Mark Ellwood Brockbank — SEC Insider Profile, Roles & Companies

Insider at

WRB buying Aug. 1, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 96 non-open-market transactions below 12 months to the week close of 2026-10-23

Price change vs the latest weekly close (updated to the current quote in your browser when available), split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

96 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 1, 2022	WRB	P	1,434	$61.85	$88,693	6,000 Indirect	+31.41%	Acquired	77.8% (price as of 2026-10-23)
July 29, 2022	WRB	P	4,566	$62.00	$283,092	4,566 Indirect	·	Acquired	77.4% (price as of 2026-10-23)
June 15, 2022	WRB	A	2,995	·	·	89,191 Direct	+3.47%	Acquired
Dec. 23, 2021	WRB	S	25,000	$80.31	$2,007,750	802,659 Indirect	-3.02%	Disposed	105.4% (price as of 2026-10-23)
Dec. 1, 2021	WRB	M	38,301	·	·	95,765 Direct	+66.65%	Acquired
Dec. 1, 2021	WRB	D	38,301	$77.73	$2,977,137	57,464 Direct	-39.99%	Disposed	112.3% (price as of 2026-10-23)
Dec. 1, 2021	WRB	M	38,301	·	·	0 Direct	-100.00%	Disposed
June 15, 2021	WRB	A	2,652	·	·	57,464 Direct	+4.84%	Acquired
Jan. 4, 2021	WRB	A	22	$65.70	$1,445	38,301 Direct	+0.06%	Acquired
Dec. 1, 2020	WRB	A	37	$67.02	$2,480	38,279 Direct	+0.10%	Acquired
Nov. 2, 2020	WRB	A	341	$61.42	$20,944	38,242 Direct	+0.90%	Acquired
Oct. 1, 2020	WRB	A	24	$60.87	$1,461	37,901 Direct	+0.06%	Acquired
Sept. 1, 2020	WRB	A	40	$62.12	$2,485	37,877 Direct	+0.11%	Acquired
Aug. 3, 2020	WRB	A	338	$61.98	$20,949	37,837 Direct	+0.90%	Acquired
July 1, 2020	WRB	A	130	$57.40	$7,462	37,499 Direct	+0.35%	Acquired
June 12, 2020	WRB	A	3,483	·	·	54,812 Direct	+6.79%	Acquired
May 1, 2020	WRB	A	403	$52.10	$20,996	37,343 Direct	+1.09%	Acquired
March 2, 2020	WRB	A	36	$68.39	$2,462	36,940 Direct	+0.10%	Acquired
Feb. 3, 2020	WRB	A	282	$74.37	$20,972	36,904 Direct	+0.77%	Acquired
Dec. 2, 2019	WRB	A	58	$68.11	$3,950	36,622 Direct	+0.16%	Acquired
Nov. 1, 2019	WRB	A	300	$69.87	$20,961	36,564 Direct	+0.83%	Acquired
Sept. 3, 2019	WRB	A	35	$71.34	$2,497	36,264 Direct	+0.10%	Acquired
Aug. 1, 2019	WRB	A	302	$69.53	$20,998	36,229 Direct	+0.84%	Acquired
July 1, 2019	WRB	A	98	$65.90	$6,458	35,927 Direct	+0.27%	Acquired
June 20, 2019	WRB	S	77,000	$66.61	$5,128,970	827,659 Indirect	-8.51%	Disposed	147.7% (price as of 2026-10-23)
June 6, 2019	WRB	A	3,151	·	·	51,329 Direct	+6.54%	Acquired
June 6, 2019	WRB	A	3,151	·	·	51,329 Direct	+6.54%	Acquired
June 3, 2019	WRB	A	16	$62.36	$998	35,829 Direct	+0.04%	Acquired
May 1, 2019	WRB	A	341	$61.40	$20,937	35,813 Direct	+0.96%	Acquired
