Stock Trading Canary

Snapshot date: 2026-10-18 · Built: 2026-10-19T15:52:46+00:00 · Publication status: REVIEW

← United States · 中文

COMPANY RESEARCH

MARKEL GROUP INC.

MKL · United States · Financial Services

INSIDER SIGNAL

Insider activity score:51.8 / 100

2 insiders · 3 purchase events · $231k net purchases

US #556 · United States #556

WHY THIS SIGNAL?

Score anatomy

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

Cluster+14.0 / 35

How many distinct insiders bought in the cluster

Purchase size+10.9 / 25

Purchase value relative to company size and liquidity

Role+0.0 / 20

The seniority and relevance of participating insiders

Recency+0.7 / 10

How recently the purchases occurred

Conviction+6.2 / 10

How clearly buying stands out from other activity

What is holding the score back?

  • ⚠ Buyer breadth is moderate · fewer than 4 distinct filers
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Insider role contributes less on the current role scale
  • ⚠ Purchase activity is becoming less recent
  • ⚠ Buying conviction is reduced by concurrent selling

The role contribution follows the US model's seniority ladder.

BUYING PROFILE

3 events · 2 insiders · 180d

Cluster 100%Repeat 0%Independent 0%Large 0%

Percentages are mutually exclusive and sum to 100%.

Buying concentration

72%

Largest buyer:Leopold Diane · 269k USD
Gross qualified purchase transaction-line value:371k USD

The headline $ total is net buying for the screen; this module uses gross qualified purchase transaction-line values in the filing currency, so the amounts can differ. The current 15-day buyer-breadth input counts distinct buyers; value concentration is disclosed separately here.

This is a ranking under the current US screening rules—not a probability of gain, return forecast, or buy recommendation.

Key purchase quotes (filing currency)

FilerPrice per unitTrade date
Leopold Diane1789.19 USDMay 7, 2026
Leopold Diane1792.61 USDMay 6, 2026
Puckett A. Lynne1795.53 USDMay 1, 2026
Model details

Cluster breakdown (does not change the score)

15-day buyer breadth (count)
2 distinct reported filers
Peak time window
2026-05-01 to 2026-05-07
Current breadth input
0.400 (capped at 4+ buyers)
Buyer independence
Not yet measured; related-party fields are not cross-market comparable

What the filings show

Insider vs stock price

3 purchase day(s), 3 purchase line(s) in the 180-day window. 1 sale day(s), 3 sale line(s).

Daily close (USD)Day with an insider purchaseDay with an insider sale
1,7001,8001,9002,000May 2026JunJulAugSepOct2026-05-01 · 1 purchase line(s) · 1 insider(s) · close since that day -1.0%2026-05-06 · 1 purchase line(s) · 1 insider(s) · close since that day -1.4%2026-05-07 · 1 purchase line(s) · 1 insider(s) · close since that day -2.2%2026-05-22 · 3 sale line(s) · close since that day -5.2%1,761last close09 Oct

Markers sit on the closing price of the transaction day. They show when insiders traded, not the price they paid or received. "Since" compares that day's close with the last close shown; it is what happened at this company, not a forecast.

Insider timeline

2 insiders bought within 7 days, 1 May to 7 May: 2 Board member. The share closed at 1,779.36 on the first of those days and at 1,760.74 most recently (−1.0%). That week 96 companies across United States disclosed insider purchases, an ordinary week (18 of the last 26).

