Mark Joseph Welzenbach

Insider

First SEC filing: May 22, 2013 · Latest: May 22, 2013

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

THG selling Nov. 4, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 78 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

78 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 31, 2022	THG	F	37	$135.13	$5,000	19,828 Direct	-0.19%	Disposed	65.7% (price as of 2026-08-21)
Dec. 30, 2022	THG	A	19	—	—	19,865 Direct	+0.10%	Acquired	(price as of 2026-08-21)
Nov. 4, 2022	THG	S	900	$143.02	$128,718	19,846 Direct	-4.34%	Disposed	56.6% (price as of 2026-08-21)
Nov. 4, 2022	THG	S	1,773	$142.04	$251,837	20,746 Direct	-7.87%	Disposed	57.6% (price as of 2026-08-21)
Nov. 4, 2022	THG	S	2,673	$142.21	$380,127	19,846 Direct	-11.87%	Disposed	57.5% (price as of 2026-08-21)
Sept. 30, 2022	THG	A	18	—	—	22,519 Direct	+0.08%	Acquired	(price as of 2026-08-21)
June 24, 2022	THG	A	16	—	—	22,501 Direct	+0.07%	Acquired	(price as of 2026-08-21)
March 25, 2022	THG	A	16	—	—	22,485 Direct	+0.07%	Acquired	(price as of 2026-08-21)
March 7, 2022	THG	F	1,077	$139.52	$150,263	22,470 Direct	-4.57%	Disposed	60.5% (price as of 2026-08-21)
Feb. 28, 2022	THG	A	4,380	—	—	4,380 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 28, 2022	THG	A	896	—	—	23,546 Direct	+3.96%	Acquired	(price as of 2026-08-21)
Feb. 28, 2022	THG	A	936	—	—	22,650 Direct	+4.31%	Acquired	(price as of 2026-08-21)
Feb. 28, 2022	THG	A	1,672	—	—	21,714 Direct	+8.34%	Acquired	(price as of 2026-08-21)
Feb. 4, 2022	THG	M	4,686	—	—	2,343 Direct	-66.67%	Disposed	(price as of 2026-08-21)
Feb. 4, 2022	THG	M	10,377	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 4, 2022	THG	S	4,686	$140.42	$658,008	20,042 Direct	-18.95%	Disposed	59.5% (price as of 2026-08-21)
Feb. 4, 2022	THG	M	4,686	$117.22	$549,293	24,728 Direct	+23.38%	Acquired	91.0% (price as of 2026-08-21)
Feb. 4, 2022	THG	S	10,377	$138.50	$1,437,214	20,042 Direct	-34.11%	Disposed	61.7% (price as of 2026-08-21)
Feb. 4, 2022	THG	M	10,377	$104.11	$1,080,349	30,419 Direct	+51.78%	Acquired	115.1% (price as of 2026-08-21)
Dec. 30, 2021	THG	A	19	—	—	20,042 Direct	+0.09%	Acquired	(price as of 2026-08-21)
Sept. 24, 2021	THG	A	17	—	—	20,023 Direct	+0.08%	Acquired	(price as of 2026-08-21)
July 30, 2021	THG	M	6,065	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
July 30, 2021	THG	S	6,065	$136.53	$828,054	20,006 Direct	-23.26%	Disposed	64.0% (price as of 2026-08-21)
July 30, 2021	THG	M	6,065	$85.87	$520,802	26,071 Direct	+30.32%	Acquired	160.8% (price as of 2026-08-21)
June 25, 2021	THG	A	17	—	—	20,006 Direct	+0.09%	Acquired	(price as of 2026-08-21)
May 3, 2021	THG	S	4,645	$139.82	$649,464	19,989 Direct	-18.86%	Disposed	60.1% (price as of 2026-08-21)
March 26, 2021	THG	A	18	—	—	24,634 Direct	+0.07%	Acquired	(price as of 2026-08-21)
March 1, 2021	THG	F	997	$119.67	$119,311	24,616 Direct	-3.89%	Disposed	87.1% (price as of 2026-08-21)
Feb. 26, 2021	THG	A	5,964	—	—	5,964 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 26, 2021	THG	A	1,084	—	—	25,613 Direct	+4.42%	Acquired	(price as of 2026-08-21)
Feb. 26, 2021	THG	A	3,304	—	—	24,529 Direct	+15.57%	Acquired	(price as of 2026-08-21)