March 1, 2019	WRB	A	29	$84.24	$2,443	23,646 Direct	+0.12%	Acquired
Feb. 1, 2019	WRB	A	271	$77.26	$20,937	23,617 Direct	+1.16%	Acquired
Dec. 3, 2018	WRB	A	31	$78.32	$2,428	23,346 Direct	+0.13%	Acquired
Nov. 1, 2018	WRB	A	277	$75.62	$20,947	23,315 Direct	+1.20%	Acquired
Sept. 4, 2018	WRB	A	31	$78.29	$2,427	23,038 Direct	+0.13%	Acquired
Aug. 1, 2018	WRB	A	290	$75.86	$21,999	23,007 Direct	+1.28%	Acquired
July 2, 2018	WRB	A	69	$72.14	$4,978	22,717 Direct	+0.30%	Acquired
June 1, 2018	WRB	A	32	$77.03	$2,465	22,648 Direct	+0.14%	Acquired
May 31, 2018	WRB	A	2,619	·	·	32,119 Direct	+8.88%	Acquired
May 1, 2018	WRB	A	281	$74.50	$20,934	22,616 Direct	+1.26%	Acquired
March 1, 2018	WRB	A	36	$68.24	$2,457	22,335 Direct	+0.16%	Acquired
Feb. 1, 2018	WRB	A	287	$73.11	$20,983	22,299 Direct	+1.30%	Acquired
Jan. 2, 2018	WRB	A	14	$70.93	$993	22,012 Direct	+0.06%	Acquired
Dec. 1, 2017	WRB	A	36	$68.82	$2,478	21,998 Direct	+0.16%	Acquired
Nov. 1, 2017	WRB	A	306	$68.58	$20,985	21,962 Direct	+1.41%	Acquired
Sept. 1, 2017	WRB	A	37	$66.44	$2,458	21,656 Direct	+0.17%	Acquired
Aug. 1, 2017	WRB	A	318	$69.11	$21,977	21,619 Direct	+1.49%	Acquired
June 1, 2017	WRB	A	108	$69.06	$7,458	21,301 Direct	+0.51%	Acquired
May 16, 2017	WRB	A	3,000	·	·	29,500 Direct	+11.32%	Acquired
May 1, 2017	WRB	A	309	$67.86	$20,969	21,193 Direct	+1.48%	Acquired
April 3, 2017	WRB	A	21	$70.26	$1,475	20,884 Direct	-0.10%	Disposed
March 1, 2017	WRB	A	34	$72.08	$2,451	20,863 Direct	-0.16%	Disposed
Feb. 1, 2017	WRB	A	312	$67.18	$20,960	20,829 Direct	+1.52%	Acquired
Jan. 3, 2017	WRB	A	15	$66.47	$997	20,517 Direct	+0.07%	Acquired
Dec. 1, 2016	WRB	A	40	$62.34	$2,494	20,502 Direct	+0.20%	Acquired
Nov. 1, 2016	WRB	A	370	$56.62	$20,949	20,462 Direct	+1.84%	Acquired
Sept. 1, 2016	WRB	A	42	$59.06	$2,481	20,092 Direct	+0.21%	Acquired
Aug. 1, 2016	WRB	A	363	$57.74	$20,960	20,050 Direct	+1.84%	Acquired
June 1, 2016	WRB	A	132	$56.80	$7,498	19,687 Direct	+0.68%	Acquired
May 25, 2016	WRB	A	3,000	·	·	26,500 Direct	+12.77%	Acquired
May 2, 2016	WRB	A	373	$56.21	$20,966	19,555 Direct	+1.94%	Acquired
March 1, 2016	WRB	A	67	$52.12	$3,492	19,182 Direct	+0.35%	Acquired
Feb. 1, 2016	WRB	A	419	$50.10	$20,992	19,115 Direct	+2.24%	Acquired
Dec. 1, 2015	WRB	A	44	$56.08	$2,468	18,696 Direct	+0.24%	Acquired
Nov. 2, 2015	WRB	A	376	$55.84	$20,996	18,652 Direct	+2.06%	Acquired
Sept. 1, 2015	WRB	A	46	$53.44	$2,458	18,276 Direct	+0.25%	Acquired
Aug. 3, 2015	WRB	A	377	$55.64	$20,976	18,230 Direct	+2.11%	Acquired
July 1, 2015	WRB	A	138	$54.17	$7,475	17,853 Direct	+0.78%	Acquired
June 2, 2015	WRB	A	3,000	·	·	23,500 Direct	+14.63%	Acquired