Several insiders within 15 days: 2026-05-01 – 2026-05-07Puckett A. LynnePuckett A. LynneDirectorBoard memberLeopold DianeLeopold DianeDirectorBoard memberHarris Greta JHarris Greta JDirectorBoard member2026-05-22 · Harris Greta J · sale · 140,396 USD2026-05-01 · Puckett A. Lynne · purchase · 102,345 USD2026-05-06 · Leopold Diane · purchase · 179,261 USD2026-05-07 · Leopold Diane · purchase · 89,460 USD2026-04-20 to 2026-04-26: 74 companies2026-04-27 to 2026-05-03: 96 companies2026-05-04 to 2026-05-10: 151 companies2026-05-11 to 2026-05-17: 232 companies2026-05-18 to 2026-05-24: 259 companies2026-05-25 to 2026-05-31: 171 companies2026-06-01 to 2026-06-07: 192 companies2026-06-08 to 2026-06-14: 172 companies2026-06-15 to 2026-06-21: 163 companies2026-06-22 to 2026-06-28: 108 companies2026-06-29 to 2026-07-05: 93 companies2026-07-06 to 2026-07-12: 80 companies2026-07-13 to 2026-07-19: 79 companies2026-07-20 to 2026-07-26: 70 companies2026-07-27 to 2026-08-02: 77 companies2026-08-03 to 2026-08-09: 131 companies2026-08-10 to 2026-08-16: 200 companies2026-08-17 to 2026-08-23: 218 companies2026-08-24 to 2026-08-30: 184 companies2026-08-31 to 2026-09-06: 175 companies2026-09-07 to 2026-09-13: 139 companies2026-09-14 to 2026-09-20: 186 companies2026-09-21 to 2026-09-27: 134 companies2026-09-28 to 2026-10-04: 130 companies2026-10-05 to 2026-10-11: 73 companies2026-10-12 to 2026-10-18: 72 companiesCompanies disclosing purchases, per weekMayJunJulAugSepOct

Tap an item for what it means.

●A purchase: the bigger the dot, the more was bought

Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.

×A sale

A cross is one insider's sales on one day. People sell to pay tax, to cash in share awards or to hold less of one company, so a sale says less than a purchase does. When someone bought and sold on the same day, the cross sits beside the dot. The totals are under “Purchases against sales” below.

▮Purple band: several insiders bought within 15 days

The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 1 May – 7 May, with 2 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.

Blue line: this share's price, −10.4% over these six months

The closing price of each day, from 1,965.84 on 2026-04-21 to 1,760.74 on 2026-10-09. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.

Dashed line: the typical stock on the same exchange, −11.1%

Taken from the 1230 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −10.4%, the typical one −11.1%, 0.7 points ahead. It is not an index and not a comparison within one industry.

▂Grey bars: companies across United States disclosing purchases each week

A taller bar is a week in which more companies disclosed insider purchases. The purple bar is the week of the band above: 96 companies, number 18 of the last 26 weeks. If that week was a peak anyway, buying together is less special than it looks.

This company: insiders buying per month, last 12 months

Nov
Dec
Jan
Feb
Mar
Apr
2May
Jun
Jul
Aug
Sep
Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Puckett A. LynneBoard member1—102.3k USD2026-05-01−1.0%
Leopold DianeBoard member2—268.7k USD2026-05-06−1.4%
Harris Greta JBoard member—1———

Purchases against sales

73%purchases
Purchases73%371.1k USD · 3 line(s) · 2 insider(s)
Sales27%140.4k USD · 3 line(s) · 1 insider(s)

Shares of the reported value of insider transactions in the 180-day window. Sales include disposals for tax, at option exercise or under a pre-set plan, which say little about an insider's view. The split describes what was disclosed; it is not a signal.

Why this score? · Model details

Priority = 100 × Σ(fixed weight × 0–1 rule-based input)

FactorWeightThis company inputPoint contribution
15-day buyer breadth (count)35%0.40014.0
Qualified-buy size25%0.43610.9
Role informativeness (inverted)20%1.00020.0
Recency10%0.0650.7
Buy/sell conviction10%0.6226.2

This is a heuristic ordering under the current rules, not a calibrated return forecast. It explains why candidates rank differently; the public-filing evidence and data limits are shown below.

BULL VS BEAR

Two readings of this buying

The same filings, read two ways. Each line is a fact stored for this company with the number behind it, and appears only when that number crosses a fixed threshold. Neither side is a forecast and no winner is declared.

Where the evidence comes from

Independent evidence does not object: the purchases themselves carry bull lines (more buyers than usual here); share price and trading, short sellers were checked and none crosses a bear threshold. No data is held for: company results, company actions.

  • The insider purchases themselvesBullmore buyers than usual here Bearinsiders also sold, latest purchase is old6 checked, under the threshold · 1 missing
  • Share price and trading2 checked, under the threshold
  • Short sellers2 checked, under the threshold
  • Company results2 missing
  • Company actionsno data held

Bull case · the buying is informative

  • No insider bought in the 180 days before this window; 2 have bought in it. The buying is new for this company, not a habit.

Bear case · discount it

  • Insiders also sold $140k in the same 180 days, 38% of the amount bought.
  • The latest purchase was 164 days ago (2026-05-07). A reporting period has passed since, so what the buyers knew then may already be public.

