Mark W Begor

CIK 1335111 · View on SEC EDGAR ↗

Insider

First SEC filing: Oct. 18, 2023 · Latest: Oct. 18, 2023

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Insider at

Insider transactions

0 buys (P) 37 sells (S) Net: $-32,054,965 + 39 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

39 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
July 24, 2026 EFX S 10b5-1 21,543 $172.00 $3,705,396 271,890 Direct -7.34% Disposed 9.3% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 6,200 $171.26 $1,061,812 293,433 Direct -2.07% Disposed 9.8% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 4,112 $172.79 $710,512 299,633 Direct -1.35% Disposed 8.8% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 2,936 $173.79 $510,247 303,745 Direct -0.96% Disposed 8.2% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 1,300 $174.91 $227,383 306,681 Direct -0.42% Disposed 7.5% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 600 $168.47 $101,082 307,981 Direct -0.19% Disposed 11.6% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 600 $169.86 $101,916 308,581 Direct -0.19% Disposed 10.7% (price as of 2026-08-19)
July 24, 2026 EFX S 10b5-1 500 $175.85 $87,925 309,181 Direct -0.16% Disposed 6.9% (price as of 2026-08-19)
April 24, 2026 EFX S 10b5-1 1,717 $174.32 $299,307 307,804 Direct -0.55% Disposed 7.8% (price as of 2026-08-19)
April 24, 2026 EFX S 10b5-1 4,659 $173.39 $807,824 303,145 Direct -1.51% Disposed 8.4% (price as of 2026-08-19)
April 24, 2026 EFX S 10b5-1 10,944 $171.57 $1,877,662 292,201 Direct -3.61% Disposed 9.6% (price as of 2026-08-19)
April 24, 2026 EFX S 10b5-1 20,471 $172.46 $3,530,429 271,730 Direct -7.01% Disposed 9.0% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 201 $197.79 $39,756 269,855 Direct -0.07% Disposed -5.0% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 213 $203.76 $43,401 269,642 Direct -0.08% Disposed -7.7% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 227 $192.89 $43,786 269,415 Direct -0.08% Disposed -2.5% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 331 $194.22 $64,287 269,084 Direct -0.12% Disposed -3.2% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 364 $195.40 $71,126 268,720 Direct -0.14% Disposed -3.8% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 445 $196.43 $87,411 268,275 Direct -0.17% Disposed -4.3% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 829 $199.00 $164,971 267,446 Direct -0.31% Disposed -5.5% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 1,772 $200.03 $354,453 263,915 Direct -0.67% Disposed -6.0% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 4,057 $201.26 $816,512 259,858 Direct -1.54% Disposed -6.6% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 11,000 $203.08 $2,233,880 248,858 Direct -4.23% Disposed -7.4% (price as of 2026-08-19)
Feb. 10, 2026 EFX S 10b5-1 18,352 $202.15 $3,709,857 230,506 Direct -7.37% Disposed -7.0% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 174 $233.88 $40,695 170,719 Direct -0.10% Disposed -19.6% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 204 $235.22 $47,985 170,515 Direct -0.12% Disposed -20.1% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 3,757 $231.46 $869,595 166,758 Direct -2.20% Disposed -18.8% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 4,015 $233.01 $935,535 162,743 Direct -2.41% Disposed -19.3% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 6,227 $229.20 $1,427,228 156,516 Direct -3.83% Disposed -18.0% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 6,639 $230.18 $1,528,165 149,877 Direct -4.24% Disposed -18.3% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 