Aeluma ALMU Insider Ownership

NASDAQ ALMU
$14.77 -0.15 (-1.01%)
At close: Aug 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

6.30Mn Shares

Insider Ownership Statistics

as of 30 Jun, 2026
Insider Ownership
35.25%
-10.33% pp QoQ
Shares Held by Insiders
6.30Mn
filed for Jun 2026
-22.67% QoQ
Shares Outstanding
17.88Mn
17,875,930 shares
Direct Holdings
6.30Mn
Indirect: 0
Net Shares Traded (QoQ)
-1.85Mn
net selling in Jun 2026
Insiders Holding Shares
3
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Jun, 2026

Aeluma's three largest insider shareholders as of August 04, 2026 are Mark N. Tompkins (TenPercentOwner, 2.72Mn shares), Mark N. Tompkins (Other, 1.79Mn shares), Jonathan Klamkin (Chief Executive Officer, 1.41Mn shares).

Form 4 Holdings

Insiders Holding ALMU

Insiders 3
Shares held 6.30Mn
Of outstanding 35.25%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Mark N. Tompkins Other 4,506,321 0 4,506,321 71.5% 05 Feb, 2026
2 Jonathan Klamkin Chief Executive Officer 1,409,398 0 1,409,398 22.4% 03 Apr, 2026
3 Steven Denbaars Director 385,088 0 385,088 6.1% 27 Feb, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

251 Insider Transactions

Source SEC Form 4
Latest quarter Jun 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
01 Apr, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 20,000 $13.10 $261.95K 1,409,398 Direct
01 Apr, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 20,000 $13.10 $261.95K 1,409,398 Direct
01 Apr, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 20,000 $13.10 $261.95K 1,409,398 Direct
04 Mar, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 28,206 $17.77 $501.35K 1,451,192 Direct
04 Mar, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 28,206 $17.77 $501.35K 1,451,192 Direct
04 Mar, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 28,206 $17.77 $501.35K 1,451,192 Direct
04 Mar, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 21,794 $18.41 $401.25K 1,429,398 Direct
04 Mar, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 21,794 $18.41 $401.25K 1,429,398 Direct
04 Mar, 2026 Jonathan Klamkin Chief Executive Officer Disposed S 21,794 $18.41 $401.25K 1,429,398 Direct
25 Feb, 2026 Steven Denbaars Director Disposed S 12,500 $17.58 $219.77K 397,588 Direct
26 Feb, 2026 Steven Denbaars Director Disposed S 12,500 $15.85 $198.09K 385,088 Direct
04 Feb, 2026 Mark N. Tompkins Other Disposed S 28,544 $14.63 $417.60K 1,796,444 Direct
04 Feb, 2026 Mark N. Tompkins Other Disposed S 28,544 $14.63 $417.60K 1,796,444 Direct
04 Feb, 2026 Mark N. Tompkins Other Disposed S 28,544 $14.63 $417.60K 1,796,444 Direct
04 Feb, 2026 Mark N. Tompkins Other Disposed S 5,956 $15.12 $90.05K 1,790,488 Direct
04 Feb, 2026 Mark N. Tompkins Other Disposed S 5,956 $15.12 $90.05K 1,790,488 Direct
04 Feb, 2026 Mark N. Tompkins Other Disposed S 5,956 $15.12 $90.05K 1,790,488 Direct
29 Jan, 2026 Mark N. Tompkins TenPercentOwner Disposed S 27,297 $16.75 $457.22K 1,892,691 Direct
29 Jan, 2026 Mark N. Tompkins TenPercentOwner Disposed S 27,297 $16.75 $457.22K 1,892,691 Direct
29 Jan, 2026 Mark N. Tompkins TenPercentOwner Disposed S 27,297 $16.75 $457.22K 1,892,691 Direct