As of November 6, 2026, Allegro Microsystems, Inc. is a publicly traded company (Nasdaq: ALGM); its largest reported holder is Invesco, with 7.3% on Schedule 13G of August 13, 2026, then Capital Research Global Investors (7.1%). The largest insider holding is Michael Doogue, the chief executive and president, with 531,873 shares (0.29% of shares outstanding), per Form 4 of May 19, 2026 (Schedule 13G, August 13, 2026).
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Is Allegro Microsystems, Inc. a real, registered company?
- Allegro Microsystems, Inc. files with the SEC under CIK 866291 (its SEC filings).
- Its shares are listed under the ticker ALGM on Nasdaq (SEC company record).
- business address in Manchester, New Hampshire, 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 ALLEGRO MICROSYSTEMS, 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 2026-10-07).
Who are Allegro Microsystems, Inc.'s owners and officers?
Allegro Microsystems, Inc.: business address in Manchester, New Hampshire; industry Semiconductors & Related Devices (Schedule 13G/A, 2026-11-05).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-11-05 | Jpmorgan Chase & Co. | 4.3% |
| Schedule 13G/A, 2026-10-07 | Fmr LLC | 5.3% |
| Schedule 13G, 2026-08-13 | Invesco LTD. | 7.3% |
| Schedule 13G/A, 2026-08-06 | Fmr LLC | 13.7% |
| Schedule 13G/A, 2026-07-27 | Blackrock, Inc. | 6.9% |
| Schedule 13G, 2026-07-16 | Jpmorgan Chase & Co | 6.8% |
| Schedule 13G/A, 2026-05-06 | Fmr LLC | 14.8% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-12 | Capital Research Global Investors | 7.1% |
| Schedule 13G/A, 2026-02-05 | Fmr LLC | 12.8% |
| Schedule 13G/A, 2025-08-13 | Capital Research Global Investors | 8.6% |
Questions about who owns Allegro Microsystems, Inc.
Who owns Allegro Microsystems, Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of Allegro Microsystems, Inc.: Invesco LTD. (7.3%, Schedule 13G, filed 2026-08-13), Capital Research Global Investors (7.1%, Schedule 13G/A, filed 2026-02-12), Blackrock, Inc. (6.9%, Schedule 13G/A, filed 2026-07-27), Jpmorgan Chase & Co (6.8%, Schedule 13G, filed 2026-07-16) and Fmr LLC (5.3%, Schedule 13G/A, filed 2026-10-07).
Who are the largest shareholders of Allegro Microsystems, Inc.?
By the share each holder's latest filing reports, the largest holders of Allegro Microsystems, Inc. on this page are Invesco LTD. (7.3%), Capital Research Global Investors (7.1%) and Blackrock, Inc. (6.9%).
When did Invesco LTD. buy into Allegro Microsystems, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Invesco LTD. on this page is the Schedule 13G, filed 2026-08-13, reporting 7.3%.
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%); 11 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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What the Full Report on Allegro Microsystems, 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
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Which insiders own Allegro Microsystems, 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: 531,873 shares (0.29% of shares outstanding), 279,076 held directly and 252,797 indirectly (Form 4, 2026-05-19).
- , the chief executive and president: 356,113 shares (0.19% of shares outstanding) (Form 4, 2024-11-06).
- , the senior vice president of worldwide sales: 266,339 shares (0.14% of shares outstanding) (Form 4, 2024-11-19).
- , the chief financial officer and executive vice president: 238,813 shares (0.13% of shares outstanding) (Form 4, 2026-05-19).
- , a director: 217,811 shares (0.12% of shares outstanding) (Form 4, 2026-08-07).
Shares outstanding: 186,483,352 as of 2026-10-26, from the company's latest SEC cover page.
How much has Allegro Microsystems, Inc. raised?
No fundraising or offering filing from Allegro Microsystems, Inc. is on file with us.
Keep reading
More on Allegro Microsystems, Inc. and the records around it.
Companies that share a holder
- Invesco Ltd. also filed stake reports on 83 other companies: Alignment Healthcare Inc (Aug 2026), ArcBest Corp (Aug 2026), ARKO Petroleum Corp (Aug 2026)
- Capital Research Global Investors also filed stake reports on 99 other companies: Royal Caribbean Cruises Ltd. (Oct 2026), Patria Investments Ltd. (Sep 2026), Arxis, Inc. (Aug 2026)
- JPMORGAN CHASE & CO also filed stake reports on 116 other companies: LEVI STRAUSS & CO (Nov 2026), Warner Music Group Corp. (Nov 2026), Andersen Group Inc. (Oct 2026)
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