Mark Zagorski

Insider

First SEC filing: April 26, 2024 · Latest: June 17, 2026

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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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 96 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

96 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 30, 2026	DV	M	13,476	—	—	121,280 Direct	-10.00%	Disposed	(price as of 2026-08-19)
June 30, 2026	DV	F	7,453	$10.84	$80,791	580,364 Direct	-1.27%	Disposed	22.9% (price as of 2026-08-19)
June 30, 2026	DV	M	13,476	—	—	587,817 Direct	+2.35%	Acquired	(price as of 2026-08-19)
June 15, 2026	DV	M	9,375	—	—	18,750 Direct	-33.33%	Disposed	(price as of 2026-08-19)
June 15, 2026	DV	M	7,802	—	—	46,807 Direct	-14.29%	Disposed	(price as of 2026-08-19)
June 15, 2026	DV	M	2,757	—	—	5,514 Direct	-33.33%	Disposed	(price as of 2026-08-19)
June 15, 2026	DV	M	15,219	—	—	152,190 Direct	-9.09%	Disposed	(price as of 2026-08-19)
June 15, 2026	DV	M	12,122	—	—	72,727 Direct	-14.29%	Disposed	(price as of 2026-08-19)
June 15, 2026	DV	M	22,919	—	—	229,162 Direct	-9.09%	Disposed	(price as of 2026-08-19)
June 15, 2026	DV	F	4,315	$10.25	$44,229	574,341 Direct	-0.75%	Disposed	30.0% (price as of 2026-08-19)
June 15, 2026	DV	M	7,802	—	—	578,656 Direct	+1.37%	Acquired	(price as of 2026-08-19)
June 15, 2026	DV	F	1,525	$10.25	$15,631	570,854 Direct	-0.27%	Disposed	30.0% (price as of 2026-08-19)
June 15, 2026	DV	M	2,757	—	—	572,379 Direct	+0.48%	Acquired	(price as of 2026-08-19)
June 15, 2026	DV	F	8,417	$10.25	$86,274	569,622 Direct	-1.46%	Disposed	30.0% (price as of 2026-08-19)
June 15, 2026	DV	M	15,219	—	—	578,039 Direct	+2.70%	Acquired	(price as of 2026-08-19)
June 15, 2026	DV	F	6,704	$10.25	$68,716	562,820 Direct	-1.18%	Disposed	30.0% (price as of 2026-08-19)
June 15, 2026	DV	M	12,122	—	—	569,524 Direct	+2.17%	Acquired	(price as of 2026-08-19)
June 15, 2026	DV	F	12,675	$10.25	$129,919	557,402 Direct	-2.22%	Disposed	30.0% (price as of 2026-08-19)
June 15, 2026	DV	M	22,919	—	—	570,077 Direct	+4.19%	Acquired	(price as of 2026-08-19)
May 31, 2026	DV	J	416	$8.25	$3,432	547,158 Direct	+0.08%	Acquired	61.5% (price as of 2026-08-19)
Aug. 19, 2025	DV	A	161,708	—	—	161,708 Direct	—	Acquired	(price as of 2026-08-19)
June 15, 2025	DV	M	9,375	—	—	56,250 Direct	-14.29%	Disposed	(price as of 2026-08-19)
