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sellModerate10b5-1 plan

Jonathan Klamkin sold $335k of ALMU

Chief Executive Officer at Aeluma, Inc.. 20,000 shares at an average of $16.73, traded Aug 3, 2026, filed Aug 5, 2026.

Warning score
40
Value
$335k
20,000 shares
Holdings after
2,403
-89% from before
From 52-week low
+55%
low $10.73, close $16.67
From 52-week high
-47%
high $31.49, as of Aug 3, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $335k at market
    +15
  • 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.

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 Aug 5, 2026: -38.0%SPY +1.3% · excess -39.4%

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 0001869626-26-000023, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 3, 2026GGift
Common Stockindirect: By Family Trust10b5-1
-20,000$0.00$01,326,995Aug 5, 2026
Aug 3, 2026GGift
Common Stock10b5-1
+20,000$0.00$022,403Aug 5, 2026
Aug 3, 2026SOpen-market sale
Common Stock10b5-1
-4,190$16.29$68k18,213Aug 5, 2026
Aug 3, 2026SOpen-market sale
Common Stock10b5-1
-15,810$16.85$266k2,403Aug 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%
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%
43Moderate
ALMUsell10b5-1
Aeluma, Inc.
Jonathan Klamkin
Chief Executive Officer
$499k
20,000 shares
-89%
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 $335k of ALMU | InsiderTell