Dec. 30, 2020	THG	A	13	—	—	21,225 Direct	+0.06%	Acquired	(price as of 2026-08-21)
Sept. 25, 2020	THG	A	16	—	—	21,212 Direct	+0.08%	Acquired	(price as of 2026-08-21)
June 26, 2020	THG	A	15	—	—	21,197 Direct	+0.07%	Acquired	(price as of 2026-08-21)
March 27, 2020	THG	A	15	—	—	21,182 Direct	+0.07%	Acquired	(price as of 2026-08-21)
Feb. 28, 2020	THG	A	8,655	—	—	8,655 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 28, 2020	THG	A	1,054	—	—	21,167 Direct	+5.24%	Acquired	(price as of 2026-08-21)
Feb. 24, 2020	THG	F	1,528	$134.22	$205,088	20,113 Direct	-7.06%	Disposed	66.8% (price as of 2026-08-21)
Feb. 24, 2020	THG	A	3,934	—	—	21,641 Direct	+22.22%	Acquired	(price as of 2026-08-21)
Feb. 11, 2020	THG	M	5,189	—	—	10,377 Direct	-33.34%	Disposed	(price as of 2026-08-21)
Feb. 11, 2020	THG	M	1,318	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 11, 2020	THG	S	5,189	$138.66	$719,507	17,707 Direct	-22.66%	Disposed	61.5% (price as of 2026-08-21)
Feb. 11, 2020	THG	M	5,189	$104.11	$540,227	22,896 Direct	+29.30%	Acquired	115.1% (price as of 2026-08-21)
Feb. 11, 2020	THG	S	1,318	$138.74	$182,859	17,707 Direct	-6.93%	Disposed	61.4% (price as of 2026-08-21)
Feb. 11, 2020	THG	M	1,318	$77.91	$102,685	19,025 Direct	+7.44%	Acquired	187.4% (price as of 2026-08-21)
Feb. 6, 2020	THG	M	3,700	$77.91	$288,267	21,407 Direct	+20.90%	Acquired	187.4% (price as of 2026-08-21)
Feb. 6, 2020	THG	S	3,700	$139.01	$514,337	17,707 Direct	-17.28%	Disposed	61.1% (price as of 2026-08-21)
Feb. 6, 2020	THG	M	6,065	$85.87	$520,802	23,772 Direct	+34.25%	Acquired	160.8% (price as of 2026-08-21)
Feb. 6, 2020	THG	S	6,065	$138.77	$841,640	17,707 Direct	-25.51%	Disposed	61.4% (price as of 2026-08-21)
Feb. 6, 2020	THG	M	3,700	—	—	1,318 Direct	-73.73%	Disposed	(price as of 2026-08-21)
Feb. 6, 2020	THG	M	6,065	—	—	6,065 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Dec. 27, 2019	THG	A	25	—	—	17,707 Direct	+0.14%	Acquired	(price as of 2026-08-21)
Sept. 27, 2019	THG	A	5	—	—	17,682 Direct	+0.03%	Acquired	(price as of 2026-08-21)
June 28, 2019	THG	A	5	—	—	17,677 Direct	+0.03%	Acquired	(price as of 2026-08-21)
March 29, 2019	THG	A	6	—	—	17,673 Direct	+0.03%	Acquired	(price as of 2026-08-21)
March 5, 2019	THG	A	6,903	—	—	6,903 Direct	—	Acquired	(price as of 2026-08-21)
March 5, 2019	THG	A	1,048	—	—	17,667 Direct	+6.31%	Acquired	(price as of 2026-08-21)
Feb. 25, 2019	THG	F	940	$118.02	$110,939	16,619 Direct	-5.35%	Disposed	89.7% (price as of 2026-08-21)
Feb. 7, 2019	THG	S	2,216	$115.24	$255,372	17,559 Direct	-11.21%	Disposed	94.3% (price as of 2026-08-21)
Feb. 1, 2019	THG	S	7,402	$113.05	$836,796	19,775 Direct	-27.24%	Disposed	98.1% (price as of 2026-08-21)
Jan. 23, 2019	THG	A	1,703	—	—	27,177 Direct	+6.69%	Acquired	(price as of 2026-08-21)
May 4, 2018	THG	M	5,710	—	—	11,420 Direct	-33.33%	Disposed	(price as of 2026-08-21)
May 4, 2018	THG	M	4,723	—	—	4,724 Direct	-49.99%	Disposed	(price as of 2026-08-21)
May 4, 2018	THG	M	4,800	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 4, 2018	THG	S	5,710	$115.59	$660,019	25,413 Direct	-18.35%	Disposed	93.7% (price as of 2026-08-21)
May 4, 2018	THG	M	5,710	$91.19	$520,695	31,123 Direct	+22.47%	Acquired	145.6% (price as of 2026-08-21)
May 4, 2018	THG	S	4,723	$115.59	$545,932	25,413 Direct	-15.67%	Disposed	93.7% (price as of 2026-08-21)