Evidence still missing

  • No buyer here has 5 or more completed earlier purchases on record, so there is no track record to weigh.
  • The company's market value is not captured, so the purchases cannot be stated as a share of the business or of its trading volume.
  • No earnings, margin or cash-flow figures are captured for this company. The latest annual and interim reports are where to check whether the business is improving or deteriorating.
Checked and under the threshold: 10, 2 close to it
  • BullAt most 2 insiders bought within any 15 days. Counted for the bull side from 3. close to the threshold
  • BearThe largest buyer accounts for 72% of the value bought. Counted for the bear side from 80%. close to the threshold
  • EitherNet purchases of $231k in 180 days. Bull from $1.0M, bear when all purchases total under $25k.
  • BearThe share price changed −8.5% over six months (three months −10%, one month −1.2%) and stands 20% below its 52-week high. Counted for the bear side from a fall of 20%.
  • BearOver three months the share price changed −10% and the median of 143 Financial Services companies changed −1.2%: behind by 9 points. Counted for the bear side from 20 points behind.
  • BearNone of the 2 purchase filings ticks Form 4's 10b5-1 box.
  • BearOver the last 5 trading days to 2026-10-16, 47% of this stock's off-exchange volume was sold short; over the 60 days before, 40%. The market's median is 50%. This is trading volume, not a position: a market maker who sells short and covers the same day is counted, so about half of all volume is short on an ordinary day. It is shown for comparison and counts for neither side.
  • Bull2 of 2 purchase filings state the shares held before and after. The largest addition to an existing holding took it from 500 to 550 shares (+10%). Counted for the bull side from +100%, for the bear side below +1%.
  • BearNo insider filing in the last 180 days opened a hedge on this stock.
  • BearFINRA short interest on 2026-09-30 equals 3.5 days of average trading volume and 2.2% of the 12,389,958 shares outstanding, down 0.69% from the previous report. Counted for the bear side from 10 days, or from 10% of the shares outstanding.

Both columns arrange stored facts only. They do not change the insider score or the ranking and are not investment advice.

Signal history

51.8 / 100

Latest recorded score

↑ +6.9 ptssince the first recorded snapshot on 2026-10-09; 9 calendar days observed
Recorded snapshots
7
First snapshot
2026-10-09

There is not yet a 30-calendar-day comparison; earlier scores are not reconstructed. These are raw signal scores saved when each full scoring run completed. They describe changes in research ranking, not price performance or returns.

Why did it change?

Less than 30 days of comparable history is available, so factor movement is not yet decomposed.

Signal score history

Fixed 0–100 scale; dates are spaced by calendar time.

02550751002026-10-09 · 44.92026-10-12 · 52.02026-10-13 · 52.02026-10-14 · 52.02026-10-15 · 51.82026-10-16 · 51.82026-10-18 · 51.8Oct 09Oct 13Oct 14Oct 15Oct 18

Recent recorded points

  1. 44.9
  2. 52.0
  3. 52.0
  4. 51.8
  5. 51.8
View all recorded scores
Snapshot dateSignal score
2026-10-0944.9
2026-10-1252.0
2026-10-1352.0
2026-10-1452.0
2026-10-1551.8
2026-10-1651.8
2026-10-1851.8

Sector context

Financial Services

Buying breadth
4.1% (29 / 701 issuers)
Sector rank
#7 / 13

This is sector-level research context. It does not affect the Insider Signal or ranking.

View US sector research →

Insider profile outcomes

Historical performance following insider filings. The company role is translated below each name while preserving the original title.

Events are disclosure-level observations; related disclosures published on the same date may share a return path and may not be statistically independent. This research enrichment does not affect the insider score or ranking.

Leopold DianeDirector
First purchase in 12M
3/3
Large purchase ≥ $100k
3/3
Cluster buying · 15D
1/3
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable
GAYNER THOMAS SINNICKSONChief Executive Officer
First purchase in 12M
0/1
Large purchase ≥ $100k
2/2
Cluster buying · 15D
0/2
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable
Cunningham Lawrence ADirector
First purchase in 12M
Not classifiable
Large purchase ≥ $100k
0/1
Cluster buying · 15D
0/1
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable

Signal outcomes

Calculated from immutable US ranking snapshots; excess return is stock return minus SPY return. Newly saved snapshots remain pending until each forward horizon matures. This never affects the US score.