May 1, 2015	WRB	A	426	$49.21	$20,963	17,715 Direct	+2.46%	Acquired
March 2, 2015	WRB	A	70	$49.96	$3,497	17,289 Direct	+0.41%	Acquired
Feb. 2, 2015	WRB	A	428	$48.96	$20,955	17,219 Direct	+2.55%	Acquired
Jan. 2, 2015	WRB	A	29	$51.08	$1,481	16,791 Direct	+0.17%	Acquired
Dec. 1, 2014	WRB	A	47	$52.11	$2,449	16,762 Direct	+0.28%	Acquired
Nov. 3, 2014	WRB	A	407	$51.51	$20,965	16,715 Direct	+2.50%	Acquired
Sept. 2, 2014	WRB	A	51	$48.66	$2,482	16,308 Direct	+0.31%	Acquired
Aug. 1, 2014	WRB	A	471	$44.55	$20,983	16,257 Direct	+2.98%	Acquired
June 2, 2014	WRB	A	167	$44.64	$7,455	15,786 Direct	+1.07%	Acquired
May 1, 2014	WRB	A	475	$44.18	$20,986	15,619 Direct	+3.14%	Acquired
April 1, 2014	WRB	A	36	$41.28	$1,486	15,144 Direct	+0.24%	Acquired
March 3, 2014	WRB	A	61	$40.77	$2,487	15,108 Direct	-0.40%	Disposed
Feb. 3, 2014	WRB	A	548	$38.30	$20,988	14,597 Direct	+3.90%	Acquired
Jan. 2, 2014	WRB	A	58	$42.98	$2,493	14,049 Direct	+0.41%	Acquired
Dec. 2, 2013	WRB	A	57	$43.17	$2,461	13,991 Direct	+0.41%	Acquired
Nov. 1, 2013	WRB	A	480	$43.72	$20,986	13,934 Direct	+3.57%	Acquired
Sept. 3, 2013	WRB	A	60	$41.20	$2,472	13,454 Direct	+0.45%	Acquired
Aug. 1, 2013	WRB	A	488	$42.96	$20,964	13,394 Direct	+3.78%	Acquired
June 3, 2013	WRB	A	183	$40.78	$7,463	13,356 Direct	+1.39%	Acquired
May 21, 2013	WRB	A	3,000	·	·	20,500 Direct	+17.14%	Acquired
May 21, 2013	WRB	A	3,000	·	·	17,500 Direct	+20.69%	Acquired
May 1, 2013	WRB	A	417	$43.15	$17,994	13,173 Direct	+3.27%	Acquired
April 1, 2013	WRB	A	22	$44.28	$974	12,756 Direct	+0.17%	Acquired
March 1, 2013	WRB	A	60	$41.40	$2,484	12,734 Direct	+0.47%	Acquired
Feb. 1, 2013	WRB	A	456	$41.66	$18,997	12,674 Direct	+3.73%	Acquired
Jan. 2, 2013	WRB	A	26	$38.34	$997	12,218 Direct	+0.21%	Acquired
Dec. 3, 2012	WRB	A	100	$39.64	$3,964	12,192 Direct	+0.83%	Acquired
Nov. 1, 2012	WRB	A	460	$39.06	$17,968	12,092 Direct	+3.95%	Acquired
Sept. 4, 2012	WRB	A	106	$37.56	$3,981	11,632 Direct	+0.92%	Acquired
Aug. 1, 2012	WRB	A	490	$36.66	$17,963	11,526 Direct	+4.44%	Acquired
June 1, 2012	WRB	A	197	$38.01	$7,488	11,036 Direct	+1.82%	Acquired
May 22, 2012	WRB	A	3,000	·	·	14,500 Direct	+26.09%	Acquired

Loaded 100 of 176 rows

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Dec. 1, 2021	WRB	Phantom Stock	Common Stock (38,301)	·	Dec. 1, 2021	38,301	Disposed
Jan. 4, 2021	WRB	Phantom Stock	Common Stock (22)	·	·	22	Acquired
Dec. 1, 2020	WRB	Phantom Stock	Common Stock (37)	·	·	37	Acquired
Nov. 2, 2020	WRB	Phantom Stock	Common Stock (341)	·	·	341	Acquired
Oct. 1, 2020	WRB	Phantom Stock	Common Stock (24)	·	·	24	Acquired
