Scott K. Duff

Insider

First SEC filing: Aug. 1, 2014 · Latest: Jan. 27, 2016

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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

NOV selling Feb. 23, 2021

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 40 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

40 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 28, 2021	NOV	F	1,374	$15.10	$20,747	97,645 Direct	-1.39%	Disposed	38.7% (price as of 2026-08-20)
Feb. 27, 2021	NOV	F	1,527	$15.10	$23,058	99,019 Direct	-1.52%	Disposed	38.7% (price as of 2026-08-20)
Feb. 25, 2021	NOV	F	1,626	$15.50	$25,203	100,546 Direct	-1.59%	Disposed	35.1% (price as of 2026-08-20)
Feb. 23, 2021	NOV	S	10,000	$14.81	$148,100	102,172 Direct	-8.91%	Disposed	41.4% (price as of 2026-08-20)
Feb. 22, 2021	NOV	A	71,178	—	—	71,178 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	NOV	A	27,000	—	—	112,172 Direct	+31.70%	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	NOV	F	4,122	$15.00	$61,830	85,172 Direct	-4.62%	Disposed	39.6% (price as of 2026-08-20)
Feb. 22, 2021	NOV	A	16,928	—	—	89,294 Direct	+23.39%	Acquired	(price as of 2026-08-20)
Feb. 28, 2020	NOV	F	2,221	$18.71	$41,555	72,366 Direct	-2.98%	Disposed	11.9% (price as of 2026-08-20)
Feb. 27, 2020	NOV	F	2,375	$18.82	$44,698	74,587 Direct	-3.09%	Disposed	11.3% (price as of 2026-08-20)
Feb. 25, 2020	NOV	A	69,468	—	—	69,468 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 25, 2020	NOV	A	20,020	—	—	76,962 Direct	+35.16%	Acquired	(price as of 2026-08-20)
Feb. 25, 2020	NOV	F	7,305	$20.23	$147,780	56,942 Direct	-11.37%	Disposed	3.5% (price as of 2026-08-20)
Feb. 25, 2020	NOV	A	30,000	—	—	64,247 Direct	+87.60%	Acquired	(price as of 2026-08-20)
Feb. 22, 2020	NOV	F	1,340	$23.21	$31,101	34,247 Direct	-3.77%	Disposed	-9.8% (price as of 2026-08-20)
Feb. 21, 2020	NOV	S	7,134	$23.30	$166,222	35,587 Direct	-16.70%	Disposed	-10.1% (price as of 2026-08-20)
Feb. 20, 2020	NOV	I	5,558	$24.62	$136,838	0 Indirect	-100.00%	Disposed	-14.9% (price as of 2026-08-20)
Nov. 6, 2019	NOV	S	6,000	$23.51	$141,060	42,721 Direct	-12.32%	Disposed	-10.9% (price as of 2026-08-20)
Feb. 28, 2019	NOV	F	2,221	$28.14	$62,499	48,721 Direct	-4.36%	Disposed	-25.6% (price as of 2026-08-20)
Feb. 28, 2019	NOV	S	15,125	$28.02	$423,802	50,942 Direct	-22.89%	Disposed	-25.3% (price as of 2026-08-20)
Feb. 27, 2019	NOV	A	59,341	—	—	59,341 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 27, 2019	NOV	A	18,802	—	—	66,067 Direct	+39.78%	Acquired	(price as of 2026-08-20)
Feb. 27, 2019	NOV	F	6,833	$28.72	$196,244	47,265 Direct	-12.63%	Disposed	-27.1% (price as of 2026-08-20)
Feb. 27, 2019	NOV	A	24,250	—	—	54,098 Direct	+81.24%	Acquired	(price as of 2026-08-20)
Feb. 24, 2019	NOV	F	1,050	$28.48	$29,904	29,848 Direct	-3.40%	Disposed	-26.5% (price as of 2026-08-20)
Feb. 22, 2019	NOV	F	1,340	$28.48	$38,163	30,898 Direct	-4.16%	Disposed	-26.5% (price as of 2026-08-20)
May 14, 2018	NOV	M	37,369	—	—	37,370 Direct	-50.00%	Disposed	(price as of 2026-08-20)
May 14, 2018	NOV	S	3,090	$40.90	$126,381	32,238 Direct	-8.75%	Disposed	-48.8% (price as of 2026-08-20)
May 14, 2018	NOV	S	37,369	$41.03	$1,533,250	35,328 Direct	-51.40%	Disposed	-49.0% (price as of 2026-08-20)
May 14, 2018	NOV	M	37,369	$28.24	$1,055,301	72,697 Direct	+105.78%	Acquired	-25.8% (price as of 2026-08-20)
March 1, 2018	NOV	S	7,421	$35.66	$264,633	35,328 Direct	-17.36%	Disposed	-41.3% (price as of 2026-08-20)
Feb. 28, 2018	NOV	A	16,928	—	—	42,749 Direct	+65.56%	Acquired	(price as of 2026-08-20)
Feb. 28, 2018	NOV	A	64,353	—	—	64,353 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2018	NOV	F	995	$35.09	$34,915	25,821 Direct	-3.71%	Disposed	-40.3% (price as of 2026-08-20)