6,943 $232.19 $1,612,095 142,934 Direct -4.63% Disposed -19.0% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 37 $233.95 $8,656 43,394 Indirect -0.09% Disposed -19.6% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 76 $234.93 $17,855 43,318 Indirect -0.18% Disposed -20.0% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 2,801 $233.12 $652,969 40,517 Indirect -6.47% Disposed -19.4% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 3,331 $231.59 $771,426 37,186 Indirect -8.22% Disposed -18.8% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 3,995 $229.12 $915,334 33,191 Indirect -10.74% Disposed -17.9% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 5,274 $232.27 $1,224,992 27,917 Indirect -15.89% Disposed -19.1% (price as of 2026-08-19)
Oct. 27, 2025 EFX S 10b5-1 5,872 $230.16 $1,351,500 22,045 Indirect -21.03% Disposed -18.3% (price as of 2026-08-19)
July 28, 2025 EFX S 10b5-1 364 $244.95 $89,162 190,772 Direct -0.19% Disposed -23.3% (price as of 2026-08-19)
July 28, 2025 EFX S 10b5-1 831 $243.90 $202,681 189,941 Direct -0.44% Disposed -22.9% (price as of 2026-08-19)
July 28, 2025 EFX S 10b5-1 9,497 $242.70 $2,304,922 180,444 Direct -5.00% Disposed -22.5% (price as of 2026-08-19)
July 28, 2025 EFX S 10b5-1 17,731 $241.87 $4,288,597 162,713 Direct -9.83% Disposed -22.3% (price as of 2026-08-19)
July 28, 2025 EFX S 10b5-1 19,841 $240.95 $4,780,689 142,872 Direct -12.19% Disposed -22.0% (price as of 2026-08-19)
April 28, 2025 EFX S 10b5-1 22,160 $256.61 $5,686,478 142,395 Direct -13.47% Disposed -26.7% (price as of 2026-08-19)
Feb. 13, 2025 EFX S 10b5-1 595 $253.60 $150,892 163,809 Direct -0.36% Disposed -25.9% (price as of 2026-08-19)
Feb. 13, 2025 EFX S 10b5-1 1,402 $256.31 $359,347 162,407 Direct -0.86% Disposed -26.7% (price as of 2026-08-19)
Feb. 13, 2025 EFX S 10b5-1 1,600 $252.38 $403,808 160,807 Direct -0.99% Disposed -25.5% (price as of 2026-08-19)
Feb. 13, 2025 EFX S 10b5-1 5,214 $255.27 $1,330,978 155,593 Direct -3.24% Disposed -26.4% (price as of 2026-08-19)
Feb. 13, 2025 EFX S 10b5-1 6,199 $250.74 $1,554,337 149,394 Direct -3.98% Disposed -25.0% (price as of 2026-08-19)
Feb. 13, 2025 EFX S 10b5-1 7,151 $251.60 $1,799,192 142,243 Direct -4.79% Disposed -25.3% (price as of 2026-08-19)
Oct. 25, 2024 EFX S 10b5-1 6,900 $271.68 $1,874,592 160,587 Direct -4.12% Disposed -30.8% (price as of 2026-08-19)
Oct. 25, 2024 EFX S 10b5-1 7,703 $272.32 $2,097,681 152,884 Direct -4.80% Disposed -31.0% (price as of 2026-08-19)
Oct. 25, 2024 EFX S 10b5-1 21,447 $269.49 $5,779,752 131,437 Direct -14.03% Disposed -30.2% (price as of 2026-08-19)
Oct. 25, 2024 EFX S 10b5-1 22,254 $270.45 $6,018,594 109,183 Direct -16.93% Disposed -30.5% (price as of 2026-08-19)
July 26, 2024 EFX S 10b5-1 4,204 $271.04 $1,139,452 163,214 Direct -2.51% Disposed -30.6% (price as of 2026-08-19)
July 26, 2024 EFX S 10b5-1 5,671 $267.54 $1,517,219 157,543 Direct -3.47% Disposed -29.7% (price as of 2026-08-19)
July 26, 2024 EFX S 10b5-1 7,958 $268.04 $2,133,062 149,585 Direct -5.05% Disposed -29.9% (price as of 2026-08-19)
July 26, 2024 EFX S 10b5-1 17,594 $269.38 $4,739,472 131,991 Direct -11.76% Disposed -30.2% (price as of 2026-08-19)
July 26, 2024 EFX S 10b5-1 22,873 $270.24 $6,181,200 109,118 Direct -17.33% Disposed -30.4% (price as of 2026-08-19)
April 26, 2024 EFX S 10b5-1 3,129 $227.06 $710,471 164,391 Direct -1.87% Disposed -17.2% (price as of 2026-08-19)
April 26, 2024 EFX S 10b5-1 18,907 $225.88 $4,270,713 145,484 Direct -11.50% Disposed -16.8% (price as of 2026-08-19)
April 26, 2024 EFX S 10b5-1 36,264 $225.08 $8,162,301 109,220 Direct -24.93% Disposed -16.5% (price as of 2026-08-19)