Sept. 1, 2020	WRB	Phantom Stock	Common Stock (40)	·	·	40	Acquired
Aug. 3, 2020	WRB	Phantom Stock	Common Stock (338)	·	·	338	Acquired
July 1, 2020	WRB	Phantom Stock	Common Stock (130)	·	·	130	Acquired
May 1, 2020	WRB	Phantom Stock	Common Stock (403)	·	·	403	Acquired
March 2, 2020	WRB	Phantom Stock	Common Stock (36)	·	·	36	Acquired
Feb. 3, 2020	WRB	Phantom Stock	Common Stock (282)	·	·	282	Acquired
Dec. 2, 2019	WRB	Phantom Stock	Common Stock (58)	·	·	58	Acquired
Nov. 1, 2019	WRB	Phantom Stock	Common Stock (300)	·	·	300	Acquired
Sept. 3, 2019	WRB	Phantom Stock	Common Stock (35)	·	·	35	Acquired
Aug. 1, 2019	WRB	Phantom Stock	Common Stock (302)	·	·	302	Acquired
July 1, 2019	WRB	Phantom Stock	Common Stock (98)	·	·	98	Acquired
June 3, 2019	WRB	Phantom Stock	Common Stock (16)	·	·	16	Acquired
May 1, 2019	WRB	Phantom Stock	Common Stock (341)	·	·	341	Acquired
March 1, 2019	WRB	Phantom Stock	Common Stock (29)	·	·	29	Acquired
Feb. 1, 2019	WRB	Phantom Stock	Common Stock (271)	·	·	271	Acquired
Dec. 3, 2018	WRB	Phantom Stock	Common Stock (31)	·	·	31	Acquired
Nov. 1, 2018	WRB	Phantom Stock	Common Stock (277)	·	·	277	Acquired
Sept. 4, 2018	WRB	Phantom Stock	Common Stock (31)	·	·	31	Acquired
Aug. 1, 2018	WRB	Phantom Stock	Common Stock (290)	·	·	290	Acquired
July 2, 2018	WRB	Phantom Stock	Common Stock (69)	·	·	69	Acquired
June 1, 2018	WRB	Phantom Stock	Common Stock (32)	·	·	32	Acquired
May 1, 2018	WRB	Phantom Stock	Common Stock (281)	·	·	281	Acquired
March 1, 2018	WRB	Phantom Stock	Common Stock (36)	·	·	36	Acquired
Feb. 1, 2018	WRB	Phantom Stock	Common Stock (287)	·	·	287	Acquired
Jan. 2, 2018	WRB	Phantom Stock	Common Stock (14)	·	·	14	Acquired
Dec. 1, 2017	WRB	Phantom Stock	Common Stock (36)	·	·	36	Acquired
Nov. 1, 2017	WRB	Phantom Stock	Common Stock (306)	·	·	306	Acquired
Sept. 1, 2017	WRB	Phantom Stock	Common Stock (37)	·	·	37	Acquired
Aug. 1, 2017	WRB	Phantom Stock	Common Stock (318)	·	·	318	Acquired
June 1, 2017	WRB	Phantom Stock	Common Stock (108)	·	·	108	Acquired
May 1, 2017	WRB	Phantom Stock	Common Stock (309)	·	·	309	Acquired
April 3, 2017	WRB	Phantom Stock	Common Stock (21)	·	·	21	Disposed
March 1, 2017	WRB	Phantom Stock	Common Stock (34)	·	·	34	Disposed
Feb. 1, 2017	WRB	Phantom Stock	Common Stock (312)	·	·	312	Acquired
Jan. 3, 2017	WRB	Phantom Stock	Common Stock (15)	·	·	15	Acquired
Dec. 1, 2016	WRB	Phantom Stock	Common Stock (40)	·	·	40	Acquired
Nov. 1, 2016	WRB	Phantom Stock	Common Stock (370)	·	·	370	Acquired
Sept. 1, 2016	WRB	Phantom Stock	Common Stock (42)	·	·	42	Acquired
Aug. 1, 2016	WRB	Phantom Stock	Common Stock (363)	·	·	363	Acquired
