Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

Cardinal Infrastructure Group Inc.

CDNL · Nasdaq · CIK 0002079999 · Industrials · Engineering & Construction

INSIDER SIGNAL

84.3 / 100

7 buyers · 18 purchase transaction lines · $9.6M gross purchase

WHY THIS SIGNAL?

Buyer breadthStrong
Purchase sizeStrong
RoleModerate
RecencyLow
ConvictionStrong
Score anatomy

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

Cluster+35.0 / 35
Purchase size+22.8 / 25
Role+13.0 / 20
Recency+3.5 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Role scores low · most senior buyer: Chief Executive Officer (CEO, chair and 10% owners score lowest)
  • ⚠ Purchase activity is becoming less recent
  • ✓ Cluster breadth is broad · 4+ insiders

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.

Purchase breadth & concentration

QUALIFYING BUYERS7
PURCHASE CONCENTRATION33%Largest buyer: Spivey Jeremy Simmons · $3.2M
CLUSTER BUYING · 15D7 insidersPeak activity: 2026-08-14–2026-08-17

Roles in the peak window: Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Director. Concentration uses priced qualifying P lines only and does not change the saved score.

Insider activity timeline

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

AprMayJunJulAugSepOct
Lee Richard Melvin Jr.Director
○○●
Zelman IvyDirector
○○●
Wimmer Richard BennettDirector
○○●
SHANFELTER AUSTIN JDirector
○○
Wood BenjaminCHIEF OPERATING OFFICER
●●
Rowe Michael Bruce Jr.Chief Financial Officer
●
● Purchase▼ Sale○ Other

Showing the six most active owners; 2 additional owner(s) remain in Form 4 evidence.

SIGNAL HISTORY

84.3 / 100

Latest recorded score

→ +0.0 ptsversus the previous recorded snapshot
  1. 84.6
  2. 84.5
  3. 84.5
  4. 84.3
  5. 84.3

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

Recent Form 4 activity

23Purchases
0Sales
20Other Form 4 lines
24SEC filings · 365 days
BUYING18 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER8 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
-38.1%
3M
-67.4%
6M
-53.7%
12M
—

Volatility & liquidity

Volatility
98.6%
Beta
—
Avg daily value
USD 15.4M

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
5.0%
ROE
38.8%
Industry
Engineering & Construction

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (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
2,574,117
Previous report
2,578,274
Avg daily volume
746,632
Days to cover
3.5

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
2026-08-17Wimmer Richard BennettPurchase (P)Class A Common Stock7,500USD 39.13USD 293,475SEC filing ↗
2026-08-14Zelman IvyPurchase (P)Class A Common Stock12,647USD 39.61USD 500,948SEC filing ↗
2026-08-14Wood BenjaminPurchase (P)Class A Common Stock25,700USD 39.48USD 1,014,594SEC filing ↗
2026-08-14Wood Anthony Leon Jr.Purchase (P)Class A Common Stock51,400USD 39.36USD 2,023,079SEC filing ↗
2026-08-14Spivey Jeremy SimmonsPurchase (P)Class A Common Stock83,350USD 38.41USD 3,201,428SEC filing ↗
2026-08-14Rowe Michael Bruce Jr.Purchase (P)Class A Common Stock7,000USD 36.53USD 255,710SEC filing ↗
2026-08-14Lee Richard Melvin Jr.Purchase (P)Class A Common Stock34,000USD 36.82USD 1,252,040SEC filing ↗
2026-05-27Wood BenjaminPurchase (P)Class A Common Stock20,000USD 51.30USD 1,025,900SEC filing ↗
2026-03-26Zelman IvyPurchase (P)Class A Common Stock6,921USD 36.33USD 251,440SEC filing ↗
2025-12-11Zelman IvyPurchase (P)Class A Common Stock2,275USD 21.00USD 47,775SEC filing ↗
2025-12-11Wimmer Richard BennettPurchase (P)Class A Common Stock10,000USD 21.00USD 210,000SEC filing ↗
2025-12-11Lee Richard Melvin Jr.Purchase (P)Class A Common Stock22,725USD 21.00USD 477,225SEC filing ↗
2025-12-11Gidley Tiffany LeannPurchase (P)Class A Common Stock6,000USD 21.00USD 126,000SEC filing ↗