June 15, 2025	DV	M	6,471	—	—	12,942 Direct	-33.33%	Disposed	(price as of 2026-08-19)
June 15, 2025	DV	M	7,802	—	—	78,015 Direct	-9.09%	Disposed	(price as of 2026-08-19)
June 15, 2025	DV	M	2,756	—	—	16,540 Direct	-14.28%	Disposed	(price as of 2026-08-19)
June 15, 2025	DV	M	15,220	—	—	213,066 Direct	-6.67%	Disposed	(price as of 2026-08-19)
June 15, 2025	DV	F	3,579	$14.50	$51,896	453,639 Direct	-0.78%	Disposed	-8.1% (price as of 2026-08-19)
June 15, 2025	DV	M	6,471	—	—	457,218 Direct	+1.44%	Acquired	(price as of 2026-08-19)
June 15, 2025	DV	F	4,315	$14.50	$62,568	450,747 Direct	-0.95%	Disposed	-8.1% (price as of 2026-08-19)
June 15, 2025	DV	M	7,802	—	—	455,062 Direct	+1.74%	Acquired	(price as of 2026-08-19)
June 15, 2025	DV	F	1,525	$14.50	$22,112	447,260 Direct	-0.34%	Disposed	-8.1% (price as of 2026-08-19)
June 15, 2025	DV	M	2,756	—	—	448,785 Direct	+0.62%	Acquired	(price as of 2026-08-19)
June 15, 2025	DV	F	8,417	$14.50	$122,046	446,029 Direct	-1.85%	Disposed	-8.1% (price as of 2026-08-19)
June 15, 2025	DV	M	15,220	—	—	454,446 Direct	+3.47%	Acquired	(price as of 2026-08-19)
May 31, 2025	DV	P	1,141	$11.68	$13,327	439,226 Direct	+0.26%	Acquired	14.0% (price as of 2026-08-19)
March 15, 2025	DV	M	9,375	—	—	65,625 Direct	-12.50%	Disposed	(price as of 2026-08-19)
March 15, 2025	DV	M	6,471	—	—	19,413 Direct	-25.00%	Disposed	(price as of 2026-08-19)
March 15, 2025	DV	M	7,802	—	—	85,817 Direct	-8.33%	Disposed	(price as of 2026-08-19)
March 15, 2025	DV	M	15,220	—	—	228,286 Direct	-6.25%	Disposed	(price as of 2026-08-19)
March 15, 2025	DV	M	13,782	—	—	19,296 Direct	-41.67%	Disposed	(price as of 2026-08-19)
March 15, 2025	DV	F	2,608	$14.36	$37,451	438,085 Direct	-0.59%	Disposed	-7.2% (price as of 2026-08-19)
March 15, 2025	DV	M	6,471	—	—	440,693 Direct	+1.49%	Acquired	(price as of 2026-08-19)
March 15, 2025	DV	F	3,145	$14.36	$45,162	434,222 Direct	-0.72%	Disposed	-7.2% (price as of 2026-08-19)
March 15, 2025	DV	M	7,802	—	—	437,367 Direct	+1.82%	Acquired	(price as of 2026-08-19)
March 15, 2025	DV	F	6,351	$14.36	$91,200	429,565 Direct	-1.46%	Disposed	-7.2% (price as of 2026-08-19)
March 15, 2025	DV	M	15,220	—	—	435,916 Direct	+3.62%	Acquired	(price as of 2026-08-19)
March 15, 2025	DV	F	5,555	$14.36	$79,770	420,696 Direct	-1.30%	Disposed	-7.2% (price as of 2026-08-19)
March 15, 2025	DV	M	13,782	—	—	426,251 Direct	+3.34%	Acquired	(price as of 2026-08-19)
