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

TENNANT CO

TNC · NYSE · CIK 0000097134 · Industrials · Specialty Industrial Machinery

INSIDER SIGNAL

59.6 / 100

3 buyers · 3 purchase transaction lines · $849.2K gross purchase

WHY THIS SIGNAL?

Buyer breadthModerate
Purchase sizeModerate
RoleStrong
RecencyLow
ConvictionLow
Score anatomy

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

Cluster+21.0 / 35
Purchase size+11.2 / 25
Role+20.0 / 20
Recency+4.5 / 10
Conviction+2.9 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 3 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Buying conviction is reduced by concurrent selling
  • ✓ 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
Zay Richard H.CHIEF COMMERCIAL OFFICER
▼○
ALLEN PATRICK EDirector
○●
Morse Timothy R.Director
○●
Mulligan Donal LDirector
○●
Arvani AzitaDirector
○
EICHER CAROL SDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS3
PURCHASE CONCENTRATION63%Largest buyer: Mulligan Donal L · $538.7K
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-08-12–2026-08-12

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

SIGNAL HISTORY

59.6 / 100

Latest recorded score

↓ -0.2 ptsversus the previous recorded snapshot
  1. 60.1
  2. 60.0
  3. 59.9
  4. 59.8
  5. 59.6

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

Recent Form 4 activity

9Purchases
4Sales
46Other Form 4 lines
37SEC filings · 365 days
BUYING3 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER12 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot detected in parsed evidence

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
-4.4%
3M
-22.7%
6M
-14.9%
12M
-19.5%

Volatility & liquidity

Volatility
34.4%
Beta
—
Avg daily value
USD 13.1M

Valuation

Market cap
USD 1.1B
P/E
25.7×

Fundamentals

Profit margin
3.6%
ROE
7.3%
Industry
Specialty Industrial Machinery

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: 2026-07-31 · Status: PASS

Short interest

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

Shares short
1,340,169
Previous report
1,317,091
Avg daily volume
178,270
Days to cover
7.5

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
2026-08-31ALLEN PATRICK EPurchase (P)Common Stock3,000USD 69.42USD 208,260SEC filing ↗
2026-08-12Mulligan Donal LPurchase (P)Common Stock8,000USD 67.34USD 538,720SEC filing ↗
2026-08-12Morse Timothy R.Purchase (P)Common Stock1,500USD 68.18USD 102,270SEC filing ↗
2026-03-02Glerum James T Jr.Purchase (P)Common Stock8,163USD 61.25USD 499,984SEC filing ↗
2026-02-27Mulligan Donal LPurchase (P)Common Stock3,000USD 61.61USD 184,830SEC filing ↗
2026-02-26Mulligan Donal LPurchase (P)Common Stock5,000USD 63.86USD 319,300SEC filing ↗
2026-02-26Huml David W.Purchase (P)Common Stock4,000USD 64.39USD 257,548SEC filing ↗

Form 4 evidence

59 transaction lines in the latest 365-day window; 389 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31ALLEN PATRICK EPurchase (P)Common Stock3,000USD 69.42USD 208,260SEC filing ↗
2026-08-12Mulligan Donal LPurchase (P)Common Stock8,000USD 67.34USD 538,720SEC filing ↗
2026-08-12Morse Timothy R.Purchase (P)Common Stock1,500USD 68.18USD 102,270SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31ALLEN PATRICK EPurchase (P)Common Stock3,000USD 69.42USD 208,260SEC filing ↗
2026-08-12Mulligan Donal LPurchase (P)Common Stock8,000USD 67.34USD 538,720SEC filing ↗
2026-08-12Morse Timothy R.Purchase (P)Common Stock1,500USD 68.18USD 102,270SEC filing ↗
2026-08-10Zay Richard H.Award / grant (A)Common Stock2,707USD 0.00USD 0SEC filing ↗
2026-08-10Schottler Patrick W.Award / grant (A)Common Stock2,707USD 0.00USD 0SEC filing ↗
2026-05-07Zay Richard H.Sale (S)Common Stock6,875USD 88.02USD 605,138SEC filing ↗
2026-05-07Windley DavidAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07SHEAHAN MARK WAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07Mulligan Donal LAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07Morse Timothy R.Award / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07Hider Andrew P.Award / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07Glerum James T Jr.Award / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07GREEN MARIA CAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07EICHER CAROL SAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07Arvani AzitaAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-05-07ALLEN PATRICK EAward / grant (A)Common Stock1,490USD 0.00USD 0SEC filing ↗
2026-04-14Mulligan Donal LOption exercise / conversion (M)Common Stock3,538USD 54.70USD 193,529SEC filing ↗
2026-04-14Mulligan Donal LTax withholding (F)Common Stock2,456USD 78.81USD 193,557SEC filing ↗
2026-03-06Huml David W.Gift (G)Common Stock26,755USD 0.00USD 0SEC filing ↗
2026-03-02Glerum James T Jr.Purchase (P)Common Stock8,163USD 61.25USD 499,984SEC filing ↗
2026-02-28Zay Richard H.Tax withholding (F)Common Stock840USD 61.03USD 51,265SEC filing ↗
2026-02-28West FayTax withholding (F)Common Stock945USD 61.03USD 57,673SEC filing ↗
2026-02-28Schottler Patrick W.Tax withholding (F)Common Stock194USD 61.03USD 11,840SEC filing ↗
2026-02-28Huml David W.Tax withholding (F)Common Stock4,268USD 61.03USD 260,476SEC filing ↗
2026-02-28ERICKSON KRISTIN A.Tax withholding (F)Common Stock514USD 61.03USD 31,369SEC filing ↗
2026-02-28Balinski BarbTax withholding (F)Common Stock451USD 61.03USD 27,525SEC filing ↗
2026-02-27Mulligan Donal LPurchase (P)Common Stock3,000USD 61.61USD 184,830SEC filing ↗
2026-02-27Arvani AzitaSale (S)Common Stock3,156USD 61.40USD 193,778SEC filing ↗
2026-02-27Arvani AzitaOption exercise / conversion (M)Common Stock3,538USD 54.70USD 193,529SEC filing ↗
2026-02-26Zay Richard H.Tax withholding (F)Common Stock3,269USD 62.73USD 205,064SEC 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 · —
TickerTNC
CIK0000097134
SectorIndustrials
IndustrySpecialty Industrial Machinery Yahoo Finance
SEC SIC3580 Refrigeration & Service Industry Machinery
ExchangeNYSE

Data coverage

Local Form 4 history389 transaction lines from 2020-01-02 to 2026-08-31
9 P purchase lines · 70 S sale lines · 310 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.