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ALMU · Aeluma, Inc.
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ALMU Aeluma (ALMU) Insider Trading, Ownership & Congress Trades

Semiconductors & Electronics · Semiconductors & related devices · CIK 0001828805
Quote by TradingView
Form 144 · 3
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
55
13F, latest reported quarter
Conversions, 180 days
1
Codes C/M, not in net · $148.2K priced

What the filings say about ALMU

Insiders, 180 days
-$4.5M net sold
2 sellers · 24% of sales under a 10b5-1 plan
Planned sales (Form 144), 90 days
$2.8M
3 notices

Aeluma insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, Aeluma, Inc. insiders sold a net $4.5M of stock across 94 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-29.

Insider
Filed
Shares
Value
Since filing
Klamkin Jonathan
Chief Executive Officer
SELL
2026-10-14 SECtraded 2026-10-12
100,000
$1.1M
-11.1%
Context
  • 17 earlier Form 4 trades (code P or S) here by this insider (17 sales), the last on Sep 21, 2026.
  • The trade is 8.9% of the 1,126,995 shares held after it.
  • No other insider sold within 30 days.
  • 55 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Executive Officer Klamkin Jonathan sold about $1.1M of ALMU under a 10b5-1 plan on Oct 12, 2026; 55 funds added in the latest 13F quarter.
Klamkin Jonathan
Chief Executive Officer
SELL
2026-09-23 SECtraded 2026-09-21
100,000
$1.3M
-41.1%
Context
  • 16 earlier Form 4 trades (code P or S) here by this insider (16 sales), the last on Aug 3, 2026.
  • The trade is 8.1% of the 1,226,995 shares held after it.
  • 1 other insider sold within 30 days.
  • 55 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Executive Officer Klamkin Jonathan sold about $1.3M of ALMU under a 10b5-1 plan on Sep 21, 2026, the largest insider sale at the company since 2025; 1 other insider sold within 30 days and 55 funds added in the latest 13F quarter.
Denbaars Steven
Director
SELL
2026-08-28 SECtraded 2026-08-27
12,500
$172.7K
-39.9%
Context
  • 8 earlier Form 4 trades (code P or S) here by this insider (1 buy, 7 sales), the last on Aug 26, 2026.
  • The trade is 3.6% of the 345,209 shares held after it.
  • 1 other insider sold within 30 days.
  • 55 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Denbaars Steven sold about $172.7K of ALMU under a 10b5-1 plan on Aug 27, 2026; 1 other insider sold within 30 days and 55 funds added in the latest 13F quarter.
Denbaars Steven
Director
SELL
2026-08-28 SECtraded 2026-08-26
12,500
$173.0K
-39.9%
Context
  • 7 earlier Form 4 trades (code P or S) here by this insider (1 buy, 6 sales), the last on May 20, 2026.
  • The trade is 3.5% of the 357,709 shares held after it.
  • 1 other insider sold within 30 days.
  • 55 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Denbaars Steven sold about $173.0K of ALMU under a 10b5-1 plan on Aug 26, 2026; 1 other insider sold within 30 days and 55 funds added in the latest 13F quarter.
Klamkin Jonathan
Chief Executive Officer
SELL
2026-08-05 SECtraded 2026-08-03
4,190
$68.3K
-53.9%
Context
  • 14 earlier Form 4 trades (code P or S) here by this insider (14 sales), the last on Jul 1, 2026.
  • The trade is 23.0% of the 18,213 shares held after it.
  • 1 other insider sold within 30 days.
  • 55 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Executive Officer Klamkin Jonathan sold about $68.3K of ALMU on Aug 3, 2026; 1 other insider sold within 30 days and 55 funds added in the latest 13F quarter.
94 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
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Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net -$4.5M over 180 days
-$3.1M over 90 days
more than 52% of Semiconductors & Electronics
Congress
no House purchase disclosed in the last 12 months
Funds
55 funds bought in last quarter
below 72% of Semiconductors & Electronics
Revenue
-4.4% year over year
below 77% of Semiconductors & Electronics
Margin
-205.3% net margin
below 90% of Semiconductors & Electronics
Buybacks
no share repurchases reported
Short interest
26.9% of the float short (float per yahoo 2026-10-28) · 6.5 days to cover · settled 2026-10-15
more than 94% of Semiconductors & Electronics
What changed in the last 30 days
Oct 14Chief Executive Officer Klamkin Jonathan sold $1.1M under a 10b5-1 plan (Oct 12)
Why it matters
A 10b5-1 plan schedules trades months ahead, so this says little about what the insider thinks today.
Oct 13Director Klamkin Drelle Gelasca Family Trust dated 08/28/2025 filed to sell $1.1M by Oct 12 (Form 144)
Why it matters
A Form 144 is a notice of intent to sell; the sale may not happen, and it says nothing about the price.