June 1, 2016	WRB	Phantom Stock	Common Stock (132)	·	·	132	Acquired
May 2, 2016	WRB	Phantom Stock	Common Stock (373)	·	·	373	Acquired
March 1, 2016	WRB	Phantom Stock	Common Stock (67)	·	·	67	Acquired
Feb. 1, 2016	WRB	Phantom Stock	Common Stock (419)	·	·	419	Acquired
Dec. 1, 2015	WRB	Phantom Stock	Common Stock (44)	·	·	44	Acquired
Nov. 2, 2015	WRB	Phantom Stock	Common Stock (376)	·	·	376	Acquired
Sept. 1, 2015	WRB	Phantom Stock	Common Stock (46)	·	·	46	Acquired
Aug. 3, 2015	WRB	Phantom Stock	Common Stock (377)	·	·	377	Acquired
July 1, 2015	WRB	Phantom Stock	Common Stock (138)	·	·	138	Acquired
May 1, 2015	WRB	Phantom Stock	Common Stock (426)	·	·	426	Acquired
March 2, 2015	WRB	Phantom Stock	Common Stock (70)	·	·	70	Acquired
Feb. 2, 2015	WRB	Phantom Stock	Common Stock (428)	·	·	428	Acquired
Jan. 2, 2015	WRB	Phantom Stock	Common Stock (29)	·	·	29	Acquired
Dec. 1, 2014	WRB	Phantom Stock	Common Stock (47)	·	·	47	Acquired
Nov. 3, 2014	WRB	Phantom Stock	Common Stock (407)	·	·	407	Acquired
Sept. 2, 2014	WRB	Phantom Stock	Common Stock (51)	·	·	51	Acquired
Aug. 1, 2014	WRB	Phantom Stock	Common Stock (471)	·	·	471	Acquired
June 2, 2014	WRB	Phantom Stock	Common Stock (167)	·	·	167	Acquired
May 1, 2014	WRB	Phantom Stock	Common Stock (475)	·	·	475	Acquired
April 1, 2014	WRB	Phantom Stock	Common Stock (36)	·	·	36	Acquired
March 3, 2014	WRB	Phantom Stock	Common Stock (61)	·	·	61	Disposed
Feb. 3, 2014	WRB	Phantom Stock	Common Stock (548)	·	·	548	Acquired
Jan. 2, 2014	WRB	Phantom Stock	Common Stock (58)	·	·	58	Acquired
Dec. 2, 2013	WRB	Phantom Stock	Common Stock (57)	·	·	57	Acquired
Nov. 1, 2013	WRB	Phantom Stock	Common Stock (480)	·	·	480	Acquired
Sept. 3, 2013	WRB	Phantom Stock	Common Stock (60)	·	·	60	Acquired
Aug. 1, 2013	WRB	Phantom Stock	Common Stock (488)	·	·	488	Acquired
June 3, 2013	WRB	Phantom Stock	Common Stock (183)	·	·	183	Acquired
May 1, 2013	WRB	Phantom Stock	Common Stock (417)	·	·	417	Acquired
April 1, 2013	WRB	Phantom Stock	Common Stock (22)	·	·	22	Acquired
March 1, 2013	WRB	Phantom Stock	Common Stock (60)	·	·	60	Acquired
Feb. 1, 2013	WRB	Phantom Stock	Common Stock (456)	·	·	456	Acquired
Jan. 2, 2013	WRB	Phantom Stock	Common Stock (26)	·	·	26	Acquired
Dec. 3, 2012	WRB	Phantom Stock	Common Stock (100)	·	·	100	Acquired
Nov. 1, 2012	WRB	Phantom Stock	Common Stock (460)	·	·	460	Acquired
Sept. 4, 2012	WRB	Phantom Stock	Common Stock (106)	·	·	106	Acquired
Aug. 1, 2012	WRB	Phantom Stock	Common Stock (490)	·	·	490	Acquired
June 1, 2012	WRB	Phantom Stock	Common Stock (197)	·	·	197	Acquired
