Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Aeluma, Inc.

ALMU · Nasdaq · CIK 0001828805 · Technology · Semiconductors

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

34 Form 4 transaction lines observed in the same window
22 sales · 12 option, withholding, award, gift or other lines

Last qualifying purchase2022-12-22 · Tompkins Mark N. · $250.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Klamkin JonathanChief Executive Officer
○▼○▼○▼○▼○○▼▼
Denbaars StevenDirector
▼▼▼▼▼▼
Stewart Christopher P.Chief Financial Officer
○○○
Byron MichaelDirector
○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2022-12-22 · Tompkins Mark N..

Recent Form 4 activity

0Purchases
60Sales
17Other Form 4 lines
27SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING22 sale line(s) · context only
OTHER12 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+2.3%
3M
-30.5%
6M
-2.2%
12M
—

Volatility & liquidity

Volatility
116.4%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
-205.3%
ROE
-16.1%
Industry
Semiconductors

Market data

Price data up to: 2026-10-02 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2026-06-30 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
3,722,208
Previous report
3,622,378
Avg daily volume
811,378
Days to cover
4.6

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2022-12-22Tompkins Mark N.Purchase (P)Common stock, par value $0.0001 per share83,333USD 3.00USD 249,999SEC filing ↗
2021-12-22Denbaars StevenPurchase (P)Common Stock33,333USD 3.00USD 99,999SEC filing ↗
2021-06-25Tompkins Mark N.Purchase (P)Common stock, par value $0.0001 per share107,500USD 2.00USD 215,000SEC filing ↗
2021-06-22Tompkins Mark N.Purchase (P)Common stock, par value $0.0001 per share250,000USD 2.00USD 500,000SEC filing ↗
2021-06-22Denbaars StevenPurchase (P)Common Stock100,000USD 2.00USD 200,000SEC filing ↗

Form 4 evidence

77 transaction lines in the latest 365-day window; 126 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Klamkin JonathanSale (S)Common Stock100,000USD 10.53USD 1,053,430SEC filing ↗
2026-09-30Stewart Christopher P.Tax withholding (F)Common Stock5,697USD 12.36USD 70,415SEC filing ↗
2026-09-21Stewart Christopher P.Tax withholding (F)Common Stock1,450USD 13.61USD 19,734SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Klamkin JonathanSale (S)Common Stock100,000USD 10.53USD 1,053,430SEC filing ↗
2026-09-30Stewart Christopher P.Tax withholding (F)Common Stock5,697USD 12.36USD 70,415SEC filing ↗
2026-09-21Stewart Christopher P.Tax withholding (F)Common Stock1,450USD 13.61USD 19,734SEC filing ↗
2026-09-21Stewart Christopher P.Award / grant (A)Common Stock19,928USD 0.00USD 0SEC filing ↗
2026-09-21Klamkin JonathanSale (S)Common Stock100,000USD 13.35USD 1,335,000SEC filing ↗
2026-09-21Klamkin JonathanTax withholding (F)Common Stock4,547USD 13.61USD 61,885SEC filing ↗
2026-09-21Klamkin JonathanAward / grant (A)Common Stock44,446USD 0.00USD 0SEC filing ↗
2026-09-21Byron MichaelOption exercise / conversion (M)Common Stock25,000USD 5.93USD 148,250SEC filing ↗
2026-08-27Denbaars StevenSale (S)Common Stock12,500USD 13.82USD 172,750SEC filing ↗
2026-08-27Denbaars StevenSale (S)Common Stock12,500USD 13.82USD 172,750SEC filing ↗
2026-08-26Denbaars StevenSale (S)Common Stock12,500USD 13.84USD 173,000SEC filing ↗
2026-08-26Denbaars StevenSale (S)Common Stock12,500USD 13.84USD 173,000SEC filing ↗
2026-08-03Klamkin JonathanSale (S)Common Stock20,000USD 16.73USD 334,654SEC filing ↗
2026-08-03Klamkin JonathanGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗
2026-07-01Klamkin JonathanSale (S)Common Stock20,000USD 21.08USD 421,648SEC filing ↗
2026-07-01Klamkin JonathanGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗
2026-06-01Klamkin JonathanSale (S)Common Stock20,000USD 25.04USD 500,742SEC filing ↗
2026-06-01Klamkin JonathanGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗
2026-05-20Denbaars StevenSale (S)Common Stock12,500USD 20.47USD 255,848SEC filing ↗
2026-05-19Denbaars StevenSale (S)Common Stock12,500USD 19.99USD 249,839SEC filing ↗
2026-05-01Klamkin JonathanSale (S)Common Stock20,000USD 24.96USD 499,294SEC filing ↗
2026-05-01Klamkin JonathanGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗
2026-04-01Klamkin JonathanGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗
2026-04-01Klamkin JonathanSale (S)Common Stock20,000USD 13.10USD 262,000SEC filing ↗
2026-03-04Klamkin JonathanSale (S)Common Stock50,000USD 18.05USD 902,448SEC filing ↗
2026-02-26Denbaars StevenSale (S)Common Stock12,500USD 15.85USD 198,125SEC filing ↗
2026-02-25Denbaars StevenSale (S)Common Stock12,500USD 17.58USD 219,750SEC filing ↗
2026-02-04Tompkins Mark N.Sale (S)Common Stock34,500USD 14.71USD 507,653SEC filing ↗
2026-02-02Tompkins Mark N.Sale (S)Common Stock37,500USD 15.74USD 590,250SEC filing ↗
2026-01-30Tompkins Mark N.Sale (S)Common Stock25,000USD 15.91USD 397,826SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerALMU
CIK0001828805
SectorTechnology
IndustrySemiconductors Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history126 transaction lines from 2021-06-21 to 2026-10-12
5 P purchase lines · 95 S sale lines · 26 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.