Feb. 28, 2018	NOV	A	4,085	—	—	26,816 Direct	+17.97%	Acquired	(price as of 2026-08-20)
Feb. 24, 2018	NOV	F	1,050	$36.07	$37,874	22,731 Direct	-4.42%	Disposed	-41.9% (price as of 2026-08-20)
Feb. 22, 2018	NOV	F	1,340	$35.10	$47,034	23,781 Direct	-5.33%	Disposed	-40.3% (price as of 2026-08-20)
March 1, 2017	NOV	S	4,785	$40.79	$195,180	25,121 Direct	-16.00%	Disposed	-48.7% (price as of 2026-08-20)
Feb. 25, 2017	NOV	F	653	$39.79	$25,983	29,906 Direct	-2.14%	Disposed	-47.4% (price as of 2026-08-20)
Feb. 24, 2017	NOV	M	37,369	—	—	74,739 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Feb. 24, 2017	NOV	S	37,369	$39.87	$1,489,902	30,559 Direct	-55.01%	Disposed	-47.5% (price as of 2026-08-20)
Feb. 24, 2017	NOV	M	37,369	$28.24	$1,055,301	67,928 Direct	+122.28%	Acquired	-25.8% (price as of 2026-08-20)
Feb. 24, 2017	NOV	F	1,259	$39.79	$50,096	30,559 Direct	-3.96%	Disposed	-47.4% (price as of 2026-08-20)
Feb. 22, 2017	NOV	A	65,050	—	—	65,050 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2017	NOV	A	16,500	—	—	31,818 Direct	+107.72%	Acquired	(price as of 2026-08-20)
Aug. 8, 2016	NOV	S	1,606	$34.17	$54,877	15,318 Direct	-9.49%	Disposed	-38.7% (price as of 2026-08-20)
Aug. 5, 2016	NOV	S	1,575	$32.62	$51,376	16,924 Direct	-8.51%	Disposed	-35.8% (price as of 2026-08-20)
Feb. 24, 2016	NOV	A	112,108	—	—	112,108 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2016	NOV	A	12,932	—	—	18,681 Direct	+224.94%	Acquired	(price as of 2026-08-20)
Feb. 15, 2016	NOV	F	780	$27.55	$21,489	5,749 Direct	-11.95%	Disposed	-24.0% (price as of 2026-08-20)
Feb. 25, 2015	NOV	A	37,100	—	—	37,100 Direct	—	Acquired	(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
Feb. 22, 2021	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (71,178)	$15.00	Feb. 23, 2031	71,178	Acquired
Feb. 25, 2020	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (69,468)	$20.23	Feb. 26, 2030	69,468	Acquired
Feb. 27, 2019	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (59,341)	$28.72	Feb. 28, 2029	59,341	Acquired
May 14, 2018	NOV	Non-Qualified Stock Option (right to buy [F1]	Common Stock (37,369)	$28.24	Feb. 25, 2026	37,369	Disposed
Feb. 28, 2018	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (64,353)	$35.09	Feb. 29, 2028	64,353	Acquired
Feb. 24, 2017	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (37,369)	$28.24	Feb. 25, 2026	37,369	Disposed
Feb. 22, 2017	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (65,050)	$38.86	Feb. 23, 2027	65,050	Acquired
Feb. 24, 2016	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (112,108)	$28.24	Feb. 25, 2026	112,108	Acquired
Feb. 25, 2015	NOV	Non-Qualified Stock Option (right to buy)	Common Stock (37,100)	$54.74	Feb. 26, 2025	37,100	Acquired

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

Initial ownership (Form 3) 7 holdings

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

Date	Ticker	Security	Shares	Ownership
Aug. 1, 2014	NOV	Common Stock	2,169	Direct
Aug. 1, 2014	NOV	Common Stock	2,386	Direct
Aug. 1, 2014	NOV	Common Stock	2,386	Direct
Aug. 1, 2014	NOV	Common Stock	4,949	Indirect
Aug. 1, 2014	NOV	Non-Qualified Stock Option (right to buy)→ Common Stock (12,450)	12,450	Direct
Aug. 1, 2014	NOV	Non-Qualified Stock Option (right to buy)→ Common Stock (9,168)	9,168	Direct
Aug. 1, 2014	NOV	Non-Qualified Stock Option (right to buy)→ Common Stock (13,753)	13,753	Direct

Compensation (DEF 14A)

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

NOV

Corporate Controller and Chief Accounting Officer

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2020	—	—	—	—	—	—	—	—
2019	—	—	—	—	—	—	—	—
2018	—	—	—	—	—	—	—	—

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