May 1, 2012	WRB	Phantom Stock	Common Stock (473)	·	·	473	Acquired
March 1, 2012	WRB	Phantom Stock	Common Stock (69)	·	·	69	Acquired
Feb. 1, 2012	WRB	Phantom Stock	Common Stock (537)	·	·	537	Acquired
Jan. 3, 2012	WRB	Phantom Stock	Common Stock (28)	·	·	28	Acquired
Dec. 1, 2011	WRB	Phantom Stock	Common Stock (74)	·	·	74	Acquired
Nov. 1, 2011	WRB	Phantom Stock	Common Stock (526)	·	·	526	Acquired
Sept. 1, 2011	WRB	Phantom Stock	Common Stock (81)	·	·	81	Acquired
Aug. 1, 2011	WRB	Phantom Stock	Common Stock (582)	·	·	582	Acquired
June 1, 2011	WRB	Phantom Stock	Common Stock (228)	·	·	228	Acquired
May 2, 2011	WRB	Phantom Stock	Common Stock (555)	·	·	555	Acquired
March 1, 2011	WRB	Phantom Stock	Common Stock (83)	·	·	83	Acquired
Feb. 1, 2011	WRB	Phantom Stock	Common Stock (664)	·	·	664	Acquired
Jan. 3, 2011	WRB	Phantom Stock	Common Stock (36)	·	·	36	Acquired
Dec. 1, 2010	WRB	Phantom Stock	Common Stock (92)	·	·	92	Acquired
Nov. 1, 2010	WRB	Phantom Stock	Common Stock (652)	·	·	652	Acquired
Sept. 1, 2010	WRB	Phantom Stock	Common Stock (151)	·	·	151	Acquired
Aug. 2, 2010	WRB	Phantom Stock	Common Stock (701)	·	·	701	Acquired
June 1, 2010	WRB	Phantom Stock	Common Stock (273)	·	·	273	Acquired

Loaded 100 of 113 rows

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Holdings reported on Form 4 21 reported holdings

Positions listed on each Form 4 without a transaction in that filing (Table I and II holdings), newest filing first.

Date	Ticker	Security	Shares	Exercise price	Expiration	Ownership
Aug. 2, 2022	WRB	Common Stock	89,191	·	·	Direct
Aug. 2, 2022	WRB	Common Stock	1,203,988	·	·	Indirect
June 15, 2022	WRB	Common Stock	1,203,988	·	·	Indirect
Dec. 23, 2021	WRB	Common Stock	57,464	·	·	Direct
Dec. 3, 2021	WRB	Common Stock	827,659	·	·	Indirect
June 16, 2021	WRB	Common Stock	827,659	·	·	Indirect
June 12, 2020	WRB	Common Stock	827,659	·	·	Indirect
June 21, 2019	WRB	Common Stock	904,659	·	·	Indirect
June 21, 2019	WRB	Common Stock	51,329	·	·	Direct
June 10, 2019	WRB	Common Stock	904,659	·	·	Indirect
June 4, 2018	WRB	Common Stock	603,106	·	·	Indirect
May 16, 2017	WRB	Common Stock	603,106	·	·	Indirect
May 26, 2016	WRB	Common Stock	603,106	·	·	Indirect
June 2, 2015	WRB	Common Stock	603,106	·	·	Indirect
May 21, 2014	WRB	Common Stock	603,106	·	·	Indirect
May 22, 2013	WRB	Common Stock	603,106	·	·	Indirect
May 22, 2012	WRB	Common Stock	603,106	·	·	Indirect
May 18, 2011	WRB	Common Stock	603,106	·	·	Indirect
May 18, 2010	WRB	Common Stock	603,106	·	·	Indirect
May 20, 2009	WRB	Common Stock	603,106	·	·	Indirect
May 30, 2008	WRB	Common Stock	603,106	·	·	Indirect