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

FASTENAL CO

FAST · Nasdaq · CIK 0000815556 · Consumer Cyclical · Industrial Distribution

INSIDER SIGNAL

No active buy signal

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

14 Form 4 transaction lines observed in the same window
6 sales · 8 option, withholding, award, gift or other lines

Last qualifying purchase2025-11-19 · Nielsen Sarah N · $39.6K

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
Ancius Michael JDirector
○○▼○▼○
Papenfuss Donnalee KathleenEVP-Strategy and Communication
○▼
Heise Rita J.Director
○▼
● 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: 2025-11-19 · Nielsen Sarah N.

Recent Form 4 activity

5Purchases
8Sales
12Other Form 4 lines
15SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING6 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 has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

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

Shares short
34,618,329
Previous report
35,653,332
Avg daily volume
7,533,208
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
2025-11-19Nielsen Sarah NPurchase (P)Common Stock1,000USD 39.60USD 39,600SEC filing ↗
2025-11-17Johnson Daniel L.Purchase (P)Common Stock1,000USD 40.44USD 40,440SEC filing ↗
2025-11-13HSU Hsenghung SamPurchase (P)Common Stock1,000USD 40.58USD 40,580SEC filing ↗
2025-11-13HSU Hsenghung SamPurchase (P)Common Stock1,000USD 49.58USD 49,580SEC filing ↗
2025-11-12Eastman Stephen L.Purchase (P)Common Stock1,000USD 40.82USD 40,820SEC filing ↗
2025-10-16HSU Hsenghung SamPurchase (P)Common Stock1,000USD 42.45USD 42,450SEC filing ↗
2025-04-14Miller Charles S.Purchase (P)Common Stock20USD 81.45USD 1,629SEC filing ↗
2025-04-14Miller Charles S.Purchase (P)Common Stock20USD 39.15USD 783SEC filing ↗
2025-04-07Miller Charles S.Purchase (P)Common Stock20USD 73.61USD 1,472SEC filing ↗
2025-04-07Miller Charles S.Purchase (P)Common Stock20USD 39.15USD 783SEC filing ↗
2024-06-11HSU Hsenghung SamPurchase (P)Common Stock500USD 62.95USD 31,475SEC filing ↗
2024-06-10HSU Hsenghung SamPurchase (P)Common Stock500USD 63.28USD 31,640SEC filing ↗
2024-04-17Johnson Daniel L.Purchase (P)Common Stock3,350USD 68.38USD 229,073SEC filing ↗
2023-07-17Ancius Michael JPurchase (P)Common Stock500USD 57.53USD 28,765SEC filing ↗
2022-11-29Watts Jeffery MichaelPurchase (P)Common Stock5,940USD 50.58USD 300,445SEC filing ↗

Form 4 evidence

25 transaction lines in the latest 365-day window; 473 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-13Papenfuss Donnalee KathleenSale (S)Common Stock9,258USD 51.39USD 475,731SEC filing ↗
2026-08-13Papenfuss Donnalee KathleenOption exercise / conversion (M)Common Stock9,258USD 18.23USD 168,741SEC filing ↗
2026-08-13Ancius Michael JGift (G)Common Stock400USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (21 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-13Papenfuss Donnalee KathleenSale (S)Common Stock9,258USD 51.39USD 475,731SEC filing ↗
2026-08-13Papenfuss Donnalee KathleenOption exercise / conversion (M)Common Stock9,258USD 18.23USD 168,741SEC filing ↗
2026-08-13Ancius Michael JGift (G)Common Stock400USD 0.00USD 0SEC filing ↗
2026-08-10Ancius Michael JSale (S)Common Stock3,000USD 52.00USD 156,000SEC filing ↗
2026-08-10Ancius Michael JOption exercise / conversion (M)Common Stock3,000USD 13.75USD 41,250SEC filing ↗
2026-08-05Heise Rita J.Sale (S)Common Stock34,964USD 50.05USD 1,749,948SEC filing ↗
2026-08-05Heise Rita J.Option exercise / conversion (M)Common Stock34,964USD 17.28USD 604,316SEC filing ↗
2026-07-28Ancius Michael JSale (S)Common Stock3,000USD 49.00USD 147,000SEC filing ↗
2026-07-28Ancius Michael JOption exercise / conversion (M)Common Stock3,000USD 13.75USD 41,250SEC filing ↗
2026-04-24Ancius Michael JOption exercise / conversion (M)Common Stock1,000USD 44.90USD 44,900SEC filing ↗
2026-03-05Wisecup Reyne KSale (S)Common Stock36,920USD 47.34USD 1,747,793SEC filing ↗
2026-03-05Wisecup Reyne KOption exercise / conversion (M)Common Stock36,920USD 13.00USD 479,960SEC filing ↗
2026-01-23SATTERLEE SCOTTSale (S)Common Stock15,964USD 44.19USD 705,449SEC filing ↗
2026-01-23SATTERLEE SCOTTOption exercise / conversion (M)Common Stock15,964USD 19.00USD 303,316SEC filing ↗
2025-12-12Ancius Michael JOption exercise / conversion (M)Common Stock1,500USD 42.01USD 63,015SEC filing ↗
2025-11-19Nielsen Sarah NPurchase (P)Common Stock1,000USD 39.60USD 39,600SEC filing ↗
2025-11-18Ancius Michael JOption exercise / conversion (M)Common Stock2,000USD 39.96USD 79,920SEC filing ↗
2025-11-17Johnson Daniel L.Purchase (P)Common Stock1,000USD 40.44USD 40,440SEC filing ↗
2025-11-13HSU Hsenghung SamPurchase (P)Common Stock1,000USD 40.58USD 40,580SEC filing ↗
2025-11-13HSU Hsenghung SamPurchase (P)Common Stock1,000USD 49.58USD 49,580SEC filing ↗
2025-11-12Eastman Stephen L.Purchase (P)Common Stock1,000USD 40.82USD 40,820SEC 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 · —
TickerFAST
CIK0000815556
SectorConsumer Cyclical
IndustryIndustrial Distribution Yahoo Finance
SEC SIC5200 Retail-Building Materials, Hardware, Garden Supply
ExchangeNasdaq

Data coverage

Local Form 4 history473 transaction lines from 2020-01-23 to 2026-08-13
75 P purchase lines · 174 S sale lines · 224 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.