Skip to main content

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.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Aeluma, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
4 filings
2 insiders, $2.44M in total
Insiders trading
2
Net value
−$2.44M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Aeluma, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Aeluma, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Stewart Christopher P.Chief Financial Officer18,478Sep 23, 20261
Klamkin JonathanChief Executive Officer42,302Sep 23, 20267
Byron MichaelDirector38,343Sep 23, 20262
Denbaars StevenDirector345,209Aug 28, 20264
Ensley Craig HDirector27,300Mar 2, 20261
Paglia John KennethDirector23,361Mar 2, 20261
Tompkins Mark N.Other: Former 10% Owner1,790,488Feb 5, 202613
McCarthy Lee10% Owner977,425Jan 2, 20261

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 23, 2026 (view filing)7:16 PM ETSep 212 daysKlamkin JonathanChief Executive OfficerSSale−100.0K$13.35−$1.34M−7.5%1.23M after10b5-1
Aug 28, 2026 (view filing)5:54 PM ETAug 26-272 daysDenbaars StevenDirectorSSale−25.0K$13.83−$345.7K−6.8%345.2K afterAmended2 lots10b5-1
Aug 5, 2026 (view filing)4:08 PM ETAug 32 daysKlamkin JonathanChief Executive OfficerSSale−20.0K$16.73−$334.6K−89.3%2.40K after2 lots10b5-1
Jul 2, 2026 (view filing)4:04 PM ETJul 11 dayKlamkin JonathanChief Executive OfficerSSale−20.0K$21.08−$421.7K−89.3%2.40K after2 lots10b5-1
Jun 3, 2026 (view filing)Jun 12 daysKlamkin JonathanChief Executive OfficerSSale−20.0K$25.04−$500.7K−89.3%2.40K after5 lots10b5-1
May 21, 2026 (view filing)May 19-202 daysDenbaars StevenDirectorSSale−25.0K$20.23−$505.7K−6.3%370.2K after4 lots10b5-1
May 5, 2026 (view filing)May 14 daysKlamkin JonathanChief Executive OfficerSSale−20.0K$24.96−$499.3K−89.3%2.40K after3 lots10b5-1
Apr 3, 2026 (view filing)Apr 12 daysKlamkin JonathanChief Executive OfficerSSale−20.0K$13.10−$262.0K−1.4%1.41M after10b5-1
Mar 5, 2026 (view filing)Mar 41 dayKlamkin JonathanChief Executive OfficerSSale−50.0K$18.05−$902.4K−3.4%1.43M after2 lots10b5-1
Feb 27, 2026 (view filing)Feb 25-262 daysDenbaars StevenDirectorSSale−25.0K$16.72−$417.9K−6.1%385.1K after2 lots10b5-1
Feb 5, 2026 (view filing)Feb 41 dayTompkins Mark N.Other: Former 10% OwnerSSale−34.5K$14.71−$507.7K−1.9%1.79M after2 lots
Feb 2, 2026 (view filing)Jan 29-Feb 24 daysTompkins Mark N.10% OwnerSSale−95.0K$16.15−$1.53M−4.9%1.82M after5 lots
Jan 22, 2026 (view filing)Jan 20-222 daysTompkins Mark N.10% OwnerSSale−105.0K$19.14−$2.01M−5.2%1.92M after8 lots
Jan 2, 2026 (view filing)5:18 PM ETFeb 17, 20231,050 daysLateMcCarthy Lee10% OwnerSSale−649.6K$0.0061−$3.96K−39.9%977.4K after
Dec 29, 2025 (view filing)Dec 23-266 daysTompkins Mark N.10% OwnerSSale−60.0K$16.62−$997.4K−2.9%2.02M after5 lots
Dec 22, 2025 (view filing)Dec 18-224 daysTompkins Mark N.10% OwnerSSale−85.0K$14.68−$1.25M−3.9%2.08M after3 lots
Dec 11, 2025 (view filing)Dec 9-102 daysTompkins Mark N.10% OwnerSSale−50.0K$17.09−$854.3K−2.3%2.17M after3 lots
Dec 9, 2025 (view filing)Dec 4-85 daysLateTompkins Mark N.10% OwnerSSale−100.0K$16.08−$1.61M−4.3%2.22M after6 lots
Oct 21, 2025 (view filing)Oct 17-204 daysTompkins Mark N.10% OwnerSSale−77.5K$16.67−$1.29M−3.2%2.32M after4 lots
Oct 17, 2025 (view filing)Oct 15-162 daysTompkins Mark N.10% OwnerSSale−65.0K$20.09−$1.31M−2.6%2.40M after5 lots
Oct 14, 2025 (view filing)Oct 10-144 daysTompkins Mark N.10% OwnerSSale−107.2K$17.87−$1.92M−4.2%2.46M after5 lots
Oct 9, 2025 (view filing)Oct 7-92 daysTompkins Mark N.10% OwnerSSale−106.9K$17.25−$1.84M−4.0%2.57M after7 lots
Oct 6, 2025 (view filing)Oct 2-64 daysTompkins Mark N.10% OwnerSSale−129.8K$18.00−$2.34M−4.6%2.68M after5 lots
Oct 6, 2025 (view filing)Sep 306 daysTompkins Mark N.10% OwnerSSale−33.8K$16.18−$546.9K−1.2%2.86M afterAmended
Oct 2, 2025 (view filing)Sep 29-Oct 13 daysTompkins Mark N.10% OwnerSSale−75.7K$17.10−$1.29M−2.6%2.81M afterFrom original5 lots
Sep 9, 2025 (view filing)Aug 1426 daysKlamkin JonathanChief Executive OfficerSSale−150.0K$18.85−$2.83M−9.2%1.48M afterAmended
Jan 13, 2023 (view filing)Dec 22, 202222 daysLateTompkins Mark N.10% OwnerPPurchaseCommon stock, par value $0.0001 per share+83.3K$3.00+$250.0K+3.2%2.72M after