Form 4 evidence

43 transaction lines in the latest 365-day window; 43 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-17Wimmer Richard BennettPurchase (P)Class A Common Stock7,500USD 39.13USD 293,475SEC filing ↗
2026-08-14Zelman IvyPurchase (P)Class A Common Stock12,647USD 39.61USD 500,948SEC filing ↗
2026-08-14Wood BenjaminPurchase (P)Class A Common Stock25,700USD 39.48USD 1,014,594SEC filing ↗
Show recent Form 4 evidence (27 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-17Wimmer Richard BennettPurchase (P)Class A Common Stock7,500USD 39.13USD 293,475SEC filing ↗
2026-08-14Zelman IvyPurchase (P)Class A Common Stock12,647USD 39.61USD 500,948SEC filing ↗
2026-08-14Wood BenjaminPurchase (P)Class A Common Stock25,700USD 39.48USD 1,014,594SEC filing ↗
2026-08-14Wood Anthony Leon Jr.Purchase (P)Class A Common Stock51,400USD 39.36USD 2,023,079SEC filing ↗
2026-08-14Spivey Jeremy SimmonsPurchase (P)Class A Common Stock83,350USD 38.41USD 3,201,428SEC filing ↗
2026-08-14Rowe Michael Bruce Jr.Purchase (P)Class A Common Stock7,000USD 36.53USD 255,710SEC filing ↗
2026-08-14Lee Richard Melvin Jr.Purchase (P)Class A Common Stock34,000USD 36.82USD 1,252,040SEC filing ↗
2026-06-05Zelman IvyAward / grant (A)Class A Common Stock1,817USD 0.00USD 0SEC filing ↗
2026-06-05Wimmer Richard BennettAward / grant (A)Class A Common Stock2,023USD 0.00USD 0SEC filing ↗
2026-06-05SHANFELTER AUSTIN JAward / grant (A)Class A Common Stock1,941USD 0.00USD 0SEC filing ↗
2026-06-05Lee Richard Melvin Jr.Award / grant (A)Class A Common Stock1,941USD 0.00USD 0SEC filing ↗
2026-05-27Wood BenjaminPurchase (P)Class A Common Stock20,000USD 51.30USD 1,025,900SEC filing ↗
2026-05-07Zelman IvyAward / grant (A)Class A Common Stock3,101USD 24.18USD 74,982SEC filing ↗
2026-05-07Wimmer Richard BennettAward / grant (A)Class A Common Stock3,101USD 24.18USD 74,982SEC filing ↗
2026-05-07SHANFELTER AUSTIN JAward / grant (A)Class A Common Stock3,101USD 24.18USD 74,982SEC filing ↗
2026-05-07Lee Richard Melvin Jr.Award / grant (A)Class A Common Stock3,101USD 24.18USD 74,982SEC filing ↗
2026-03-26Zelman IvyPurchase (P)Class A Common Stock6,921USD 36.33USD 251,440SEC filing ↗
2025-12-11Zelman IvyPurchase (P)Class A Common Stock2,275USD 21.00USD 47,775SEC filing ↗
2025-12-11Wimmer Richard BennettPurchase (P)Class A Common Stock10,000USD 21.00USD 210,000SEC filing ↗
2025-12-11West Erik DanielD (D)Class B Common Stock1,983,928USD —USD —SEC filing ↗
2025-12-11Spivey Jeremy SimmonsD (D)Class B Common Stock3,968,456USD —USD —SEC filing ↗
2025-12-11Rowe Michael Bruce Jr.D (D)Class B Common Stock661,309USD —USD —SEC filing ↗
2025-12-11Lee Richard Melvin Jr.Purchase (P)Class A Common Stock22,725USD 21.00USD 477,225SEC filing ↗
2025-12-11Gidley Tiffany LeannPurchase (P)Class A Common Stock6,000USD 21.00USD 126,000SEC filing ↗
2025-12-09West Erik DanielAward / grant (A)Class B Common Stock8,097,937USD —USD —SEC filing ↗
2025-12-09Spivey Jeremy SimmonsAward / grant (A)Class B Common Stock16,198,304USD —USD —SEC filing ↗
2025-12-09Rowe Michael Bruce Jr.Award / grant (A)Class B Common Stock2,699,312USD —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 date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerCDNL
CIK0002079999
SectorIndustrials
IndustryEngineering & Construction Yahoo Finance
SEC SIC1600 Heavy Construction Other Than Bldg Const - Contractors
ExchangeNasdaq

Data coverage

Local Form 4 history43 transaction lines from 2025-12-09 to 2026-08-17
23 P purchase lines · 0 S sale lines · 20 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.