Nuala M King

Insider

First SEC filing: Feb. 5, 2008 · Latest: Feb. 5, 2008

On this page

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

EFX selling Feb. 15, 2017

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 65 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

65 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 1, 2017	EFX	A	1,262	—	—	12,817 Direct	+10.92%	Acquired	(price as of 2026-08-20)
Dec. 1, 2017	EFX	A	5,047	—	—	5,047 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 24, 2017	EFX	F	632	$108.80	$68,762	11,555 Direct	-5.19%	Disposed	77.9% (price as of 2026-08-20)
Feb. 15, 2017	EFX	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 15, 2017	EFX	M	3,334	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 15, 2017	EFX	S	7,954	$129.18	$1,027,498	12,187 Direct	-39.49%	Disposed	49.9% (price as of 2026-08-20)
Feb. 15, 2017	EFX	M	2,000	$49.74	$99,480	20,141 Direct	+11.02%	Acquired	289.2% (price as of 2026-08-20)
Feb. 15, 2017	EFX	M	3,334	$65.52	$218,444	18,141 Direct	+22.52%	Acquired	195.5% (price as of 2026-08-20)
Oct. 28, 2016	EFX	A	3,540	—	—	3,540 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 28, 2016	EFX	A	1,168	—	—	14,807 Direct	+8.56%	Acquired	(price as of 2026-08-20)
Oct. 25, 2016	EFX	F	534	$130.43	$69,650	13,639 Direct	-3.77%	Disposed	48.4% (price as of 2026-08-20)
Oct. 23, 2015	EFX	A	4,002	—	—	4,002 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 23, 2015	EFX	F	668	$106.66	$71,249	14,173 Direct	-4.50%	Disposed	81.5% (price as of 2026-08-20)
Oct. 23, 2015	EFX	A	1,321	—	—	14,841 Direct	+9.77%	Acquired	(price as of 2026-08-20)
Feb. 13, 2015	EFX	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 13, 2015	EFX	M	2,000	—	—	2,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Feb. 13, 2015	EFX	M	1,666	—	—	3,334 Direct	-33.32%	Disposed	(price as of 2026-08-20)
Feb. 13, 2015	EFX	S	10,353	$91.52	$947,507	13,520 Direct	-43.37%	Disposed	111.5% (price as of 2026-08-20)
Feb. 13, 2015	EFX	M	1,666	$65.52	$109,156	23,873 Direct	+7.50%	Acquired	195.5% (price as of 2026-08-20)
Feb. 13, 2015	EFX	M	2,000	$35.52	$71,040	22,207 Direct	+9.90%	Acquired	445.0% (price as of 2026-08-20)
Feb. 13, 2015	EFX	M	2,000	$49.74	$99,480	20,207 Direct	+10.98%	Acquired	289.2% (price as of 2026-08-20)
Oct. 28, 2014	EFX	F	1,199	$75.76	$90,836	18,207 Direct	-6.18%	Disposed	155.5% (price as of 2026-08-20)
Oct. 24, 2014	EFX	A	5,741	—	—	5,741 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 24, 2014	EFX	A	1,895	—	—	19,406 Direct	+10.82%	Acquired	(price as of 2026-08-20)
May 14, 2014	EFX	M	5,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 14, 2014	EFX	M	4,000	—	—	2,000 Direct	-66.67%	Disposed	(price as of 2026-08-20)
May 14, 2014	EFX	M	2,000	—	—	4,000 Direct	-33.33%	Disposed	(price as of 2026-08-20)
May 14, 2014	EFX	M	5,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 14, 2014	EFX	M	4,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 14, 2014	EFX	M	6,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 14, 2014	EFX	S	28,000	$70.63	$1,977,640	17,511 Direct	-61.52%	Disposed	174.1% (price as of 2026-08-20)
May 14, 2014	EFX	M	2,000	$49.74	$99,480	45,511 Direct	+4.60%	Acquired	289.2% (price as of 2026-08-20)
May 14, 2014	EFX	M	4,000	$35.52	$142,080	43,511 Direct	+10.12%	Acquired	445.0% (price as of 2026-08-20)