March 13, 2025	DV	A	243,506	—	—	243,506 Direct	—	Acquired	(price as of 2026-08-19)
March 6, 2025	DV	A	33,078	—	—	33,078 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 15, 2024	DV	M	7,802	—	—	93,619 Direct	-7.69%	Disposed	(price as of 2026-08-19)
Dec. 15, 2024	DV	M	9,375	—	—	75,000 Direct	-11.11%	Disposed	(price as of 2026-08-19)
Dec. 15, 2024	DV	M	6,471	—	—	25,884 Direct	-20.00%	Disposed	(price as of 2026-08-19)
Dec. 15, 2024	DV	F	4,315	$20.08	$86,645	412,469 Direct	-1.04%	Disposed	-33.7% (price as of 2026-08-19)
Dec. 15, 2024	DV	M	7,802	—	—	416,784 Direct	+1.91%	Acquired	(price as of 2026-08-19)
Dec. 15, 2024	DV	F	3,579	$20.08	$71,866	408,982 Direct	-0.87%	Disposed	-33.7% (price as of 2026-08-19)
Dec. 15, 2024	DV	M	6,471	—	—	412,561 Direct	+1.59%	Acquired	(price as of 2026-08-19)
Nov. 30, 2024	DV	P	705	$15.30	$10,786	406,090 Direct	+0.17%	Acquired	-12.9% (price as of 2026-08-19)
Sept. 30, 2024	DV	M	10,416	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Sept. 30, 2024	DV	F	5,761	$16.84	$97,015	405,385 Direct	-1.40%	Disposed	-20.9% (price as of 2026-08-19)
Sept. 30, 2024	DV	M	10,416	—	—	411,146 Direct	+2.60%	Acquired	(price as of 2026-08-19)
Sept. 15, 2024	DV	M	7,802	—	—	101,421 Direct	-7.14%	Disposed	(price as of 2026-08-19)
Sept. 15, 2024	DV	M	9,375	—	—	84,375 Direct	-10.00%	Disposed	(price as of 2026-08-19)
Sept. 15, 2024	DV	M	6,471	—	—	32,355 Direct	-16.67%	Disposed	(price as of 2026-08-19)
Sept. 15, 2024	DV	F	4,315	$17.42	$75,167	400,730 Direct	-1.07%	Disposed	-23.5% (price as of 2026-08-19)
Sept. 15, 2024	DV	M	7,802	—	—	405,045 Direct	+1.96%	Acquired	(price as of 2026-08-19)
Sept. 15, 2024	DV	F	3,579	$17.42	$62,346	397,243 Direct	-0.89%	Disposed	-23.5% (price as of 2026-08-19)
Sept. 15, 2024	DV	M	6,471	—	—	400,822 Direct	+1.64%	Acquired	(price as of 2026-08-19)
June 30, 2024	DV	M	10,416	—	—	10,416 Direct	-50.00%	Disposed	(price as of 2026-08-19)
June 30, 2024	DV	F	5,761	$19.47	$112,167	394,351 Direct	-1.44%	Disposed	-31.6% (price as of 2026-08-19)
June 30, 2024	DV	M	10,416	—	—	400,112 Direct	+2.67%	Acquired	(price as of 2026-08-19)
June 15, 2024	DV	M	7,802	—	—	109,223 Direct	-6.67%	Disposed	(price as of 2026-08-19)
June 15, 2024	DV	M	9,375	—	—	93,750 Direct	-9.09%	Disposed	(price as of 2026-08-19)
June 15, 2024	DV	M	6,471	—	—	38,826 Direct	-14.29%	Disposed	(price as of 2026-08-19)
