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

BERKLEY W R CORP

WRB · NYSE · CIK 0000011544 · Financial Services · Insurance—Property & Casualty

INSIDER SIGNAL

No active buy signal

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

18 Form 4 transaction lines observed in the same window
0 sales · 18 option, withholding, award, gift or other lines

Last qualifying purchase2026-03-03 · MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc. · $8.1M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
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 & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

Insider activity timeline

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

AprMayJunJulAugSepOct
BERKLEY WILLIAM R JRPresident and CEO
○○○
Welt Philip SEVP & Secretary
○○
Baio Richard MarkEVP & CFO
○○
SHIEL JAMES GEVP - Investments
○○
BERKLEY WILLIAM RExecutive Chairman
○
Ferre Maria LuisaDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 7 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: 2026-03-03 · MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc..

Recent Form 4 activity

94Purchases
0Sales
19Other Form 4 lines
35SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER18 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
13,102,697
Previous report
15,456,413
Avg daily volume
4,637,999
Days to cover
2.8

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
2026-03-03MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock112,176USD 72.20USD 8,099,132SEC filing ↗
2026-03-02MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock146,000USD 72.92USD 10,646,156SEC filing ↗
2026-02-27MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock147,000USD 71.63USD 10,529,610SEC filing ↗
2026-02-26MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock153,000USD 71.67USD 10,965,904SEC filing ↗
2026-02-25MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock168,868USD 71.42USD 12,060,942SEC filing ↗
2026-02-24MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock164,786USD 70.80USD 11,667,520SEC filing ↗
2026-02-23MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock220,000USD 71.14USD 15,651,451SEC filing ↗
2026-02-20MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock160,582USD 70.80USD 11,369,206SEC filing ↗
2026-02-19MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock345,000USD 70.65USD 24,375,544SEC filing ↗
2026-02-18MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock285,000USD 70.64USD 20,132,495SEC filing ↗
2026-02-17MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock281,386USD 71.19USD 20,031,869SEC filing ↗
2026-02-13MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock20,000USD 69.87USD 1,397,465SEC filing ↗
2026-02-12MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock20,000USD 71.99USD 1,439,713SEC filing ↗
2026-02-11MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock24,030USD 70.59USD 1,696,267SEC filing ↗
2026-02-10MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock33,966USD 69.39USD 2,356,739SEC filing ↗

Form 4 evidence

113 transaction lines in the latest 365-day window; 286 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-03Welt Philip STax withholding (F)Common Stock592USD 72.29USD 42,796SEC filing ↗
2026-08-03Welt Philip SAward / grant (A)Common Stock14,086USD 0.00USD 0SEC filing ↗
2026-08-03SHIEL JAMES GTax withholding (F)Common Stock650USD 72.29USD 46,989SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-03Welt Philip STax withholding (F)Common Stock592USD 72.29USD 42,796SEC filing ↗
2026-08-03Welt Philip SAward / grant (A)Common Stock14,086USD 0.00USD 0SEC filing ↗
2026-08-03SHIEL JAMES GTax withholding (F)Common Stock650USD 72.29USD 46,989SEC filing ↗
2026-08-03SHIEL JAMES GAward / grant (A)Common Stock14,086USD 0.00USD 0SEC filing ↗
2026-08-03Baio Richard MarkTax withholding (F)Common Stock650USD 72.29USD 46,989SEC filing ↗
2026-08-03Baio Richard MarkAward / grant (A)Common Stock14,086USD 0.00USD 0SEC filing ↗
2026-08-03BERKLEY WILLIAM R JRTax withholding (F)Common Stock4,139USD 72.29USD 299,208SEC filing ↗
2026-08-03BERKLEY WILLIAM R JRAward / grant (A)Common Stock98,593USD 0.00USD 0SEC filing ↗
2026-06-03Talisman JonathanAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03Rusbuldt Robert AlanAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03Mosley Daniel LynnAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03Mattson Marie AngelaAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03Ferre Maria LuisaAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03Farrell Mary CAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03BLAYLOCK RONALD EAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03BERKLEY WILLIAM R JRAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03BERKLEY WILLIAM RAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-06-03Augostini Christopher LAward / grant (A)Common Stock3,090USD 0.00USD 0SEC filing ↗
2026-03-03MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock112,176USD 72.20USD 8,099,132SEC filing ↗
2026-03-02MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock146,000USD 72.92USD 10,646,156SEC filing ↗
2026-02-27MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock147,000USD 71.63USD 10,529,610SEC filing ↗
2026-02-26MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock153,000USD 71.67USD 10,965,904SEC filing ↗
2026-02-25MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock168,868USD 71.42USD 12,060,942SEC filing ↗
2026-02-24MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock164,786USD 70.80USD 11,667,520SEC filing ↗
2026-02-23MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock220,000USD 71.14USD 15,651,451SEC filing ↗
2026-02-20MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock160,582USD 70.80USD 11,369,206SEC filing ↗
2026-02-19MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock345,000USD 70.65USD 24,375,544SEC filing ↗
2026-02-18MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock285,000USD 70.64USD 20,132,495SEC filing ↗
2026-02-17MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock281,386USD 71.19USD 20,031,869SEC filing ↗
2026-02-13MITSUI SUMITOMO INSURANCE CO LTD; MS&AD Insurance Group Holdings, Inc.Purchase (P)Common Stock20,000USD 69.87USD 1,397,465SEC 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 · —
TickerWRB
CIK0000011544
SectorFinancial Services
IndustryInsurance—Property & Casualty Yahoo Finance
SEC SIC6331 Fire, Marine & Casualty Insurance
ExchangeNYSE

Data coverage

Local Form 4 history286 transaction lines from 2020-03-12 to 2026-08-03
98 P purchase lines · 1 S sale lines · 187 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.