Aeluma (ALMU) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$11.40
-4.4% on the day
-30.9% over 12 months
52-week range $10.73 – $31.49
Share price and insider trades
ALMU closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$21.0M
Insiders buying0
Insiders selling4
Aeluma insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 4 sold $21.0M of ALMU stock on the open market.
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ALMU insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $2.8M | 9 |
| Q2 2026 | — | 0 | $1.8M | 13 |
| Q1 2026 | — | 0 | $5.4M | 19 |
| Q4 2025 | — | 0 | $14.3M | 45 |
| Q3 2025 | — | 0 | $1.5M | 5 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.9×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 Aeluma, Inc. insiders reported open-market purchases totaling $0, while 4 insiders reported sales totaling $21.0M. 24 of 92 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ALMU earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Sep 16, 2026 | +0.2% | Sold $692K | -12.1%S&P +0.7% | pending |
| May 13, 2026 | +35.7% | Sold $499K | -1.7%S&P +1.4% | -5.4% |
| Feb 11, 2026 | +3.5% | Sold $4.1M | -7.5%S&P -1.6% | -3.7% |
| Nov 12, 2025 | -9.0% | Sold $3.9M | -6.9%S&P -1.6% | +35.3% |
| Sep 9, 2025 | -10.6% | None | -25.4%S&P +0.5% | +21.7% |
| May 7, 2025 | +71.2% | None | +8.6%S&P +1.1% | +50.8% |
| Feb 10, 2025 | -6.9% | None | -6.7%S&P +0.8% | -2.4% |
| Nov 8, 2024 | +5.2% | None | +13.4%S&P +0.5% | +27.2% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 23SEC | Jonathan KlamkinCEO | Sell Plan | 100,0001,226,995 held (−8%) | $13.35 | $1.3M | -14.6% | — |
| Aug 28SEC | Steven DenbaarsDirector | Sell Plan | 12,500357,709 held (−3%) | $13.84 | $173K | -17.6% | — |
| Aug 28SEC | Steven DenbaarsDirector | Sell | 12,500357,709 held (−3%) | $13.84 | $173K | -17.6% | — |
| Aug 28SEC | Steven DenbaarsDirector | Sell Plan | 12,500345,209 held (−3%) | $13.82 | $173K | -17.5% | — |
| Aug 28SEC | Steven DenbaarsDirector | Sell | 12,500345,209 held (−3%) | $13.82 | $173K | -17.5% | — |
| Aug 5SEC | Jonathan KlamkinCEO | Sell Plan | 15,8102,403 held (−87%) | $16.85 | $266K | -32.3% | — |
| Aug 5SEC | Jonathan KlamkinCEO | Sell Plan | 4,19018,213 held (−19%) | $16.29 | $68K | -30.0% | — |
| Jul 2SEC | Jonathan KlamkinCEO | Sell Plan | 19,9002,503 held (−89%) | $21.08 | $419K | -45.9% | — |
| Jul 2SEC | Jonathan KlamkinCEO | Sell Plan | 1002,403 held (−4%) | $21.56 | $2K | -47.1% | — |
| Jun 3SEC | Jonathan KlamkinCEO | Sell Plan | 8,2002,403 held (−77%) | $26.25 | $215K | -56.6% | — |
| Jun 3SEC | Jonathan KlamkinCEO | Sell Plan | 7,90012,203 held (−39%) | $24.39 | $193K | -53.3% | — |
| Jun 3SEC | Jonathan KlamkinCEO | Sell Plan | 1,60010,603 held (−13%) | $25.12 | $40K | -54.6% | — |
| Jun 3SEC | Jonathan KlamkinCEO | Sell Plan | 1,40020,103 held (−7%) | $23.32 | $33K | -51.1% | — |
| Jun 3SEC | Jonathan KlamkinCEO | Sell Plan | 90021,503 held (−4%) | $22.19 | $20K | -48.6% | — |