Watch ALMU

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The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-50.0%12M
-58%-5%+47%+100%2025-102025-122026-022026-042026-062026-082026-10 2026-09-21 · Klamkin Jonathan sold $1.3M2026-10-12 · Klamkin Jonathan sold $1.1M2025-12-08 · Tompkins Mark N. sold $625.8K2026-01-20 · Tompkins Mark N. sold $601.5K2026-02-02 · Tompkins Mark N. sold $590.2K2026-01-21 · Tompkins Mark N. sold $561.7K2026-01-22 · Tompkins Mark N. sold $524.1K2025-12-22 · Tompkins Mark N. sold $519.0K2026-03-04 · Klamkin Jonathan sold $501.2K2025-12-05 · Tompkins Mark N. sold $457.6K2026-01-29 · Tompkins Mark N. sold $457.2K2025-12-19 · Tompkins Mark N. sold $441.0K2026-07-01 · Klamkin Jonathan sold $419.5K2026-02-04 · Tompkins Mark N. sold $417.6K2026-03-04 · Klamkin Jonathan sold $401.2K2026-01-30 · Tompkins Mark N. sold $382.6K2026-05-01 · Klamkin Jonathan sold $377.9K2025-12-26 · Tompkins Mark N. sold $366.8K2025-12-10 · Tompkins Mark N. sold $349.8K2025-12-09 · Tompkins Mark N. sold $326.5K2025-12-04 · Tompkins Mark N. sold $302.8K2025-12-18 · Tompkins Mark N. sold $287.4K2026-08-03 · Klamkin Jonathan sold $266.4K2026-04-01 · Klamkin Jonathan sold $262.0K2026-01-21 · Tompkins Mark N. sold $249.9K2025-12-24 · Tompkins Mark N. sold $240.8K2026-05-20 · Denbaars Steven sold $235.8K2025-12-23 · Tompkins Mark N. sold $223.1K2026-02-25 · Denbaars Steven sold $219.7K2026-06-01 · Klamkin Jonathan sold $215.2K2026-02-26 · Denbaars Steven sold $198.1K2026-06-01 · Klamkin Jonathan sold $192.7K2025-12-04 · Tompkins Mark N. sold $178.1K2025-12-09 · Tompkins Mark N. sold $178.0K2026-08-26 · Denbaars Steven sold $173.0K2026-08-27 · Denbaars Steven sold $172.7K2026-05-19 · Denbaars Steven sold $145.0K2025-12-26 · Tompkins Mark N. sold $117.9K2026-05-19 · Denbaars Steven sold $104.8K2026-05-01 · Klamkin Jonathan sold $104.1K2026-02-04 · Tompkins Mark N. sold $90.1K2026-01-29 · Tompkins Mark N. sold $89.3K2026-10-13 · Klamkin Drelle Gelasca Family Trust dated 08/28/2025 filed to sell $1.1M2026-09-21 · Klamkin Drelle Gelasca Family Trust dated 08/28/2025 filed to sell $1.3M2026-08-26 · Steven DenBaars filed to sell $347.0K2026-07-01 · JONATHAN KLAMKIN filed to sell $883.2K
Insider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns ALMU: institutional holders (13F)

13F holdings, latest reported quarter
BlackRock, Inc.
973,235 sh
$21.5M
D. E. Shaw & Co., Inc.
797,983 sh
$17.6M
VANGUARD CAPITAL MANAGEMENT LLC
574,417 sh
$12.7M
MILLENNIUM MANAGEMENT LLC
529,005 sh
$11.7M
GEODE CAPITAL MANAGEMENT, LLC
318,018 sh
$7.0M

Congress trades in ALMU

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

ALMU planned insider sales (Form 144)

Notice of intent to sell, filed before any sale
Klamkin Drelle Gelasca Family Trust dated 08/28/2025
Filed 2026-10-13
$1.1M
Klamkin Drelle Gelasca Family Trust dated 08/28/2025
Filed 2026-09-21
$1.3M
Steven DenBaars
Filed 2026-08-26
$347.0K
JONATHAN KLAMKIN
Filed 2026-07-01
$883.2K

