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

UNITED STATES LIME & MINERALS INC

USLM · Nasdaq · CIK 0000082020 · Basic Materials · Building Materials

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

7 Form 4 transaction lines observed in the same window
1 sales · 5 option, withholding, award, gift or other lines

Last qualifying purchase2026-09-09 · Candou Holdings Ltd. · $2.2M

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
Recent salesLow
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.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Candou Holdings Ltd. · $2.2M
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-09-09–2026-09-09

Roles in the peak window: TenPercentOwner. 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
Hawkins Tom S JrDirector
○
Wolkenstein Jon ADirector
○
Weirich Lila RDirector
○
Duhe Sandra CDirector
○
CARDIN RICHARD WDirector
○
DOUMET ANTOINE MDirector
▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

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: 2026-09-09 · Candou Holdings Ltd..

Recent Form 4 activity

1Purchases
2Sales
22Other Form 4 lines
15SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER5 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
1,135,400
Previous report
1,013,148
Avg daily volume
168,925
Days to cover
6.7

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
2026-09-09Candou Holdings Ltd.Purchase (P)USLM Common Stock20,000USD 110.00USD 2,200,000SEC filing ↗
2023-11-09Stone Timothy WadePurchase (P)USLM Common Stock200USD 200.00USD 40,000SEC filing ↗
2023-09-15Stone Timothy WadePurchase (P)USLM Common Stock0USD 213.66USD 47SEC filing ↗
2023-09-15Duhe Sandra CPurchase (P)USLM Common Stock1USD 204.30USD 121SEC filing ↗
2023-06-16Stone Timothy WadePurchase (P)USLM Common Stock0USD 195.99USD 53SEC filing ↗
2023-06-16Duhe Sandra CPurchase (P)USLM Common Stock1USD 204.60USD 121SEC filing ↗
2023-03-17Stone Timothy WadePurchase (P)USLM Common Stock0USD 153.79USD 54SEC filing ↗
2022-12-16Stone Timothy WadePurchase (P)USLM Common Stock0USD 146.11USD 28SEC filing ↗
2022-09-16Stone Timothy WadePurchase (P)USLM Common Stock0USD 105.74USD 27SEC filing ↗
2022-06-17Stone Timothy WadePurchase (P)USLM Common Stock0USD 110.20USD 28SEC filing ↗
2022-03-18Stone Timothy WadePurchase (P)USLM Common Stock0USD 117.02USD 27SEC filing ↗
2021-12-10Stone Timothy WadePurchase (P)USLM Common Stock0USD 122.98USD 1SEC filing ↗
2021-12-10Doumet George Michel; INBERDON ENTERPRISES LTDPurchase (P)USLM common stock24,137USD 122.22USD 2,950,024SEC filing ↗
2021-12-10INBERDON ENTERPRISES LTDPurchase (P)USLM Common Stock24,137USD 122.22USD 2,950,024SEC filing ↗
2021-11-29Doumet George Michel; INBERDON ENTERPRISES LTDPurchase (P)USLM common stock17,500USD 126.00USD 2,205,000SEC filing ↗

Form 4 evidence

25 transaction lines in the latest 365-day window; 306 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-09DOUMET ANTOINE MSale (S)USLM Common Stock20,000USD 110.00USD 2,200,000SEC filing ↗
2026-09-09Candou Holdings Ltd.Purchase (P)USLM Common Stock20,000USD 110.00USD 2,200,000SEC filing ↗
2026-05-01Hawkins Tom S JrAward / grant (A)USLM Common Stock1,273USD 110.00USD 140,030SEC filing ↗
Show recent Form 4 evidence (24 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-09DOUMET ANTOINE MSale (S)USLM Common Stock20,000USD 110.00USD 2,200,000SEC filing ↗
2026-09-09Candou Holdings Ltd.Purchase (P)USLM Common Stock20,000USD 110.00USD 2,200,000SEC filing ↗
2026-05-01Hawkins Tom S JrAward / grant (A)USLM Common Stock1,273USD 110.00USD 140,030SEC filing ↗
2026-05-01Wolkenstein Jon AAward / grant (A)USLM Common Stock1,273USD 110.00USD 140,030SEC filing ↗
2026-05-01Weirich Lila RAward / grant (A)USLM Common Stock1,273USD 110.00USD 140,030SEC filing ↗
2026-05-01Duhe Sandra CAward / grant (A)USLM Common Stock1,273USD 110.00USD 140,030SEC filing ↗
2026-05-01CARDIN RICHARD WAward / grant (A)USLM Common Stock1,273USD 110.00USD 140,030SEC filing ↗
2026-03-17DOUMET ANTOINE MOption exercise / conversion (M)USLM Common Stock12,000USD 10.71USD 128,520SEC filing ↗
2026-03-03Duhe Sandra CSale (S)USLM Common Stock1,277USD 120.45USD 153,815SEC filing ↗
2026-02-03Wiedemer Michael LTax withholding (F)USLM Common Stock165USD 118.13USD 19,491SEC filing ↗
2026-02-03Stone Timothy WadeTax withholding (F)USLM Common Stock136USD 118.13USD 16,066SEC filing ↗
2026-02-03O'Neill NathanTax withholding (F)USLM Common Stock166USD 118.13USD 19,610SEC filing ↗
2026-02-03Gagnon John JTax withholding (F)USLM Common Stock123USD 118.13USD 14,530SEC filing ↗
2026-02-02Wiedemer Michael LTax withholding (F)USLM Common Stock95USD 123.61USD 11,743SEC filing ↗
2026-02-02Wiedemer Michael LAward / grant (A)USLM Common Stock426USD 123.61USD 52,658SEC filing ↗
2026-02-02Stone Timothy WadeTax withholding (F)USLM Common Stock100USD 123.61USD 12,361SEC filing ↗
2026-02-02Stone Timothy WadeAward / grant (A)USLM Common Stock336USD 123.61USD 41,533SEC filing ↗
2026-02-02O'Neill NathanTax withholding (F)USLM Common Stock105USD 123.61USD 12,979SEC filing ↗
2026-02-02O'Neill NathanAward / grant (A)USLM Common Stock426USD 123.61USD 52,658SEC filing ↗
2026-02-02Gagnon John JTax withholding (F)USLM Common Stock75USD 123.61USD 9,271SEC filing ↗
2026-02-02Gagnon John JAward / grant (A)USLM Common Stock210USD 123.61USD 25,958SEC filing ↗
2025-12-31BYRNE TIMOTHY WTax withholding (F)USLM Common Stock18,691USD 119.74USD 2,238,060SEC filing ↗
2025-12-31BYRNE TIMOTHY WAward / grant (A)USLM Common Stock47,500USD 119.74USD 5,687,650SEC filing ↗
2025-12-04Hawkins Tom S JrGift (G)USLM Common Stock180USD 0.00USD 0SEC 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 · —
TickerUSLM
CIK0000082020
SectorBasic Materials
IndustryBuilding Materials Yahoo Finance
SEC SIC1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
ExchangeNasdaq

Data coverage

Local Form 4 history306 transaction lines from 2020-02-03 to 2026-09-09
22 P purchase lines · 120 S sale lines · 164 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.