May 4, 2018	THG	M	4,723	$82.74	$390,781	30,136 Direct	+18.58%	Acquired	170.6% (price as of 2026-08-21)
May 4, 2018	THG	S	4,800	$115.59	$554,832	25,413 Direct	-15.89%	Disposed	93.7% (price as of 2026-08-21)
May 4, 2018	THG	M	4,800	$70.24	$337,152	30,213 Direct	+18.89%	Acquired	218.8% (price as of 2026-08-21)
Feb. 27, 2018	THG	A	14,655	—	—	14,655 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 27, 2018	THG	F	1,036	$110.57	$114,551	25,413 Direct	-3.92%	Disposed	102.5% (price as of 2026-08-21)
Feb. 27, 2018	THG	A	1,928	—	—	26,449 Direct	+7.86%	Acquired	(price as of 2026-08-21)
Nov. 7, 2017	THG	M	4,723	$82.74	$390,781	29,244 Direct	+19.26%	Acquired	170.6% (price as of 2026-08-21)
Nov. 7, 2017	THG	S	4,723	$106.09	$501,063	24,521 Direct	-16.15%	Disposed	111.1% (price as of 2026-08-21)
Nov. 7, 2017	THG	M	4,723	—	—	9,447 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Nov. 3, 2017	THG	M	5,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 3, 2017	THG	S	5,000	$103.89	$519,450	24,521 Direct	-16.94%	Disposed	115.5% (price as of 2026-08-21)
Nov. 3, 2017	THG	M	5,000	$42.49	$212,450	29,521 Direct	+20.39%	Acquired	427.0% (price as of 2026-08-21)
Aug. 9, 2017	THG	M	9,600	—	—	4,800 Direct	-66.67%	Disposed	(price as of 2026-08-21)
Aug. 9, 2017	THG	S	9,600	$97.94	$940,224	24,521 Direct	-28.14%	Disposed	128.6% (price as of 2026-08-21)
Aug. 9, 2017	THG	M	9,600	$70.24	$674,304	34,121 Direct	+39.15%	Acquired	218.8% (price as of 2026-08-21)
Feb. 27, 2017	THG	M	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 27, 2017	THG	S	10,000	$90.29	$902,900	24,521 Direct	-28.97%	Disposed	148.0% (price as of 2026-08-21)
Feb. 27, 2017	THG	M	10,000	$57.99	$579,900	34,521 Direct	+40.78%	Acquired	286.1% (price as of 2026-08-21)
Feb. 24, 2017	THG	A	17,130	—	—	17,130 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 21, 2017	THG	F	1,418	$90.65	$128,542	24,521 Direct	-5.47%	Disposed	147.0% (price as of 2026-08-21)
Feb. 16, 2017	THG	A	2,550	—	—	25,939 Direct	+10.90%	Acquired	(price as of 2026-08-21)
Feb. 26, 2016	THG	F	698	$83.76	$58,464	23,389 Direct	-2.90%	Disposed	167.3% (price as of 2026-08-21)
Feb. 26, 2016	THG	F	1,047	$83.76	$87,697	24,087 Direct	-4.17%	Disposed	167.3% (price as of 2026-08-21)
Feb. 23, 2016	THG	A	3,225	—	—	25,134 Direct	+14.72%	Acquired	(price as of 2026-08-21)
Feb. 23, 2016	THG	A	1,415	—	—	21,909 Direct	+6.90%	Acquired	(price as of 2026-08-21)
Feb. 23, 2016	THG	A	14,170	—	—	14,170 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 17, 2016	THG	M	1,400	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 17, 2016	THG	S	1,400	$82.05	$114,870	20,494 Direct	-6.39%	Disposed	172.9% (price as of 2026-08-21)
Feb. 17, 2016	THG	M	1,400	$36.81	$51,534	21,894 Direct	+6.83%	Acquired	508.3% (price as of 2026-08-21)
Feb. 16, 2016	THG	M	4,850	—	—	1,400 Direct	-77.60%	Disposed	(price as of 2026-08-21)
Feb. 16, 2016	THG	S	4,850	$82.12	$398,282	20,494 Direct	-19.14%	Disposed	172.7% (price as of 2026-08-21)
Feb. 16, 2016	THG	M	4,850	$36.81	$178,528	25,344 Direct	+23.67%	Acquired	508.3% (price as of 2026-08-21)
Jan. 20, 2016	THG	F	967	$76.90	$74,362	20,494 Direct	-4.51%	Disposed	191.2% (price as of 2026-08-21)

