Aeluma, Inc.
ALMU- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001828805
In the last 90 days, Aeluma, Inc. insiders filed 0 open-market purchases and 4 sales; 97 institutions reported holding it in 13F filings for Q2 2026, worth $119.6M in total; no superinvestor holds it.
Holders of 5% or more of ALMU
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Aeluma, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Tompkins Mark N. | 13G/A | 11.34%2.02M shares | −4.65 ppfrom 15.99% | Apr 3, 20253 filings | Feb 17, 2026 | SEC |
| Perry George Herbert | 13G | 5.60%1.00M shares | New | Mar 31, 20261 filing | Mar 31, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
7 Schedule 13D and 13G filings on Aeluma, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 31, 20262:32 PM ET | Perry George Herbertand 1 other | 13G | 5.60%1.00M shares | New | Mar 30, 2026 | SEC |
| Feb 17, 20265:28 PM ET | Tompkins Mark N. | 13G/A | 11.34%2.02M shares | −4.65 ppfrom 15.99% | Dec 31, 2025 | SEC |
| Jan 2, 20265:16 PM ET | McCarthy Lee | 13D/A | 1.50%270.1K shares | –Below 5% | Aug 1, 2024 | SEC |
| Nov 14, 20253:36 PM ET | Tompkins Mark N. | 13G/A | 15.99%2.86M shares | −2.51 ppfrom 18.50% | Sep 30, 2025 | SEC |
| Jun 6, 20254:41 PM ET | AWM Investment Company, Inc. | 13G/A | 2.60%409.8K shares | −2.70 ppfrom 5.30%Below 5% | May 30, 2025 | SEC |
| May 7, 202512:46 PM ET | AWM Investment Company, Inc. | 13G | 5.30%825.0K shares | New | Mar 31, 2025 | SEC |
| Apr 3, 20255:32 PM ET | Tompkins Mark N. | 13G/A | 18.50%2.92M shares | – | Mar 27, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Aeluma, Inc. shares.
No Form 144 notices for Aeluma, Inc. are on file.