June 15, 2024	DV	F	4,315	$18.70	$80,690	389,696 Direct	-1.10%	Disposed	-28.8% (price as of 2026-08-19)
June 15, 2024	DV	M	7,802	—	—	394,011 Direct	+2.02%	Acquired	(price as of 2026-08-19)
June 15, 2024	DV	F	3,579	$18.70	$66,927	386,209 Direct	-0.92%	Disposed	-28.8% (price as of 2026-08-19)
June 15, 2024	DV	M	6,471	—	—	389,788 Direct	+1.69%	Acquired	(price as of 2026-08-19)
May 31, 2024	DV	P	712	$15.47	$11,015	383,317 Direct	+0.19%	Acquired	-13.9% (price as of 2026-08-19)
March 31, 2024	DV	M	10,417	—	—	20,832 Direct	-33.34%	Disposed	(price as of 2026-08-19)
March 31, 2024	DV	F	5,761	$35.16	$202,557	382,605 Direct	-1.48%	Disposed	-62.1% (price as of 2026-08-19)
March 31, 2024	DV	M	10,417	—	—	388,366 Direct	+2.76%	Acquired	(price as of 2026-08-19)
March 15, 2024	DV	M	7,802	—	—	117,025 Direct	-6.25%	Disposed	(price as of 2026-08-19)
March 15, 2024	DV	M	9,375	—	—	103,125 Direct	-8.33%	Disposed	(price as of 2026-08-19)
March 15, 2024	DV	M	6,471	—	—	45,297 Direct	-12.50%	Disposed	(price as of 2026-08-19)
March 15, 2024	DV	F	3,420	$33.09	$113,168	377,949 Direct	-0.90%	Disposed	-59.7% (price as of 2026-08-19)
March 15, 2024	DV	M	7,802	—	—	381,369 Direct	+2.09%	Acquired	(price as of 2026-08-19)
March 15, 2024	DV	F	2,608	$33.09	$86,299	373,567 Direct	-0.69%	Disposed	-59.7% (price as of 2026-08-19)
March 15, 2024	DV	M	6,471	—	—	376,175 Direct	+1.75%	Acquired	(price as of 2026-08-19)
Dec. 31, 2023	DV	M	10,416	—	—	31,249 Direct	-25.00%	Disposed	(price as of 2026-08-19)
Dec. 31, 2023	DV	F	5,761	$36.78	$211,890	369,704 Direct	-1.53%	Disposed	-63.8% (price as of 2026-08-19)
Dec. 31, 2023	DV	M	10,416	—	—	375,465 Direct	+2.85%	Acquired	(price as of 2026-08-19)
Dec. 19, 2023	DV	A	124,827	—	—	124,827 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 15, 2023	DV	M	9,375	—	—	112,500 Direct	-7.69%	Disposed	(price as of 2026-08-19)
Dec. 15, 2023	DV	M	6,471	—	—	51,768 Direct	-11.11%	Disposed	(price as of 2026-08-19)
Dec. 15, 2023	DV	F	3,579	$35.54	$127,198	364,660 Direct	-0.97%	Disposed	-62.5% (price as of 2026-08-19)
Dec. 15, 2023	DV	M	6,471	—	—	368,239 Direct	+1.79%	Acquired	(price as of 2026-08-19)
Nov. 30, 2023	DV	P	389	$28.22	$10,978	365,049 Direct	+0.11%	Acquired	-52.8% (price as of 2026-08-19)
Sept. 30, 2023	DV	M	10,417	—	—	41,665 Direct	-20.00%	Disposed	(price as of 2026-08-19)
Sept. 30, 2023	DV	F	5,761	$27.95	$161,020	361,768 Direct	-1.57%	Disposed	-52.3% (price as of 2026-08-19)

