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sellModerate10b5-1 plan

Jonathan Klamkin sold $499k of ALMU

Chief Executive Officer at Aeluma, Inc.. 20,000 shares at an average of $24.96, traded May 1, 2026, filed May 5, 2026.

Warning score
43
Value
$499k
20,000 shares
Holdings after
2,403
-89% from before
From 52-week low
+138%
low $10.73, close $25.58
From 52-week high
0%
high $25.58, as of May 1, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $499k at market
    +18
  • Share of holdings sold
    Sold 89% of holdings
    +20
  • Cluster
    No other insider selling within 14 days
    0
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -0.6%, 3m -33.4%, 6m -.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

ALMUOct 12, 2026 · close 10.42
Since filing May 5, 2026: -61.9%SPY +8.0% · excess -70.0%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001869626-26-000015, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 19, 2025GGift
Common Stock10b5-1
-350,000$0.00$01,129,398May 5, 2026
Dec 19, 2025GGift
Common Stockindirect: By Family Trust10b5-1
+350,000$0.00$0350,000May 5, 2026
Dec 29, 2025GGift
Common Stock10b5-1
-1,126,995$0.00$02,403May 5, 2026
Dec 29, 2025GGift
Common Stockindirect: By Family Trust10b5-1
+1,126,995$0.00$01,476,995May 5, 2026
Mar 4, 2026GGift
Common Stockindirect: By Family Trust10b5-1
-50,000$0.00$01,426,995May 5, 2026
Mar 4, 2026GGift
Common Stock10b5-1
+50,000$0.00$052,403May 5, 2026
Apr 1, 2026GGift
Common Stockindirect: By Family Trust10b5-1
-20,000$0.00$01,406,995May 5, 2026
Apr 1, 2026GGift
Common Stock10b5-1
+20,000$0.00$022,403May 5, 2026
May 1, 2026GGift
Common Stockindirect: By Family Trust10b5-1
-20,000$0.00$01,386,995May 5, 2026
May 1, 2026GGift
Common Stock10b5-1
+20,000$0.00$022,403May 5, 2026
May 1, 2026SOpen-market sale
Common Stock10b5-1
-4,300$24.20$104k18,103May 5, 2026
May 1, 2026SOpen-market sale
Common Stock10b5-1
-15,024$25.15$378k3,079May 5, 2026
May 1, 2026SOpen-market sale
Common Stock10b5-1
-676$25.71$17k2,403May 5, 2026

Related signals

Other insiders at Aeluma, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
ALMUsell10b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$1.3M
100,000 shares
-8%
30Weak
ALMUsell
Aeluma, Inc.
Steven Denbaars
director
$346k
25,000 shares
-7%
10Weak
ALMUsell10b5-1
Aeluma, Inc.
Steven Denbaars
director
$346k
25,000 shares
-7%
40Moderate
ALMUsell10b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$335k
20,000 shares
-89%
41Moderate
ALMUsell10b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$422k
20,000 shares
-89%
51Moderate
ALMUsell 210b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$501k
20,000 shares
-89%
21Weak
ALMUsell 210b5-1
Aeluma, Inc.
Steven Denbaars
director
$506k
25,000 shares
-6%
18Weak
ALMUsell10b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$262k
20,000 shares
-1%
37Weak
ALMUsell 210b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$903k
50,000 shares
-3%
19Weak
ALMUsell 210b5-1
Aeluma, Inc.
Steven Denbaars
director
$418k
25,000 shares
-6%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Jonathan Klamkin sold $499k of ALMU | InsiderTell