HorizonStatusResult
5DAwaiting maturity—
20DAwaiting maturity—
60DAwaiting maturity—
120DAwaiting maturity—

Market context

PRICE PERFORMANCE

1M
-1.2%
3M
-10.3%
6M
-8.5%
12M
-10.0%

VOLATILITY & LIQUIDITY

Volatility
21.8%
Beta
—
Avg daily volume
$120.3M

VALUATION

Market cap
—
P/E
—

FUNDAMENTALS

Profit margin
—
ROE
—
Industry
—

Prices to 11 Oct 2026: OpenBB/yfinance; volume from price cache (yfinance). It does not affect the insider score or rank.

Insiders' buying price vs the latest close

The latest close in the price history is more than a week old.

Buying size vs market trading

Complete price and volume history is not yet available.

Market-data coverage: 0 verified sessions · Latest session: — · Ratio status: Unavailable

Traded value is estimated as close × shares traded, in major currency units. Includes disclosed qualifying purchases; disclosures may lag. Contractual or planned acquisitions are not necessarily discretionary. Ratios describe relative trading size, not market participation or score contributions.

Regulatory filings

Unfold all 45 filings

Results and insider purchases

Results (8-K)Bought within 5 sessionsBought within 20 sessionsBuyers, 20 sessions before
2026-02-0416:40 ET · after the closeFirst session 2026-02-05NoneNone0
2025-10-2916:39 ET · after the closeFirst session 2025-10-30NoneNone0
2025-02-0516:41 ET · after the closeFirst session 2025-02-061 · $200.8KGAYNER THOMAS SINNICKSON1 · $200.8KGAYNER THOMAS SINNICKSON0
2024-01-3116:40 ET · after the closeFirst session 2024-02-01NoneNone0

Results dates are the company's 8-K filings to the SEC under Item 2.02 (results of operations); one filed after the close counts from the next session. Purchases are open-market buys reported on Form 4 (code P), by trade date; a Form 4 can arrive two business days after the trade, so the latest days can still fill in. Facts only; this does not change the score or rank.

Ownership and trading-plan context

Direct / indirect ownershipMixed direct / indirect
10b5-1 filing evidenceNot declared in filing field
Evidence retrieved2026-10-18T21:07:10+00:00

These are accession-level filing fields. Unavailable means the evidence was not fetched or parsed; it is never inferred as “No” and does not adjust the US score.

Filing evidence

These are underlying national-feed records from the 365-day window ending on the saved ranking snapshot. The score uses only the latest 180 days; older qualifying equity purchases remain visible for audit but do not enter the current score. The original filer, role, transaction classification, instrument, price, volume, value and source fields are retained. The first three rows are shown; remaining records can be unfolded for audit. Other transaction types are retained but excluded from the score.

Excluded transactions & classification

2 qualifying purchase disclosure(s) · 3 transaction line(s)

May 7, 2026Open market purchase
Leopold Diane · Director
Common Stock · 50.0 shares × 1789.19 USD · 89459.5 USD
Open filing
May 6, 2026Open market purchase
Leopold Diane · Director
Common Stock · 100.0 shares × 1792.61 USD · 179261.0 USD
Open filing
May 1, 2026Open market purchase
Puckett A. Lynne · Director
Common Stock · 57.0 shares × 1795.53 USD · 102345.20999999999 USD
Open filing

Showing 3 of 3 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Other disclosed transactions · excluded from score

View 65 other transaction(s)