Showing latest 100 of 145 transactions

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
Feb. 28, 2022	THG	Common Stock Option (right to buy)	Common Stock (4,380)	$139.51	Feb. 28, 2032	4,380	Acquired
Feb. 4, 2022	THG	Common Stock Option (right to buy)	Common Stock (4,686)	$117.22	March 5, 2029	4,686	Disposed
Feb. 4, 2022	THG	Common Stock Option (right to buy)	Common Stock (10,377)	$104.11	Feb. 27, 2028	10,377	Disposed
July 30, 2021	THG	Common Stock Option (right to buy)	Common Stock (6,065)	$85.87	Feb. 24, 2027	6,065	Disposed
Feb. 26, 2021	THG	Common Stock Option (right to buy)	Common Stock (5,964)	$115.35	Feb. 26, 2031	5,964	Acquired
Feb. 28, 2020	THG	Common Stock Option (right to buy)	Common Stock (8,655)	$118.54	Feb. 28, 2030	8,655	Acquired
Feb. 11, 2020	THG	Common Stock Option (right to buy)	Common Stock (5,189)	$104.11	Feb. 27, 2028	5,189	Disposed
Feb. 11, 2020	THG	Common Stock Option (right to buy)	Common Stock (1,318)	$77.91	Feb. 23, 2026	1,318	Disposed
Feb. 6, 2020	THG	Common Stock Option (right to buy)	Common Stock (3,700)	$77.91	Feb. 23, 2026	3,700	Disposed
Feb. 6, 2020	THG	Common Stock Option (right to buy)	Common Stock (6,065)	$85.87	Feb. 24, 2027	6,065	Disposed
March 5, 2019	THG	Common Stock Option (right to buy)	Common Stock (6,903)	$119.36	March 5, 2029	6,903	Acquired
May 4, 2018	THG	Common Stock Option (right to buy)	Common Stock (5,710)	$91.19	Feb. 24, 2027	5,710	Disposed
May 4, 2018	THG	Common Stock Option (right to buy)	Common Stock (4,723)	$82.74	Feb. 23, 2026	4,723	Disposed
May 4, 2018	THG	Common Stock Option (right to buy)	Common Stock (4,800)	$70.24	Feb. 27, 2025	4,800	Disposed
Feb. 27, 2018	THG	Common Stock Option (right to buy)	Common Stock (14,655)	$110.57	Feb. 27, 2028	14,655	Acquired
Nov. 7, 2017	THG	Common Stock Option (right to buy)	Common Stock (4,723)	$82.74	Feb. 23, 2026	4,723	Disposed
Nov. 3, 2017	THG	Common Stock Option (right to buy)	Common Stock (5,000)	$42.49	Feb. 26, 2023	5,000	Disposed
Aug. 9, 2017	THG	Common Stock Option (right to buy)	Common Stock (9,600)	$70.24	Feb. 27, 2025	9,600	Disposed
Feb. 27, 2017	THG	Common Stock Option (right to buy)	Common Stock (10,000)	$57.99	Feb. 19, 2024	10,000	Disposed