| May 21SEC | Steven DenbaarsDirector | Sell Plan | 11,558371,151 held (−3%) | $20.40 | $236K | -44.1% | — |
| May 21SEC | Steven DenbaarsDirector | Sell Plan | 7,415387,794 held (−2%) | $19.56 | $145K | -41.7% | — |
| May 21SEC | Steven DenbaarsDirector | Sell Plan | 5,085382,709 held (−1%) | $20.61 | $105K | -44.7% | — |
| May 21SEC | Steven DenbaarsDirector | Sell Plan | 942370,209 held (−0%) | $21.30 | $20K | -46.5% | — |
| May 5SEC | Jonathan KlamkinCEO | Sell Plan | 15,0243,079 held (−83%) | $25.15 | $378K | -54.7% | — |
| May 5SEC | Jonathan KlamkinCEO | Sell Plan | 4,30018,103 held (−19%) | $24.20 | $104K | -52.9% | — |
| May 5SEC | Jonathan KlamkinCEO | Sell Plan | 6762,403 held (−22%) | $25.71 | $17K | -55.7% | — |
| Apr 3SEC | Jonathan KlamkinCEO | Sell Plan | 20,0001,409,398 held (−1%) | $13.10 | $262K | -13.0% | — |
| Mar 5SEC | Jonathan KlamkinCEO | Sell Plan | 28,2061,451,192 held (−2%) | $17.77 | $501K | -35.8% | — |
| Mar 5SEC | Jonathan KlamkinCEO | Sell Plan | 21,7941,429,398 held (−2%) | $18.41 | $401K | -38.1% | — |
| Feb 27SEC | Steven DenbaarsDirector | Sell Plan | 12,500397,588 held (−3%) | $17.58 | $220K | -35.2% | — |
| Feb 27SEC | Steven DenbaarsDirector | Sell Plan | 12,500385,088 held (−3%) | $15.85 | $198K | -28.1% | — |
| Feb 5SEC | Mark N. TompkinsFormer 10% Owner | Sell | 28,5441,796,444 held (−2%) | $14.63 | $418K | -22.1% | — |
| Feb 5SEC | Mark N. TompkinsFormer 10% Owner | Sell | 5,9561,790,488 held (−0%) | $15.12 | $90K | -24.6% | — |
| Feb 2SEC | Mark N. Tompkins10% Owner | Sell | 37,5001,824,988 held (−2%) | $15.74 | $590K | -27.6% | — |
| Feb 2SEC | Mark N. Tompkins10% Owner | Sell | 27,2971,892,691 held (−1%) | $16.75 | $457K | -31.9% | — |
| Feb 2SEC | Mark N. Tompkins10% Owner | Sell | 24,0921,863,396 held (−1%) | $15.88 | $383K | -28.2% | — |
| Feb 2SEC | Mark N. Tompkins10% Owner | Sell | 5,2031,887,488 held (−0%) | $17.16 | $89K | -33.6% | — |
| Feb 2SEC | Mark N. Tompkins10% Owner | Sell | 9081,862,488 held (−0%) | $16.79 | $15K | -32.1% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 29,1121,995,876 held (−1%) | $20.66 | $601K | -44.8% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 30,3281,964,660 held (−2%) | $18.52 | $562K | -38.4% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 29,0381,920,950 held (−1%) | $18.05 | $524K | -36.8% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 12,9471,951,713 held (−1%) | $19.30 | $250K | -40.9% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 1,7151,949,998 held (−0%) | $20.44 | $35K | -44.2% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 8881,994,988 held (−0%) | $21.58 | $19K | -47.2% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 9621,919,988 held (−0%) | $18.81 | $18K | -39.4% | — |
| Jan 22SEC | Mark N. Tompkins10% Owner | Sell | 101,949,988 held (−0%) | $21.24 | $212 | -46.3% | — |
| Jan 2SEC | Lee Mccarthy10% Owner | Sell | 649,570977,425 held (−40%) | $0.01 | $6K | +113900.0% | — |