ALMU mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
WisdomTree Quantum Computing Fund
$1.4M position · as of 2026-06-30
0.4%
Lazard US Systematic Small Cap Equity ETF
$107.4K position · as of 2026-06-30
0.2%
iShares Micro-Cap ETF
$961.5K position · as of 2026-06-30
0.1%
Small Cap Core Fund
$147.2K position · as of 2026-06-30
0.0%
1290 VT Micro Cap Portfolio
$63.7K position · as of 2026-06-30
0.0%
VANGUARD U.S. MOMENTUM FACTOR ETF
$489.9K position · as of 2026-05-31
0.0%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $4.5M sold by insiders over 180 days, 55 funds added last quarter, $2.8M in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
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ALMU financials

Revenue growth
-4.4%
XBRL, annual
Net margin
-205.3%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$4.5M
four quarters, 2025-07-01 to 2026-06-30
Net margin, TTM
-205.3%
net income over revenue, 2025-07-01 to 2026-06-30
Free cash flow, TTM
-$3.9M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
0.08x
long-term 2024-12-31 (18 months older than the period end) plus current 2024-08-31 (22 months older than the period end); equity 2026-06-30
Cash flow to debt
-0.73x
TTM operating cash flow over long-term 2024-12-31 (18 months older than the period end) plus current 2024-08-31 (22 months older than the period end)
Return on equity
-24.5%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets
-22.9%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
n/a
the filed year and its quarters do not reconcile, so the trailing figure is withheld
Return on capital employed
n/a
the filed year and its quarters do not reconcile, so the trailing figure is withheld
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Enterprise value
$100.1M
market value at close 2026-10-28 on 2026-09-11 shares, plus long-term 2024-12-31 (18 months older than the period end) plus current 2024-08-31 (22 months older than the period end), minus cash 2026-06-30
FCF yield
-2.6%
TTM free cash flow over market value at close 2026-10-28
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Price as of 2026-10-28. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2026-062025-062024-062023-06
Revenue$4.5M$4.7M$919.0K$193.3K
Operating income-$10.2M-$2.1M-$4.6M-$5.5M
Net income-$9.2M-$3.0M-$4.6M-$5.4M
EPS (diluted)-0.52-0.23-0.37-0.47
Operating cash flow-$3.3M-$1.1M-$3.5M-$3.6M
Cash$56.0M$3.6M$1.3M$5.1M
Long-term debtn/an/an/a$296.5K
Buybacksn/an/a$4.0Kn/a
SEC XBRL, fiscal years, as known on 2026-10-29

ALMU Stock Sonar score 6/7 axes

Find similar shapesCompare

ALMU ranks highest on growth (61st percentile) and financial health (45th), and lowest on risk and compliance (19th), among Semiconductors & Electronics peers.

ProfitHealthGrowthInsidersInstitutionsRisk
Profitability
24
Inputs
  • Return on equity-24.5% · 25 pct, sector of 154
  • Return on assets-22.9% · 24 pct, sector of 171
  • Return on invested capitalthe filed year and its quarters do not reconcile, so the trailing figure is withheld
  • Return on capital employedthe filed year and its quarters do not reconcile, so the trailing figure is withheld
Financial health
45
Inputs
  • Debt to equity0.08x · 66 pct, sector of 152
  • Cash flow to debt-0.73x · 23 pct, sector of 136
Growth
61
Inputs
  • Revenue growth, YoY-4.4% · 23 pct, sector of 194
  • Backlog growth, YoY+1930% · 98 pct, sector of 51
Insider conviction
31
Inputs
  • Net Form 4 buying (codes P and S), 180d-$1.8M · 63 pct, sector of 146
  • Insider buyers, 180d0 · 0 pct, sector of 150
Institutional and government
28
Inputs
  • Funds adding, latest quarter55 · 28 pct, sector of 184
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
19
Inputs
  • Short interest, % of float+26.9% · 7 pct, sector of 220
  • Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
  • EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
  • New text in Risk Factors, latest 10-K+16.0% · 32 pct, sector of 152
1 not measured: US patents
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

ALMU filings, in plain words

Are Aeluma insiders buying or selling ALMU?

In the 180 days to 2026-10-29, Aeluma insiders were net sellers, a net $4.5M across purchases and sales reported on Form 4, by 2 sellers.

Are there planned insider sales of ALMU?

Yes. 3 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-29, covering $2.8M of stock; the latest, by Klamkin Drelle Gelasca Family Trust dated 08/28/2025, was filed 2026-10-13.

Read the full summary

In the 180 days to 2026-10-29, Aeluma insiders were net sellers of ALMU, a net $4.5M across purchases and sales reported on Form 4 by 2 sellers. 24% of the 17 insider sales were made under a Rule 10b5-1 plan; the rest were not flagged as planned. Insiders filed 3 Form 144 notices of intent to sell in the 90 days to 2026-10-29, covering $2.8M of stock. Each figure is counted from SEC and House filings as of 2026-10-29, dated the day the filing was made public.

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