Showing latest 100 of 207 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
July 24, 2026 EFX Stock Option/Right to Buy Common Stock (37,791) $112.46 May 4, 2028 37,791 Disposed
April 24, 2026 EFX Stock Option/Right to Buy Common Stock (37,791) $112.46 May 4, 2028 37,791 Disposed
Feb. 10, 2026 EFX Stock Option/Right to Buy Common Stock (37,791) $112.46 May 4, 2028 37,791 Disposed
Oct. 27, 2025 EFX Stock Option/Right to Buy Common Stock (27,959) $191.44 Feb. 21, 2026 27,959 Disposed
July 28, 2025 EFX Stock Option/Right to Buy Common Stock (27,960) $191.44 Feb. 21, 2026 27,960 Disposed
April 28, 2025 EFX Stock Option/Right to Buy Common Stock (22,160) $175.48 Feb. 21, 2026 22,160 Disposed
Feb. 13, 2025 EFX Stock Option/Right to Buy Common Stock (22,161) $175.48 Feb. 21, 2026 22,161 Disposed
Feb. 10, 2025 EFX Stock Option/Right to Buy Common Stock (23,519) $303.48 Feb. 10, 2033 23,519 Acquired
Feb. 10, 2025 EFX Stock Option/Right to Buy Common Stock (21,668) $278.19 Feb. 10, 2033 21,668 Acquired
Oct. 25, 2024 EFX Stock Option/Right to Buy Common Stock (58,304) $149.53 Feb. 22, 2025 58,304 Disposed
July 26, 2024 EFX Stock Option/Right to Buy Common Stock (23,892) $138.45 Feb. 22, 2025 23,892 Disposed
July 26, 2024 EFX Stock Option/Right to Buy Common Stock (34,408) $149.53 Feb. 22, 2025 34,408 Disposed
June 30, 2024 NATL Phantom Stock Units [F1] Common Stock (971) 971 Acquired
April 26, 2024 EFX Stock Option/Right to Buy Common Stock (5,297) $127.37 Feb. 22, 2025 5,297 Disposed
April 26, 2024 EFX Stock Option/Right to Buy Common Stock (53,003) $138.45 Feb. 22, 2025 53,003 Disposed
Feb. 28, 2024 EFX Stock Option/Right to Buy Common Stock (58,300) $127.37 Feb. 22, 2025 58,300 Disposed
Feb. 9, 2024 EFX Stock Option/Right to Buy Common Stock (15,662) $299.02 Feb. 9, 2031 15,662 Acquired
Feb. 9, 2024 EFX Stock Option/Right to Buy Common Stock (14,097) $274.10 Feb. 9, 2031 14,097 Acquired
Oct. 16, 2023 NATL Phantom Stock Units [F3] Common Stock (8,318) 8,318 Acquired
Sept. 29, 2023 VYX Phantom Stock Units [F1] Common Stock (951) 951 Acquired
June 30, 2023 VYX Phantom Stock Units [F1] Common Stock (1,017) 1,017 Acquired
March 31, 2023 VYX Phantom Stock Units [F1] Common Stock (1,087) 1,087 Acquired
Feb. 10, 2023 EFX Stock Option/Right to Buy Common Stock (18,346) $247.39 Feb. 10, 2031 18,346 Acquired
Feb. 10, 2023 EFX Stock Option/Right to Buy Common Stock (16,580) $226.78 Feb. 10, 2031 16,580 Acquired
Sept. 30, 2022 VYX Phantom Stock Units [F1] Common Stock (2,335) 2,335 Acquired
July 29, 2022 EFX Stock Option/Right to Buy Common Stock (48,281) $250.69 July 29, 2030 48,281 Acquired
July 29, 2022 EFX Stock Option/Right to Buy Common Stock (43,440) $229.80 July 29, 2030 43,440 Acquired
June 30, 2022 VYX Phantom Stock Units [F1] Common Stock (1,427) 1,427 Acquired
March 31, 2022 VYX Phantom Stock Units [F1] Common Stock (1,105) 1,105 Acquired
Feb. 11, 2022 EFX Stock Option/Right to Buy Common Stock (19,649) $247.50 Feb. 11, 2029 19,649 Acquired
Feb. 11, 2022 EFX Stock Option/Right to Buy Common Stock (17,522) $270.50 Feb. 11, 2029 17,522 Acquired
Jan. 3, 2022 VYX Phantom Stock Units [F1] Common Stock (1,400) 1,400 Acquired
Dec. 31, 2021 VYX Phantom Stock Units [F1] Common Stock (1,104) 1,104 Acquired
Sept. 30, 2021 VYX Phantom Stock Units [F1] Common Stock (1,145) 1,145 Acquired
June 30, 2021 VYX Phantom Stock Units [F1] Common Stock (973) 973 Acquired
March 31, 2021 VYX Phantom Stock Units [F1] Common Stock (653) 653 Acquired
Feb. 12, 2021 EFX Stock Option/Right to Buy Common Stock (30,596) $212.63 Feb. 12, 2028 30,596 Acquired
Feb. 12, 2021 EFX Stock Option/Right to Buy Common Stock (26,751) $194.91 Feb. 12, 2028 26,751 Acquired
Dec. 31, 2020 VYX Phantom Stock Units [F1] Common Stock (659) 659 Acquired
Sept. 30, 2020 VYX Phantom Stock Units [F1] Common Stock (1,118) 1,118 Acquired
June 30, 2020 VYX Phantom Stock Units [F1] Common Stock (1,429) 1,429 Acquired
March 31, 2020 VYX Phantom Stock Units [F1] Common Stock (233) 233 Acquired
Feb. 21, 2020 EFX Stock Option/Right to Buy Common Stock (55,919) $191.44 Feb. 21, 2026 55,919 Acquired
Feb. 21, 2020 EFX Stock Option/Right to Buy Common Stock (44,321) $175.48 Feb. 21, 2026 44,321 Acquired
Feb. 22, 2019 EFX Stock Option/Right to Buy [F3] Common Stock (92,712) $149.53 Feb. 22, 2025 92,712 Acquired
Feb. 22, 2019 EFX Stock Option/Right to Buy [F3] Common Stock (76,895) $138.45 Feb. 22, 2025 76,895 Acquired
Feb. 22, 2019 EFX Stock Option/Right to Buy [F3] Common Stock (63,597) $127.37 Feb. 22, 2025 63,597 Acquired
May 4, 2018 EFX Stock Option/Right to Buy Common Stock (88,919) $112.46 May 4, 2028 88,919 Acquired
May 4, 2018 EFX Stock Option/Right to Buy Common Stock (62,246) $112.46 May 4, 2028 62,246 Acquired
March 21, 2018 FICO Restricted Stock Units Common Stock (1,587) March 21, 2019 1,587 Disposed
Feb. 28, 2018 FICO Non Qualified Stock Option (right to buy) Common Stock (1,324) $169.94 Feb. 27, 2025 1,324 Acquired
Feb. 28, 2018 FICO Restricted Stock Units Common Stock (1,391) 1,391 Acquired
March 21, 2017 FICO Restricted Stock Units Common Stock (1,587) 1,587 Disposed
Feb. 15, 2017 FICO Non-Qualified Option (right-to-buy) Common Stock (2,203) $128.80 Feb. 14, 2024 2,203 Acquired
March 21, 2016 FICO Restricted Stock Units Common Stock (4,760) 4,760 Acquired
March 21, 2016 FICO Non-Qualified Option (right-to-buy) Common Stock (1,894) $104.13 March 20, 2023 1,894 Acquired
Feb. 22, 2006 GE Phantom Stock Units Common Stock (1,057) 1,057 Acquired
Sept. 16, 2005 GE Employee Stock Option (right to buy) Common Stock (90,000) $34.47 Sept. 16, 2015 90,000 Acquired
Sept. 16, 2005 GE Restricted Stock Units Common Stock (20,000) 20,000 Acquired

