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

Karman Holdings Inc.

KRMN · NYSE · CIK 0002040127 · Industrials · Aerospace & Defense

INSIDER SIGNAL

74.6 / 100

3 buyers · 3 purchase transaction lines · $1.0M gross purchase

WHY THIS SIGNAL?

Buyer breadthModerate
Purchase sizeModerate
RoleStrong
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+21.0 / 35
Purchase size+17.7 / 25
Role+20.0 / 20
Recency+5.9 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 3 insider(s), not 4+
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

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

AprMayJunJulAugSepOct
Petryszyn Mary DDirector
○○●
Twitty StephenDirector
○●
Stinnett DavidDirector
○●
Sawhill StephanieFormer Chief Growth Officer
○
Willis MichaelChief Financial Officer
○
RAMBEAU JONChief Executive Officer
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 7 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS3
PURCHASE CONCENTRATION97%Largest buyer: Stinnett David · $1.0M
CLUSTER BUYING · 15D3 insidersPeak activity: 2026-09-16–2026-09-16

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

74.6 / 100

Latest recorded score

↓ -0.1 ptsversus the previous recorded snapshot
  1. 75.1
  2. 75.0
  3. 74.9
  4. 74.7
  5. 74.6

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

3Purchases
8Sales
14Other Form 4 lines
25SEC filings · 365 days
BUYING3 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER14 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
-5.2%
3M
-27.8%
6M
-60.5%
12M
-57.5%

Volatility & liquidity

Volatility
68.7%
Beta
—
Avg daily value
USD 115.0M

Valuation

Market cap
USD 4.3B
P/E
248.7×

Fundamentals

Profit margin
3.7%
ROE
4.5%
Industry
Aerospace & Defense

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-03 · Status: PASS

Short interest

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

Shares short
15,897,898
Previous report
14,111,884
Avg daily volume
4,754,337
Days to cover
3.3

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
2026-09-16Twitty StephenPurchase (P)Common Stock275USD 36.79USD 10,117SEC filing ↗
2026-09-16Stinnett DavidPurchase (P)Common Stock27,000USD 37.32USD 1,007,640SEC filing ↗
2026-09-16Petryszyn Mary DPurchase (P)Common Stock500USD 37.44USD 18,720SEC filing ↗

Form 4 evidence

25 transaction lines in the latest 365-day window; 41 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-16Twitty StephenPurchase (P)Common Stock275USD 36.79USD 10,117SEC filing ↗
2026-09-16Stinnett DavidPurchase (P)Common Stock27,000USD 37.32USD 1,007,640SEC filing ↗
2026-09-16Petryszyn Mary DPurchase (P)Common Stock500USD 37.44USD 18,720SEC filing ↗
Show recent Form 4 evidence (25 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-16Twitty StephenPurchase (P)Common Stock275USD 36.79USD 10,117SEC filing ↗
2026-09-16Stinnett DavidPurchase (P)Common Stock27,000USD 37.32USD 1,007,640SEC filing ↗
2026-09-16Petryszyn Mary DPurchase (P)Common Stock500USD 37.44USD 18,720SEC filing ↗
2026-09-14Boynton Chris MichaelAward / grant (A)Common Stock11,358USD 0.00USD 0SEC filing ↗
2026-05-21Petryszyn Mary DAward / grant (A)Common Stock2,363USD 0.00USD 0SEC filing ↗
2026-05-21Willis MichaelAward / grant (A)Common Stock689USD 0.00USD 0SEC filing ↗
2026-05-21Twitty StephenAward / grant (A)Common Stock2,363USD 0.00USD 0SEC filing ↗
2026-05-21Stinnett DavidAward / grant (A)Common Stock1,962USD 0.00USD 0SEC filing ↗
2026-05-21Sawhill StephanieAward / grant (A)Common Stock689USD 0.00USD 0SEC filing ↗
2026-05-21Raduenz BrianAward / grant (A)Common Stock2,363USD 0.00USD 0SEC filing ↗
2026-05-21RAMBEAU JONAward / grant (A)Common Stock99,937USD 0.00USD 0SEC filing ↗
2026-05-21Petryszyn Mary DAward / grant (A)Common Stock2,294USD 0.00USD 0SEC filing ↗
2026-05-21Laurendeau DougAward / grant (A)Common Stock10,864USD 0.00USD 0SEC filing ↗
2026-05-21Koblinski AnthonyAward / grant (A)Common Stock1,149USD 0.00USD 0SEC filing ↗
2026-05-21Hamilton JohnAward / grant (A)Common Stock1,962USD 0.00USD 0SEC filing ↗
2026-05-21Beaudoin JonathanAward / grant (A)Common Stock689USD 0.00USD 0SEC filing ↗
2026-05-21Alty MatthewAward / grant (A)Common Stock2,363USD 0.00USD 0SEC filing ↗
2025-12-12Koblinski AnthonySale (S)Common Stock75,000USD 69.31USD 5,198,250SEC filing ↗
2025-12-05Koblinski AnthonySale (S)Common Stock75,000USD 66.51USD 4,988,250SEC filing ↗
2025-11-28Koblinski AnthonySale (S)Common Stock75,000USD 67.40USD 5,055,000SEC filing ↗
2025-11-21Koblinski AnthonySale (S)Common Stock75,000USD 58.48USD 4,386,000SEC filing ↗
2025-11-17Willis MichaelSale (S)Common Stock115,000USD 58.63USD 6,742,450SEC filing ↗
2025-11-13Sawhill StephanieSale (S)Common Stock62,000USD 63.93USD 3,963,660SEC filing ↗
2025-11-13Beaudoin JonathanSale (S)Common Stock74,000USD 63.69USD 4,713,060SEC filing ↗
2025-11-12Raduenz BrianSale (S)Common Stock90,000USD 68.00USD 6,120,000SEC 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 · —
TickerKRMN
CIK0002040127
SectorIndustrials
IndustryAerospace & Defense Yahoo Finance
SEC SIC3728 Aircraft Parts & Auxiliary Equipment, NEC
ExchangeNYSE

Data coverage

Local Form 4 history41 transaction lines from 2025-02-14 to 2026-09-16
3 P purchase lines · 21 S sale lines · 17 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.