Aeluma 13G/A: Ownership Falls to 4.83% (885,000)

Aeluma, Inc. reports an amended Schedule 13G/A showing reduced ownership.

Rhea-AI Filing Summary

Aeluma, Inc. reports an amended Schedule 13G/A showing reduced ownership. Mark N. Tompkins now reports 885,000 shares of Common Stock, representing 4.83% of the class based on May 8, 2026 outstanding shares. The amendment states this is an exit filing because the reporting person ceased to be a beneficial owner of more than 5%. The filing notes the reported percentage is calculated from 18,305,335 shares outstanding as of May 8, 2026 and that the reported amount includes the reporting person’s beneficial ownership as of March 31, 2026.

Insights

Equity Ownership Analyst

Ownership fell below the 5% reporting threshold; filing is administrative.

The amendment (Amendment No. 6) indicates the reporting person holds 885,000 shares, equal to 4.83% of the issuer's common stock based on May 8, 2026 outstanding shares. The filing explicitly calls this an exit filing, meaning the holder no longer exceeds the 5% beneficial ownership threshold.

Cash‑flow treatment and whether shares were sold or otherwise transferred are not specified in the excerpt; subsequent filings would be required for details on how the position changed.

Regulatory Compliance Specialist

Form 13G/A amendment corrects prior reporting to reflect current ownership.

The schedule lists registration details and ownership figures tied to the issuer's reported outstanding shares (18,305,335 as of May 8, 2026). The amendment language follows the Schedule 13G/A exit convention by stating the reporting person "ceased to be the beneficial owner of more than 5%".

Investors seeking transaction specifics or counterparty information must consult additional SEC filings; the excerpt does not disclose disposition method or proceeds.

Key Figures

Amount beneficially owned: 885,000 shares Percent of class: 4.83% Shares outstanding (basis): 18,305,335 shares

3 metrics

Amount beneficially owned 885,000 shares reported by Mark N. Tompkins in Amendment No. 6

Percent of class 4.83% calculated based on outstanding shares as of May 8, 2026

Shares outstanding (basis) 18,305,335 shares reported in the issuer's Form 10-Q, basis for percentage

Key Terms

Amendment No. 6, exit filing, beneficially owned

3 terms

Amendment No. 6 regulatory

"This Amendment No. 6 constitutes an exit filing as the Reporting Person has ceased"

exit filing regulatory

"This Amendment No. 6 constitutes an exit filing as the Reporting Person has ceased to be the beneficial owner"

beneficially owned regulatory

"Amount beneficially owned: 885,000; the percentage is calculated based on 18,305,335 shares"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does AELUMA (ALMU) Schedule 13G/A Amendment No. 6 mean?

It means the filer, Mark N. Tompkins, now reports 885,000 shares, equal to 4.83% of Aeluma's outstanding common stock as of May 8, 2026. The amendment is an exit filing because holdings fell below the 5% threshold.

How many Aeluma shares were outstanding for the percentage calculation?

The percentage is calculated using 18,305,335 shares outstanding as of May 8, 2026, per the company’s Form 10-Q. That outstanding count is the basis for the reported 4.83% ownership figure.

Does this filing state how Mark N. Tompkins reduced his stake in ALMU?

No. The amendment notes the reporting person "ceased to be the beneficial owner of more than 5%" but does not describe whether shares were sold, transferred, or otherwise disposed of. Transaction details are not provided in the excerpt.

Is this Schedule 13G/A filing material for ALMU shareholders?

This amendment is primarily administrative: it documents a change in reported ownership to below 5%. The excerpt does not disclose any corporate actions or financial impacts tied to the ownership change.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 05:41 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 6)

Aeluma, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

00776X109

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 00776X109

1

Names of Reporting Persons

Mark N. Tompkins

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 885,000.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 885,000.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

885,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.83 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: With respect to Row (11), the percentage is calculated based on 18,305,335 shares of Common Stock of the Issuer issued and outstanding as of May 8, 2026, as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the SEC on May 13, 2026. The reported amount includes the Reporting Person's beneficial ownership as of March 31, 2026, the date which triggered the obligation to file this Schedule 13G/A. This Amendment No. 6 constitutes an exit filing as the Reporting Person has ceased to be the beneficial owner of more than 5% of the Issuer's total shares outstanding.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Aeluma, Inc.
(b)	Address of issuer's principal executive offices: 27 Castilian Drive, Goleta, California 93117
Item 2.
(a)	Name of person filing: Mark N. Tompkins
(b)	Address or principal business office or, if none, residence: Apt. 1, Via Guidino 23 6900 Lugano-Paradiso, Switzerland
(c)	Citizenship: Canada
(d)	Title of class of securities: Common Stock, par value $0.0001 per share
(e)	CUSIP No.: 00776X109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 885,000
(b)	Percent of class: 4.83%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 885,000
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 885,000
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Mark N. Tompkins

Signature:	/s/ Mark N. Tompkins
Name/Title:	Mark N. Tompkins
Date:	05/15/2026