Dec 11, 2025Open market sale
MARKEL STEVEN A · Director
Common Stock · 40.0 shares × 2112.03 USD · 84481.20000000001 USD
Open filing
Dec 11, 2025Open market sale
MARKEL STEVEN A · Director
Common Stock · 120.0 shares × 2114.99 USD · 253798.8 USD
Open filing
Dec 11, 2025Open market sale
MARKEL STEVEN A · Director
Common Stock · 100.0 shares × 2116.18 USD · 211617.99999999997 USD
Open filing
Unfold all 62 remaining filing row(s)
Transaction datePublishedFilerRoleTransactionInstrumentPrice (local currency)Quote currencyVolumeReported value (local currency)Source
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2117.37 USDUSD201.0425591.37 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2118.37 USDUSD24.050840.88 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2120.65 USDUSD51.0108153.15000000001 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2121.69 USDUSD173.0367052.37 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2123.05 USDUSD10.021230.5 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2125.0 USDUSD32.068000.0 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2126.0 USDUSD75.0159450.0 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2127.26 USDUSD190.0404179.4 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2128.0 USDUSD10.021280.0 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2129.98 USDUSD120.0255597.6 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2108.27 USDUSD70.0147578.9 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2100.0 USDUSD64.0134400.0 USDOpen filing
2025-12-112025-12-15MARKEL STEVEN ADirectorOpen market saleCommon Stock2103.55 USDUSD50.0105177.50000000001 USDOpen filing
2025-12-022025-12-03GAYNER THOMAS SINNICKSONChief Executive OfficerShares withheld for tax or exercise priceCommon Stock2060.83 USDUSD36.6175446.98629999999 USDOpen filing
2025-12-022025-12-03Wilson SimonCEO, Markel InsuranceShares withheld for tax or exercise priceCommon Stock2060.83 USDUSD94.0193718.02 USDOpen filing
2025-12-022025-12-03Heaton Michael REVP & Chief Operating OfficerShares withheld for tax or exercise priceCommon Stock2060.83 USDUSD217.38447983.2254 USDOpen filing
2025-12-022025-12-03Grinnan Richard RandolphSVP, Chief Legal Officer & SecShares withheld for tax or exercise priceCommon Stock2060.83 USDUSD138.01284415.14829999994 USDOpen filing
2025-12-022025-12-03Crowley Andrew G.President, Markel VenturesShares withheld for tax or exercise priceCommon Stock2060.83 USDUSD64.77133479.95909999998 USDOpen filing
2025-12-022025-12-03Costanzo Brian J.Chief Financial OfficerShares withheld for tax or exercise priceCommon Stock2060.83 USDUSD21.7244761.2276 USDOpen filing
2025-11-282025-12-01MARKEL STEVEN ADirectorOpen market saleCommon Stock2100.0 USDUSD100.0210000.0 USDOpen filing
2025-11-262025-12-01MARKEL STEVEN ADirectorOpen market saleCommon Stock2100.0 USDUSD70.0147000.0 USDOpen filing
2025-11-252025-11-25Wilson SimonCEO, Markel InsuranceOpen market saleCommon Stock2072.94 USDUSD75.0155470.5 USDOpen filing
2025-11-172025-11-18MARKEL STEVEN ADirectorBona fide giftCommon Stock0.0 USDUSD500.00.0 USDOpen filing
2026-02-262026-02-26Wilson SimonEVP and CEO, Markel InsuranceOpen market saleCommon Stock2079.48 USDUSD100.0207948.0 USDOpen filing
2026-02-242026-02-26Costanzo Brian J.Chief Financial OfficerGrant or awardCommon Stock0.0 USDUSD654.640.0 USDOpen filing
2026-02-242026-02-26Crowley Andrew G.EVP & Pres., Markel VenturesGrant or awardCommon Stock0.0 USDUSD830.020.0 USDOpen filing
2026-02-242026-02-26Grinnan Richard RandolphSVP, Chief Legal Officer & SecGrant or awardCommon Stock0.0 USDUSD800.510.0 USDOpen filing
2026-02-242026-02-26Grandis Meade P.CAO and ControllerGrant or awardCommon Stock0.0 USDUSD69.720.0 USDOpen filing
2026-02-242026-02-26GAYNER THOMAS SINNICKSONChief Executive OfficerGrant or awardCommon Stock0.0 USDUSD4483.620.0 USDOpen filing
2026-02-242026-02-26Wilson SimonEVP and CEO, Markel InsuranceGrant or awardCommon Stock0.0 USDUSD868.120.0 USDOpen filing
2026-02-172026-02-19Wilson SimonCEO, Markel InsuranceShares withheld for tax or exercise priceCommon Stock2084.46 USDUSD47.097969.62 USDOpen filing
2025-12-312026-01-20Costanzo Brian J.Chief Financial OfficerOther acquisition or dispositionCommon Stock1602.62 USDUSD2.183493.7116 USDOpen filing
2026-06-152026-06-17Besca MarkDirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD80.9134993.785 USDOpen filing