May 14, 2014	EFX	M	4,500	$23.87	$107,415	39,511 Direct	+12.85%	Acquired	711.0% (price as of 2026-08-20)
May 14, 2014	EFX	M	5,500	$28.90	$158,950	35,011 Direct	+18.64%	Acquired	569.9% (price as of 2026-08-20)
May 14, 2014	EFX	M	5,500	$33.13	$182,215	29,511 Direct	+22.91%	Acquired	484.3% (price as of 2026-08-20)
May 14, 2014	EFX	M	6,500	$41.22	$267,930	24,011 Direct	+37.12%	Acquired	369.7% (price as of 2026-08-20)
Oct. 29, 2013	EFX	F	834	$65.09	$54,285	17,511 Direct	-4.55%	Disposed	197.4% (price as of 2026-08-20)
Oct. 25, 2013	EFX	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 25, 2013	EFX	A	1,600	—	—	18,345 Direct	+9.56%	Acquired	(price as of 2026-08-20)
Dec. 13, 2012	EFX	M	6,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 13, 2012	EFX	M	6,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 13, 2012	EFX	M	7,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 13, 2012	EFX	S	16,403	$53.89	$883,958	17,313 Direct	-48.65%	Disposed	259.2% (price as of 2026-08-20)
Dec. 13, 2012	EFX	F	2,839	$53.28	$151,262	33,716 Direct	-7.77%	Disposed	263.3% (price as of 2026-08-20)
Dec. 13, 2012	EFX	M	6,000	$25.55	$153,300	36,555 Direct	+19.64%	Acquired	657.7% (price as of 2026-08-20)
Dec. 13, 2012	EFX	M	6,000	$36.70	$220,200	30,555 Direct	+24.43%	Acquired	427.5% (price as of 2026-08-20)
Dec. 13, 2012	EFX	M	7,500	$30.30	$227,250	24,555 Direct	+43.98%	Acquired	538.9% (price as of 2026-08-20)
Oct. 26, 2012	EFX	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 26, 2012	EFX	A	2,000	—	—	17,055 Direct	+13.28%	Acquired	(price as of 2026-08-20)
Oct. 23, 2012	EFX	F	812	$49.47	$40,170	15,055 Direct	-5.12%	Disposed	291.3% (price as of 2026-08-20)
Oct. 28, 2011	EFX	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 28, 2011	EFX	A	2,500	—	—	15,867 Direct	+18.70%	Acquired	(price as of 2026-08-20)
Oct. 29, 2010	EFX	A	5,500	—	—	5,500 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 29, 2010	EFX	A	2,500	—	—	13,367 Direct	+23.01%	Acquired	(price as of 2026-08-20)
Feb. 7, 2010	EFX	F	1,133	$31.57	$35,769	10,867 Direct	-9.44%	Disposed	513.2% (price as of 2026-08-20)
Oct. 23, 2009	EFX	A	5,500	—	—	5,500 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 23, 2009	EFX	A	2,500	—	—	12,000 Direct	+26.32%	Acquired	(price as of 2026-08-20)
Feb. 9, 2009	EFX	F	153	$24.59	$3,762	9,500 Direct	-1.58%	Disposed	687.3% (price as of 2026-08-20)
Oct. 22, 2008	EFX	A	1,750	—	—	9,653 Direct	+22.14%	Acquired	(price as of 2026-08-20)
Oct. 22, 2008	EFX	A	4,500	—	—	4,500 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 3, 2008	EFX	F	948	$37.00	$35,076	7,903 Direct	-10.71%	Disposed	423.2% (price as of 2026-08-20)
Feb. 7, 2007	EFX	A	6,500	—	—	6,500 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 7, 2007	EFX	A	3,000	—	—	9,500 Direct	+46.15%	Acquired	(price as of 2026-08-20)
Feb. 9, 2006	EFX	A	6,000	$36.70	$220,200	6,000 Direct	—	Acquired	427.5% (price as of 2026-08-20)
Feb. 9, 2006	EFX	A	2,000	—	—	6,500 Direct	+44.44%	Acquired	(price as of 2026-08-20)
Feb. 3, 2005	EFX	A	7,500	$30.30	$227,250	7,500 Direct	—	Acquired	538.9% (price as of 2026-08-20)
Feb. 3, 2005	EFX	A	2,500	$30.30	$75,750	4,500 Direct	+125.00%	Acquired	538.9% (price as of 2026-08-20)
Aug. 5, 2004	EFX	A	2,000	$24.01	$48,020	2,000 Direct	—	Acquired	706.3% (price as of 2026-08-20)

