Aeluma, Inc
Ownership
Ownership Structure
Who owns Aeluma, Inc (ALMU)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 74.8% of the shares are freely tradable; institutional investors hold 27.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 4.70 | 859,707 | +4.3 | 03/31/2026 |
| D. E. Shaw & Co LP | 4.36 | 797,983 | +3,091.9 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.22 | 588,751 | +0.0 | 03/31/2026 |
| Millennium Management LLC | 2.89 | 529,005 | +32.8 | 06/30/2026 |
| Geode Capital Management, LLC | 1.61 | 295,322 | +3.4 | 03/31/2026 |
| State Street Corp | 1.35 | 247,345 | +15.9 | 03/31/2026 |
| Apis Capital Advisors, LLC | 1.13 | 206,000 | +2.0 | 03/31/2026 |
| Awm Investment Company Inc | 1.09 | 200,000 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.34 | 428,381 | +0.0 | 07/31/2026 |
| iShares Russell 2000 ETF | 1.84 | 337,413 | -0.6 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Denbaars Steven | Director | 345,209 | 4,384,154 $ | Aug 27, 2026 | direct |
| Klamkin Jonathan | Chief Executive Officer | 2,403 | 30,518 $ | Aug 3, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 27, 2026 | Denbaars Steven | Director | Sell | 12,500 | 13.82 | 172,698 |
| Aug 26, 2026 | Denbaars Steven | Director | Sell | 12,500 | 13.84 | 173,044 |
| Aug 3, 2026 | Klamkin Jonathan | Chief Executive Officer | Sell | 15,810 | 16.85 | 266,378 |
| Aug 3, 2026 | Klamkin Jonathan | Chief Executive Officer | Sell | 4,190 | 16.29 | 68,263 |
| Aug 3, 2026 | Klamkin Jonathan | Chief Executive Officer | Other | 20,000 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.