| Dec 29SEC | Mark N. Tompkins10% Owner | Sell | 20,3682,027,650 held (−1%) | $18.01 | $367K | -36.7% | — |
| Dec 29SEC | Mark N. Tompkins10% Owner | Sell | 15,0002,054,988 held (−1%) | $16.05 | $241K | -29.0% | — |
| Dec 29SEC | Mark N. Tompkins10% Owner | Sell | 15,0002,069,988 held (−1%) | $14.87 | $223K | -23.3% | — |
| Dec 29SEC | Mark N. Tompkins10% Owner | Sell | 6,9702,048,018 held (−0%) | $16.91 | $118K | -32.6% | — |
| Dec 29SEC | Mark N. Tompkins10% Owner | Sell | 2,6622,024,988 held (−0%) | $18.39 | $49K | -38.0% | — |
| Dec 22SEC | Mark N. Tompkins10% Owner | Sell | 35,0002,084,988 held (−2%) | $14.83 | $519K | -23.1% | — |
| Dec 22SEC | Mark N. Tompkins10% Owner | Sell | 30,0002,119,988 held (−1%) | $14.70 | $441K | -22.4% | — |
| Dec 22SEC | Mark N. Tompkins10% Owner | Sell | 20,0002,149,988 held (−1%) | $14.37 | $287K | -20.7% | — |
| Dec 11SEC | Mark N. Tompkins10% Owner | Sell | 20,0002,169,988 held (−1%) | $17.49 | $350K | -34.8% | — |
| Dec 11SEC | Mark N. Tompkins10% Owner | Sell | 19,1392,189,988 held (−1%) | $17.06 | $327K | -33.2% | — |
| Dec 11SEC | Mark N. Tompkins10% Owner | Sell | 10,8612,209,127 held (−0%) | $16.39 | $178K | -30.4% | — |
| Dec 9SEC | Mark N. Tompkins10% Owner | Sell | 39,0122,220,976 held (−2%) | $16.04 | $626K | -28.9% | — |
| Dec 9SEC | Mark N. Tompkins10% Owner | Sell | 28,3902,261,598 held (−1%) | $16.12 | $458K | -29.3% | — |
| Dec 9SEC | Mark N. Tompkins10% Owner | Sell | 18,5002,289,988 held (−1%) | $16.37 | $303K | -30.4% | — |
| Dec 9SEC | Mark N. Tompkins10% Owner | Sell | 11,5002,308,488 held (−0%) | $15.49 | $178K | -26.4% | — |
| Dec 9SEC | Mark N. Tompkins10% Owner | Sell | 1,6102,259,988 held (−0%) | $16.49 | $27K | -30.9% | — |
| Dec 9SEC | Mark N. Tompkins10% Owner | Sell | 9882,219,988 held (−0%) | $16.87 | $17K | -32.4% | — |
| Oct 21SEC | Mark N. Tompkins10% Owner | Sell | 37,5002,319,988 held (−2%) | $16.39 | $615K | -30.4% | — |
| Oct 21SEC | Mark N. Tompkins10% Owner | Sell | 33,3442,364,144 held (−1%) | $16.75 | $559K | -31.9% | — |
| Oct 21SEC | Mark N. Tompkins10% Owner | Sell | 5,9132,358,231 held (−0%) | $17.77 | $105K | -35.8% | — |
| Oct 21SEC | Mark N. Tompkins10% Owner | Sell | 7432,357,488 held (−0%) | $18.45 | $14K | -38.2% | — |
| Oct 17SEC | Mark N. Tompkins10% Owner | Sell | 24,1472,438,341 held (−1%) | $20.11 | $486K | -43.3% | — |
| Oct 17SEC | Mark N. Tompkins10% Owner | Sell | 15,8532,422,488 held (−1%) | $21.31 | $338K | -46.5% | — |
| Oct 17SEC | Mark N. Tompkins10% Owner | Sell | 17,5402,404,948 held (−1%) | $18.97 | $333K | -39.9% | — |
| Oct 17SEC | Mark N. Tompkins10% Owner | Sell | 6,6502,398,298 held (−0%) | $19.96 | $133K | -42.9% | — |
| Oct 17SEC | Mark N. Tompkins10% Owner | Sell | 8102,397,488 held (−0%) | $20.72 | $17K | -45.0% | — |
| Oct 14SEC | Mark N. Tompkins10% Owner | Sell | 36,8552,462,488 held (−1%) | $19.86 | $732K | -42.6% | — |
| Oct 14SEC | Mark N. Tompkins10% Owner | Sell | 35,0312,499,643 held (−1%) | $16.97 | $594K | -32.8% | — |