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, 2017	EFX	Stock Option/Right to Buy	Common Stock (5,047)	$112.93	Dec. 1, 2027	5,047	Acquired
Feb. 15, 2017	EFX	Stock Option/Right to Buy	Common Stock (2,000)	$49.74	Oct. 26, 2022	2,000	Disposed
Feb. 15, 2017	EFX	Stock Option/Right to Buy	Common Stock (3,334)	$65.52	Oct. 25, 2023	3,334	Disposed
Oct. 28, 2016	EFX	Stock Option/Right to Buy	Common Stock (3,540)	$122.00	Oct. 28, 2026	3,540	Acquired
Oct. 23, 2015	EFX	Stock Option/Right to Buy	Common Stock (4,002)	$106.03	Oct. 23, 2025	4,002	Acquired
Feb. 13, 2015	EFX	Stock Option/Right to Buy	Common Stock (2,000)	$35.52	Oct. 28, 2021	2,000	Disposed
Feb. 13, 2015	EFX	Stock Option/Right to Buy	Common Stock (2,000)	$49.74	Oct. 26, 2022	2,000	Disposed
Feb. 13, 2015	EFX	Stock Option/Right to Buy	Common Stock (1,666)	$65.52	Oct. 25, 2023	1,666	Disposed
Oct. 24, 2014	EFX	Stock Option/Right to Buy	Common Stock (5,741)	$73.89	Oct. 24, 2024	5,741	Acquired
May 14, 2014	EFX	Stock Option/Right to Buy	Common Stock (5,500)	$33.13	Oct. 29, 2020	5,500	Disposed
May 14, 2014	EFX	Stock Option/Right to Buy	Common Stock (4,000)	$35.52	Oct. 28, 2021	4,000	Disposed
May 14, 2014	EFX	Stock Option/Right to Buy	Common Stock (2,000)	$49.74	Oct. 26, 2022	2,000	Disposed
May 14, 2014	EFX	Stock Option/Right to Buy	Common Stock (5,500)	$28.90	Oct. 23, 2019	5,500	Disposed
May 14, 2014	EFX	Stock Option/Right to Buy	Common Stock (4,500)	$23.87	Oct. 22, 2018	4,500	Disposed
May 14, 2014	EFX	Stock Option/Right to Buy	Common Stock (6,500)	$41.22	Feb. 7, 2017	6,500	Disposed
Oct. 25, 2013	EFX	Stock Option/Right to Buy	Common Stock (5,000)	$65.52	Oct. 25, 2023	5,000	Acquired
Dec. 13, 2012	EFX	Stock Option/Right to Buy	Common Stock (6,000)	$25.55	March 22, 2014	6,000	Disposed
Dec. 13, 2012	EFX	Stock Option/Right to Buy	Common Stock (6,000)	$36.70	Feb. 9, 2016	6,000	Disposed
Dec. 13, 2012	EFX	Stock Option/Right to Buy	Common Stock (7,500)	$30.30	Feb. 3, 2015	7,500	Disposed
Oct. 26, 2012	EFX	Stock Option/Right to Buy	Common Stock (6,000)	$49.74	Oct. 26, 2022	6,000	Acquired
Oct. 28, 2011	EFX	Stock Option/Right to Buy	Common Stock (6,000)	$35.52	Oct. 28, 2021	6,000	Acquired
Oct. 29, 2010	EFX	Stock Option/Right to Buy	Common Stock (5,500)	$33.13	Oct. 29, 2020	5,500	Acquired
Oct. 23, 2009	EFX	Stock Option/Right to Buy	Common Stock (5,500)	$28.90	Oct. 23, 2019	5,500	Acquired
Oct. 22, 2008	EFX	Stock Option/Right to Buy	Common Stock (4,500)	$23.87	Oct. 22, 2018	4,500	Acquired
Feb. 7, 2007	EFX	Stock Option/Right to Buy	Common Stock (6,500)	$41.22	Feb. 7, 2017	6,500	Acquired
Feb. 9, 2006	EFX	Stock Option/Right to Buy	Common Stock (6,000)	$36.70	Feb. 9, 2016	6,000	Acquired
Feb. 3, 2005	EFX	Stock Option/Right to Buy	Common Stock (7,500)	$30.30	Feb. 3, 2015	7,500	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
March 31, 2004	EFX	Stock Option/Right to Buy→ Common Stock (6,000)	6,000	Direct