC | 10% |
| Schedule 13G/A, 2025-11-14 | Janus Henderson Group PLC | 5.9% |
Questions about who owns Osi Systems Inc.
Who owns Osi Systems Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of Osi Systems Inc.: Blackrock, Inc. (15.2%, Schedule 13G/A, filed 2026-10-27), Vanguard Portfolio Management (7.66%, Schedule 13G, filed 2026-04-29), Fmr LLC (6.7%, Schedule 13G/A, filed 2026-11-05), Janus Henderson Group LTD. (5.5%, Schedule 13G, filed 2026-08-13) and Vanguard Capital Management (5%, Schedule 13G, filed 2026-07-31).
Who are the largest shareholders of Osi Systems Inc.?
By the share each holder's latest filing reports, the largest holders of Osi Systems Inc. on this page are Blackrock, Inc. (15.2%), Vanguard Portfolio Management (7.66%) and Fmr LLC (6.7%).
When did Blackrock, Inc. buy into Osi Systems 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 15.2%. 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.
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
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What the Full Report on Osi Systems 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
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Which insiders own Osi Systems 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 financial officer and executive vice president: 306,538 shares (1.9% of shares outstanding) (Form 4, 2026-08-25).
- , a director: 250,194 shares (1.6% of shares outstanding) (Form 4, 2026-08-25).
- , the chief executive and president: 115,578 shares (0.73% of shares outstanding), 111,895 held directly and 3,683 indirectly (Form 4, 2026-08-25).
- , the general counsel: 100,995 shares (0.64% of shares outstanding), 95,607 held directly and 5,388 indirectly (Form 4, 2026-08-26).
- , the president and optoelectronics div: 78,094 shares (0.50% of shares outstanding) (Form 4, 2024-12-13).
Shares outstanding: 15,728,156 as of 2026-10-23, from the company's latest SEC cover page.
How much has Osi Systems Inc. raised?
No fundraising or offering filing from Osi Systems Inc. is on file with us.
Keep reading
More on Osi Systems Inc. and the records around it.
Osi Systems Inc. elsewhere on the record
- 5%+ stake filings Nov 2026
Companies that share a holder
- Mawer Investment Management Ltd. also filed stake reports on 10 other companies: Barrett Business Services Inc (Aug 2026), North American Construction Group Ltd. (May 2026), Warner Music Group Corp. (Nov 2025)
- JANUS HENDERSON GROUP PLC also filed stake reports on 104 other companies: SURGERY PARTNERS, INC. (Nov 2026), EYEPOINT, INC. (Sep 2026), TELEFLEX INCORPORATED (Sep 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
Related pages
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