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

Initial ownership (Form 3) 19 holdings

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

Date Ticker Security Shares Ownership
Oct. 18, 2023 NATL Common Stock 260 Direct
March 21, 2016 FICO Common Stock 0 Direct
Aug. 8, 2005 GE Common Stock 260 Direct
Aug. 8, 2005 GE Common Stock 44,535 Indirect
Aug. 8, 2005 GE Common Stock 9,038 Indirect
Aug. 8, 2005 GE Phantom Stock Units→ Common Stock (6,140) 6,140 Direct
Aug. 8, 2005 GE Restricted Stock Units→ Common Stock (131,250) 131,250 Direct
Aug. 8, 2005 GE Restricted Stock Units→ Common Stock (32,668) 32,668 Direct
Aug. 8, 2005 GE Restricted Stock Units→ Common Stock (50,000) 50,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F6]→ Common Stock (42,000) 42,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F6]→ Common Stock (48,000) 48,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F6]→ Common Stock (66,000) 66,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F6]→ Common Stock (55,000) 55,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F6]→ Common Stock (65,000) 65,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F6]→ Common Stock (32,500) 32,500 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F7]→ Common Stock (100,000) 100,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F7]→ Common Stock (69,000) 69,000 Direct
Aug. 8, 2005 GE Employee Stock Options (right to buy) [F7]→ Common Stock (78,000) 78,000 Direct
Aug. 8, 2005 GE Common Stock [F1] 260 Direct

Compensation (DEF 14A)

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

EFX

CEO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2023 $1,500,000 $0 $2,019,634 $944,110 $0 $505,646 $13,049,808

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