2026-06-152026-06-17Housel Morgan E.DirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD65.92109997.40800000001 USDOpen filing
2026-06-152026-06-17Leopold DianeDirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD65.92109997.40800000001 USDOpen filing
2026-06-152026-06-17MICHAEL JONATHAN EDirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD65.92109997.40800000001 USDOpen filing
2026-06-152026-06-17Morrison Harold Lawrence Jr.DirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD32.9654998.704000000005 USDOpen filing
2026-06-152026-06-17Cunningham Lawrence ADirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD32.9654998.704000000005 USDOpen filing
2026-06-152026-06-17Puckett A. LynneDirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD65.92109997.40800000001 USDOpen filing
2026-06-152026-06-17OREILLY MICHAELDirectorOther acquisition or dispositionCommon Stock1668.65 USDUSD89.89149994.9485 USDOpen filing
2026-05-222026-05-27Harris Greta JDirectorOpen market saleCommon Stock1848.83 USDUSD27.049918.409999999996 USDOpen filing
2026-05-222026-05-27Harris Greta JDirectorOpen market saleCommon Stock1846.12 USDUSD35.064614.2 USDOpen filing
2026-05-222026-05-27Harris Greta JDirectorOpen market saleCommon Stock1847.36 USDUSD14.025863.039999999997 USDOpen filing
2026-05-202026-05-22MICHAEL JONATHAN EDirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Morrison Harold Lawrence Jr.DirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Besca MarkDirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Harris Greta JDirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Cunningham Lawrence ADirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22OREILLY MICHAELDirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Housel Morgan E.DirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Puckett A. LynneDirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-202026-05-22Leopold DianeDirectorGrant or awardCommon Stock0.0 USDUSD89.00.0 USDOpen filing
2026-05-152026-05-19GAYNER THOMAS SINNICKSONChief Executive OfficerShares withheld for tax or exercise priceCommon Stock1844.0 USDUSD481.67888199.48 USDOpen filing
2026-05-152026-05-19Grinnan Richard RandolphSVP, Chief Legal Officer & SecShares withheld for tax or exercise priceCommon Stock1844.0 USDUSD116.36214567.84 USDOpen filing
2026-05-152026-05-19Crowley Andrew G.EVP & Pres., Markel VenturesShares withheld for tax or exercise priceCommon Stock1844.0 USDUSD74.87138060.28 USDOpen filing
2026-05-152026-05-19Crowley Andrew G.EVP & Pres., Markel VenturesOther acquisition or dispositionCommon Stock1659.6 USDUSD60.26100007.49599999998 USDOpen filing
2026-05-152026-05-19Costanzo Brian J.Chief Financial OfficerShares withheld for tax or exercise priceCommon Stock1844.0 USDUSD13.0824119.52 USDOpen filing
2026-05-152026-05-19Costanzo Brian J.Chief Financial OfficerOther acquisition or dispositionCommon Stock1659.6 USDUSD30.1350003.74799999999 USDOpen filing
2026-07-152026-07-16Crowley Andrew G.EVP & Pres., Markel VenturesOther acquisition or dispositionCommon Stock1730.49 USDUSD7.4812944.065200000001 USDOpen filing
2026-06-302026-07-16Costanzo Brian J.Chief Financial OfficerOther acquisition or dispositionCommon Stock1617.19 USDUSD2.163493.1304000000005 USDOpen filing
2026-06-302026-07-16Crowley Andrew G.EVP & Pres., Markel VenturesOther acquisition or dispositionCommon Stock1617.19 USDUSD2.824560.4758 USDOpen filing
2026-09-302026-10-16Costanzo Brian J.Chief Financial OfficerOther acquisition or dispositionCommon Stock1455.58 USDUSD2.0612999.9503799999998 USDOpen filing

Showing 65 of 65 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Snapshot & identity

Snapshot date
2026-10-18
Ticker
MKL
ISIN
—
Sector
Financial Services
Industry
—

Share this page

Save share image

The image states the stored facts and the snapshot date. It is not a recommendation.

Company logos by Parqet

How to read Form 4 transaction codes

CodeInterpretationScreen treatment
POpen-market / private purchaseBuy evidence when the security is qualifying equity
SSaleSell evidence when the security is qualifying equity
AGrant / awardContext only
FTax-related withholdingContext only
MOption exerciseContext only
GGiftContext only
J / LOther / non-directionalContext only

P/S rows for options, warrants, compensation units and debt remain visible for audit but are excluded from equity scores and quotes.