As of November 6, 2026, Aeluma, Inc. is a publicly traded company (Nasdaq: ALMU); its largest reported holder is Perry George Herbert, with 5.6% on Schedule 13G of March 31, 2026, then BlackRock (5.3%). The largest insider holding is Mark N. Tompkins with 1,790,488 shares (9.3% of shares outstanding), per Form 4 of February 5, 2026 (Schedule 13G, March 31, 2026).
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Is Aeluma, Inc. a real, registered company?
- Aeluma, Inc. files with the SEC under CIK 1828805 (its SEC filings).
- Its shares are listed under the ticker ALMU on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Goleta, 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 Aeluma, 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 BlackRock (filed 2026-07-27).
Who are Aeluma, Inc.'s owners and officers?
Aeluma, Inc.: incorporated in Delaware; business address in Goleta, California; industry Semiconductors & Related Devices (Schedule 13G, 2026-07-27).
Officers and directors, each with the role and the filing that names them:
- : Executive Officer, Director (Form D, 2024-08-08)
- : Director (Form D, 2024-08-08)
- : Director (Form D, 2024-08-08)
- : Director (Form D, 2024-08-08)
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-07-27 | Blackrock, Inc. | 5.3% |
| Schedule 13G/A, 2026-05-15 | Mark N. Tompkins | 4.83% |
| Schedule 13G, 2026-03-31 | Perry George Herbert | 5.6% |
| Schedule 13G/A, 2026-02-17 | Mark N. Tompkins | 11.34% |
| Schedule 13D/A, 2026-01-02 | Lee Mccarthy | 1.5% |
| Schedule 13G/A, 2025-11-14 | Mark N. Tompkins | 15.99% |
Questions about who owns Aeluma, Inc.
Who owns Aeluma, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of Aeluma, Inc.: Perry George Herbert (5.6%, Schedule 13G, filed 2026-03-31) and Blackrock, Inc. (5.3%, Schedule 13G, filed 2026-07-27).
Who are the largest shareholders of Aeluma, Inc.?
By the share each holder's latest filing reports, the largest holders of Aeluma, Inc. on this page are Perry George Herbert (5.6%) and Blackrock, Inc. (5.3%).
When did Perry George Herbert buy into Aeluma, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Perry George Herbert on this page is the Schedule 13G, filed 2026-03-31, reporting 5.6%.
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%); 6 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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Which insiders own Aeluma, 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.
- Mark N. Tompkins: 1,790,488 shares (9.3% of shares outstanding) (Form 4, 2026-02-05).
- , the chief executive and a director: 1,169,297 shares (6.1% of shares outstanding), 42,302 held directly and 1,126,995 indirectly (Form 4, 2026-10-14).
- , a 10% owner: 977,425 shares (5.1% of shares outstanding) (Form 4, 2026-01-02).
- , a director: 345,209 shares (1.8% of shares outstanding) (Form 4/A, 2026-08-28).
- , the chief financial officer: 67,781 shares (0.35% of shares outstanding) (Form 4, 2026-10-01).
Shares outstanding: 19,265,671 as of 2026-09-11, from the company's latest SEC cover page.
How much has Aeluma, Inc. raised?
| Filed | Sold | Offered |
|---|---|---|
| Form D, 2024-08-08 | $1.80M | $4M |
| Form D, 2022-12-27 | $1.55M | $4M |
Latest IPO step: Aeluma, Inc. filed its final IPO prospectus, ticker ALMU (424B4, 2025-03-27).
IPO filings: 424B4, 2025-03-27, S-1/A, 2025-03-25, S-1/A, 2025-03-25, S-1/A, 2025-03-20, S-1, 2025-02-28; ticker ALMU on Nasdaq Capital Market.
Keep reading
More on Aeluma, Inc. and the records around it.
Aeluma, Inc. elsewhere on the record
- 5%+ stake filings Jul 2026
Companies that share a holder
- Mark N. Tompkins also filed stake reports on 8 other companies: Los Altos Ventures Corp. (Jun 2026), Deep Fission, Inc. (May 2026), Deep Isolation Nuclear, Inc. (May 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
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