| Oct 14SEC | Mark N. Tompkins10% Owner | Sell | 30,5872,539,087 held (−1%) | $16.60 | $508K | -31.3% | — |
| Oct 14SEC | Mark N. Tompkins10% Owner | Sell | 4,4132,534,674 held (−0%) | $17.16 | $76K | -33.6% | — |
| Oct 14SEC | Mark N. Tompkins10% Owner | Sell | 3002,499,343 held (−0%) | $17.57 | $5K | -35.1% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 34,3002,607,282 held (−1%) | $17.46 | $599K | -34.7% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 35,9082,570,674 held (−1%) | $16.54 | $594K | -31.1% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 26,6932,649,889 held (−1%) | $17.46 | $466K | -34.7% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 7,9072,641,982 held (−0%) | $18.66 | $148K | -38.9% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 1,0002,569,674 held (−0%) | $17.25 | $17K | -33.9% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 7002,606,582 held (−0%) | $18.14 | $13K | -37.2% | — |
| Oct 9SEC | Mark N. Tompkins10% Owner | Sell | 4002,641,582 held (−0%) | $19.16 | $8K | -40.5% | — |
| Oct 6SEC | Mark N. Tompkins10% Owner | Sell | 63,6042,676,582 held (−2%) | $18.70 | $1.2M | -39.0% | — |
| Oct 6SEC | Mark N. Tompkins10% Owner | Sell | 34,8802,771,453 held (−1%) | $17.10 | $596K | -33.3% | — |
| Oct 6SEC | Mark N. Tompkins10% Owner | Sell | 33,8002,857,033 held (−1%) | $16.18 | $547K | -29.5% | — |
| Oct 6SEC | Mark N. Tompkins10% Owner | Sell | 18,1892,753,144 held (−1%) | $17.30 | $315K | -34.1% | — |
| Oct 6SEC | Mark N. Tompkins10% Owner | Sell | 12,9582,740,186 held (−0%) | $17.94 | $232K | -36.5% | — |
| Oct 6SEC | Mark N. Tompkins10% Owner | Sell | 1202,771,333 held (−0%) | $17.58 | $2K | -35.2% | — |
| Oct 2SEC | Mark N. Tompkins10% Owner | Sell | 41,3672,806,333 held (−1%) | $16.97 | $702K | -32.8% | — |
| Oct 2SEC | Mark N. Tompkins10% Owner | Sell | 33,3802,857,033 held (−1%) | $16.18 | $540K | -29.5% | — |
| Oct 2SEC | Mark N. Tompkins10% Owner | Sell | 23,3822,892,451 held (−1%) | $17.52 | $410K | -34.9% | — |
| Oct 2SEC | Mark N. Tompkins10% Owner | Sell | 9,1332,847,700 held (−0%) | $16.39 | $150K | -30.4% | — |
| Oct 2SEC | Mark N. Tompkins10% Owner | Sell | 1,6182,890,833 held (−0%) | $18.36 | $30K | -37.9% | — |
| Oct 2SEC | Mark N. Tompkins10% Owner | Sell | 2002,856,833 held (−0%) | $17.54 | $4K | -35.0% | — |
Insiders at Aeluma, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Mark N. TompkinsFormer 10% Owner | — | $19.8M | Feb 5, 2026 | — |
| Jonathan KlamkinCEO | — | $4.3M | Sep 23, 2026 | — |
| Steven DenbaarsDirector | — | $1.6M | Aug 28, 2026 | — |
| Lee Mccarthy10% Owner | — | $6K | Jan 2, 2026 | — |
ALMU stock: common questions
Are Aeluma, Inc. insiders buying ALMU stock?
In the past 12 months, 0 insiders reported open-market purchases of ALMU worth $0.
Are Aeluma, Inc. insiders selling ALMU stock?
4 insiders reported sales worth $21.0M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ALMU's 52-week range?
Over the past year ALMU has traded between $10.73 and $31.49. It last closed at $11.40 on Oct 9, 2026.