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

Allison Transmission Holdings Inc

ALSN · NYSE · CIK 0001411207 · Consumer Cyclical · Auto Parts

INSIDER SIGNAL

No active buy signal

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

20 Form 4 transaction lines observed in the same window
7 sales · 13 option, withholding, award, gift or other lines

Last qualifying purchase2025-08-14 · Bohley G Frederick · $265.5K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
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
Bohley G FrederickSee Remarks
○○○▼
Mell Scott ACFO & Treasurer
○▼
Christman Philip JDirector
○○
BARBOUR D. SCOTTDirector
○○
Graziosi David S.Chair, President and CEO
○▼
Shivram KrishnaDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 3 additional owner(s) remain in Form 4 evidence.

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: 2025-08-14 · Bohley G Frederick.

Recent Form 4 activity

0Purchases
12Sales
53Other Form 4 lines
27SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING7 sale line(s) · context only
OTHER13 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
-7.1%
3M
+0.9%
6M
+0.5%
12M
—

Volatility & liquidity

Volatility
31.1%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
20.7%
ROE
33.4%
Industry
Auto Parts

Market data

Price data up to: 2026-10-02 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

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

Shares short
2,329,669
Previous report
2,419,049
Avg daily volume
951,115
Days to cover
2.5

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
2025-08-14Bohley G FrederickPurchase (P)Common Stock3,000USD 88.50USD 265,500SEC filing ↗
2025-08-14Bohley G FrederickPurchase (P)Common Stock3,000USD 89.50USD 268,500SEC filing ↗
2021-11-12RABAUT THOMAS WPurchase (P)Common Stock5,475USD 36.59USD 200,330SEC filing ↗
2020-03-06Bohley G FrederickPurchase (P)Common Stock2,500USD 38.25USD 95,625SEC filing ↗
2020-03-03Bohley G FrederickPurchase (P)Common Stock5,000USD 40.50USD 202,500SEC filing ↗

Form 4 evidence

65 transaction lines in the latest 365-day window; 699 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-21Graziosi David S.Sale (S)Common Stock26,708USD 132.98USD 3,551,514SEC filing ↗
2026-08-21Graziosi David S.Option exercise / conversion (M)Common Stock26,708USD 38.11USD 1,017,842SEC filing ↗
2026-08-11Scroggins Eric C.Sale (S)Common Stock1,050USD 125.00USD 131,250SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-21Graziosi David S.Sale (S)Common Stock26,708USD 132.98USD 3,551,514SEC filing ↗
2026-08-21Graziosi David S.Option exercise / conversion (M)Common Stock26,708USD 38.11USD 1,017,842SEC filing ↗
2026-08-11Scroggins Eric C.Sale (S)Common Stock1,050USD 125.00USD 131,250SEC filing ↗
2026-08-10Bohley G FrederickSale (S)Common Stock3,961USD 122.38USD 484,747SEC filing ↗
2026-08-10Bohley G FrederickOption exercise / conversion (M)Common Stock3,961USD 37.11USD 146,993SEC filing ↗
2026-06-04Bohley G FrederickOption exercise / conversion (M)Common Stock543USD —USD —SEC filing ↗
2026-06-04Bohley G FrederickTax withholding (F)Common Stock242USD 118.38USD 28,648SEC filing ↗
2026-05-08Mell Scott ASale (S)Common Stock2,270USD 125.00USD 283,750SEC filing ↗
2026-05-08Mell Scott AOption exercise / conversion (M)Common Stock1,337USD 89.41USD 119,541SEC filing ↗
2026-05-06Shivram KrishnaOption exercise / conversion (M)Common Stock1,586USD 0.00USD 0SEC filing ↗
2026-05-06Perna GustaveOption exercise / conversion (M)Common Stock1,586USD 0.00USD 0SEC filing ↗
2026-05-06Ostojic SashaOption exercise / conversion (M)Common Stock1,586USD 0.00USD 0SEC filing ↗
2026-05-06Christman Philip JOption exercise / conversion (M)Common Stock1,586USD 0.00USD 0SEC filing ↗
2026-05-06Christman Philip JAward / grant (A)Common Stock92USD 0.00USD 0SEC filing ↗
2026-05-06BARBOUR D. SCOTTOption exercise / conversion (M)Common Stock1,586USD 0.00USD 0SEC filing ↗
2026-05-06BARBOUR D. SCOTTAward / grant (A)Common Stock92USD 0.00USD 0SEC filing ↗
2026-04-14Mell Scott AOption exercise / conversion (M)Common Stock2,865USD —USD —SEC filing ↗
2026-04-14Mell Scott ATax withholding (F)Common Stock879USD 128.26USD 112,741SEC filing ↗
2026-03-09Scroggins Eric C.Sale (S)Common Stock1,313USD 114.40USD 150,207SEC filing ↗
2026-02-28Scroggins Eric C.Option exercise / conversion (M)Common Stock5,448USD —USD —SEC filing ↗
2026-02-28Scroggins Eric C.Tax withholding (F)Common Stock1,598USD 125.30USD 200,229SEC filing ↗
2026-02-28Graziosi David S.Option exercise / conversion (M)Common Stock78,893USD —USD —SEC filing ↗
2026-02-28Graziosi David S.Tax withholding (F)Common Stock34,713USD 125.30USD 4,349,539SEC filing ↗
2026-02-28Bohley G FrederickOption exercise / conversion (M)Common Stock17,101USD —USD —SEC filing ↗
2026-02-28Bohley G FrederickTax withholding (F)Common Stock7,580USD 125.30USD 949,774SEC filing ↗
2026-02-22Scroggins Eric C.Option exercise / conversion (M)Common Stock963USD —USD —SEC filing ↗
2026-02-22Scroggins Eric C.Tax withholding (F)Common Stock283USD 118.85USD 33,635SEC filing ↗
2026-02-22Graziosi David S.Option exercise / conversion (M)Common Stock24,693USD —USD —SEC filing ↗
2026-02-22Graziosi David S.Tax withholding (F)Common Stock10,502USD 118.85USD 1,248,163SEC filing ↗
2026-02-22Bohley G FrederickOption exercise / conversion (M)Common Stock3,028USD —USD —SEC 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 · —
TickerALSN
CIK0001411207
SectorConsumer Cyclical
IndustryAuto Parts Yahoo Finance
SEC SIC3714 Motor Vehicle Parts & Accessories
ExchangeNYSE

Data coverage

Local Form 4 history699 transaction lines from 2020-02-10 to 2026-08-21
5 P purchase lines · 94 S sale lines · 600 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.