Showing latest 100 of 157 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
June 30, 2026	DV	Restricted Stock Units	Common Stock (13,476)	—	—	13,476	Disposed
June 15, 2026	DV	Restricted Stock Units	Common Stock (9,375)	—	—	9,375	Disposed
June 15, 2026	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
June 15, 2026	DV	Performance Stock Units	Common Stock (2,757)	—	—	2,757	Disposed
June 15, 2026	DV	Restricted Stock Units	Common Stock (15,219)	—	—	15,219	Disposed
June 15, 2026	DV	Performance Stock Units	Common Stock (12,122)	—	—	12,122	Disposed
June 15, 2026	DV	Restricted Stock Units	Common Stock (22,919)	—	—	22,919	Disposed
Aug. 19, 2025	DV	Restricted Stock Units [F1]	Common Stock (161,708)	—	—	161,708	Acquired
June 15, 2025	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
June 15, 2025	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
June 15, 2025	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
June 15, 2025	DV	Performance Stock Units	Common Stock (2,756)	—	—	2,756	Disposed
June 15, 2025	DV	Restricted Stock Units	Common Stock (15,220)	—	—	15,220	Disposed
March 15, 2025	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
March 15, 2025	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
March 15, 2025	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
March 15, 2025	DV	Restricted Stock Units	Common Stock (15,220)	—	—	15,220	Disposed
March 15, 2025	DV	Performance Stock Units	Common Stock (13,782)	—	—	13,782	Disposed
March 13, 2025	DV	Restricted Stock Units	Common Stock (243,506)	—	—	243,506	Acquired
March 6, 2025	DV	Performance Stock Units [F1]	Common Stock (33,078)	—	—	33,078	Acquired
Dec. 15, 2024	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
Dec. 15, 2024	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
Dec. 15, 2024	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
Sept. 30, 2024	DV	Restricted Stock Units	Common Stock (10,416)	—	—	10,416	Disposed
Sept. 15, 2024	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
Sept. 15, 2024	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
Sept. 15, 2024	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
June 30, 2024	DV	Restricted Stock Units	Common Stock (10,416)	—	—	10,416	Disposed
June 15, 2024	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
June 15, 2024	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
June 15, 2024	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
March 31, 2024	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
March 15, 2024	DV	Restricted Stock Units	Common Stock (7,802)	—	—	7,802	Disposed
March 15, 2024	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
March 15, 2024	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
Dec. 31, 2023	DV	Restricted Stock Units	Common Stock (10,416)	—	—	10,416	Disposed
Dec. 19, 2023	DV	Restricted Stock Units	Common Stock (124,827)	—	—	124,827	Acquired
Dec. 15, 2023	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
Dec. 15, 2023	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
Sept. 30, 2023	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
Sept. 15, 2023	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
Sept. 15, 2023	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
June 30, 2023	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
June 15, 2023	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
June 15, 2023	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
March 31, 2023	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
March 15, 2023	DV	Restricted Stock Units	Common Stock	—	—	9,375	Disposed
March 15, 2023	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
Dec. 31, 2022	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
Dec. 15, 2022	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
Dec. 12, 2022	DV	Options (Rights to Buy)	Common Stock (303,890)	$25.00	Dec. 11, 2032	303,890	Acquired
Dec. 12, 2022	DV	Restricted Stock Units	Common Stock (150,000)	—	—	150,000	Acquired
Sept. 30, 2022	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
Sept. 15, 2022	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
June 30, 2022	DV	Restricted Stock Units	Common Stock (10,417)	—	—	10,417	Disposed
June 15, 2022	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
March 15, 2022	DV	Restricted Stock Units	Common Stock (6,471)	—	—	6,471	Disposed
Dec. 10, 2021	DV	Options (Rights to Buy)	Common Stock (244,729)	$31.39	Dec. 9, 2031	244,729	Acquired
Dec. 10, 2021	DV	Restricted Stock Units	Common Stock (103,536)	—	—	103,536	Acquired
July 21, 2021	DV	Restricted Stock Units	Common Stock	—	—	86,581	Disposed
April 20, 2021	DV	Restricted Stock Units	Common Stock (62,500)	—	—	62,500	Disposed
April 1, 2020	MGNI	Stock Option (Right to Buy)	Common Stock (486,900)	$2.19	July 10, 2027	486,900	Acquired
April 1, 2020	MGNI	Stock Option (Right to Buy)	Common Stock (486,900)	$2.19	July 10, 2027	486,900	Acquired
April 1, 2020	MGNI	Stock Option (Right to Buy)	Common Stock (73,192)	$5.16	Feb. 28, 2029	73,192	Acquired
April 1, 2020	MGNI	Stock Option (Right to Buy)	Common Stock (168,412)	$3.61	Feb. 27, 2028	168,412	Acquired

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
April 26, 2024	TEAD	Common Stock	2,500	Direct
April 20, 2021	DV	Common Stock	184,705	Direct
April 20, 2021	DV	Options (Rights to Buy)→ Common Stock (1,083,333)	1,083,333	Direct
April 20, 2021	DV	Options (Rights to Buy)→ Common Stock (1,083,333)	1,083,333	Direct
April 20, 2021	DV	Restricted Stock Units→ Common Stock (166,667)	166,667	Direct
April 20, 2021	DV	Restricted Stock Units→ Common Stock (86,580)	86,580	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

DV

CEO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2020	$225,641	$349,658	$2,411,837	$4,648,475	—	—	$5,328	$7,640,939

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.