Feb. 24, 2017	THG	Common Stock Option (right to buy)	Common Stock (17,130)	$91.19	Feb. 24, 2027	17,130	Acquired
Feb. 23, 2016	THG	Common Stock Option (right to buy)	Common Stock (14,170)	$82.74	Feb. 23, 2026	14,170	Acquired
Feb. 17, 2016	THG	Common Stock Option (right to buy)	Common Stock (1,400)	$36.81	Jan. 20, 2022	1,400	Disposed
Feb. 16, 2016	THG	Common Stock Option (right to buy)	Common Stock (4,850)	$36.81	Jan. 20, 2022	4,850	Disposed
July 31, 2015	THG	Common Stock Option (right to buy)	Common Stock (5,000)	$57.99	Feb. 19, 2024	5,000	Disposed
July 31, 2015	THG	Common Stock Option (right to buy)	Common Stock (5,000)	$46.47	Feb. 28, 2021	5,000	Disposed
May 6, 2015	THG	Common Stock Option (right to buy)	Common Stock (5,000)	$42.49	Feb. 26, 2023	5,000	Disposed
Feb. 27, 2015	THG	Common Stock Option (right to buy)	Common Stock (14,400)	$70.24	Feb. 27, 2025	14,400	Acquired
Feb. 6, 2015	THG	Common Stock Option (right to buy)	Common Stock (6,250)	$36.81	Jan. 20, 2022	6,250	Disposed
May 2, 2014	THG	Common Stock Option (right to buy)	Common Stock (5,000)	$42.49	Feb. 26, 2023	5,000	Disposed
May 2, 2014	THG	Common Stock Option (right to buy)	Common Stock (5,000)	$46.47	Feb. 28, 2021	5,000	Disposed
May 2, 2014	THG	Common Stock Option (right to buy)	Common Stock (2,500)	$42.15	Feb. 26, 2020	2,500	Disposed
Feb. 19, 2014	THG	Common Stock Option (right to buy)	Common Stock (15,000)	$57.99	Feb. 19, 2024	15,000	Acquired
Aug. 7, 2013	THG	Common Stock Option (right to buy)	Common Stock (2,500)	$42.15	Feb. 26, 2020	2,500	Disposed
Aug. 7, 2013	THG	Common Stock Option (right to buy)	Common Stock (5,415)	$48.46	Feb. 23, 2017	5,415	Disposed

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

Initial ownership (Form 3) 6 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
May 22, 2013	THG	Common Stock	25,736	Direct
May 22, 2013	THG	Common Stock Option (right to buy)→ Common Stock (5,415)	5,415	Direct
May 22, 2013	THG	Common Stock Option (right to buy)→ Common Stock (5,000)	5,000	Direct
May 22, 2013	THG	Common Stock Option (right to buy)→ Common Stock (10,000)	10,000	Direct
May 22, 2013	THG	Common Stock Option (right to buy)→ Common Stock (12,500)	12,500	Direct
May 22, 2013	THG	Common Stock Option (right to buy)→ Common Stock (15,000)	15,000	Direct