Erik J. Romslo

Insider

First SEC filing: Jan. 3, 2013 · Latest: Jan. 3, 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.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

NOG selling Feb. 3, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 54 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

54 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 15, 2025	NOG	F	4,927	$29.39	$144,805	97,189 Direct	-4.82%	Disposed	-8.0% (price as of 2026-08-21)
March 10, 2025	NOG	A	5,722	—	—	102,116 Direct	+5.94%	Acquired	(price as of 2026-08-21)
Feb. 3, 2025	NOG	S 10b5-1	1,500	$35.63	$53,445	96,394 Direct	-1.53%	Disposed	-24.1% (price as of 2026-08-21)
Jan. 2, 2025	NOG	S 10b5-1	1,500	$37.69	$56,535	97,894 Direct	-1.51%	Disposed	-28.3% (price as of 2026-08-21)
Dec. 29, 2024	NOG	F	3,319	$36.04	$119,617	99,394 Direct	-3.23%	Disposed	-25.0% (price as of 2026-08-21)
Dec. 2, 2024	NOG	S 10b5-1	1,500	$43.41	$65,115	102,713 Direct	-1.44%	Disposed	-37.7% (price as of 2026-08-21)
Nov. 1, 2024	NOG	S 10b5-1	1,500	$36.72	$55,080	104,213 Direct	-1.42%	Disposed	-26.4% (price as of 2026-08-21)
Oct. 1, 2024	NOG	S 10b5-1	1,500	$35.26	$52,890	105,713 Direct	-1.40%	Disposed	-23.3% (price as of 2026-08-21)
Aug. 23, 2024	NOG	S 10b5-1	1,500	$38.44	$57,660	107,213 Direct	-1.38%	Disposed	-29.7% (price as of 2026-08-21)
Aug. 20, 2024	NOG	A	4,047	—	—	108,713 Direct	+3.87%	Acquired	(price as of 2026-08-21)
July 31, 2024	NOG	S 10b5-1	522	$43.80	$22,864	104,666 Direct	-0.50%	Disposed	-38.3% (price as of 2026-08-21)
March 15, 2024	NOG	F	9,025	$37.91	$342,138	105,188 Direct	-7.90%	Disposed	-28.7% (price as of 2026-08-21)
March 4, 2024	NOG	A	7,201	—	—	114,213 Direct	+6.73%	Acquired	(price as of 2026-08-21)
Dec. 29, 2023	NOG	A	26,976	—	—	107,012 Direct	+33.70%	Acquired	(price as of 2026-08-21)
Aug. 25, 2023	NOG	S	7,500	$40.73	$305,475	80,036 Direct	-8.57%	Disposed	-33.6% (price as of 2026-08-21)
March 15, 2023	NOG	F	14,075	$26.68	$375,521	87,536 Direct	-13.85%	Disposed	1.3% (price as of 2026-08-21)
March 3, 2023	NOG	A	3,911	—	—	101,611 Direct	+4.00%	Acquired	(price as of 2026-08-21)
Jan. 24, 2023	NOG	A	5,859	—	—	97,700 Direct	+6.38%	Acquired	(price as of 2026-08-21)
Jan. 24, 2023	NOG	A	11,719	—	—	91,841 Direct	+14.63%	Acquired	(price as of 2026-08-21)
Nov. 4, 2022	NOG	S 10b5-1	1,238	$35.80	$44,320	80,122 Direct	-1.52%	Disposed	-24.5% (price as of 2026-08-21)
Oct. 20, 2022	NOG	S 10b5-1	13,762	$35.81	$492,817	81,360 Direct	-14.47%	Disposed	-24.5% (price as of 2026-08-21)
April 29, 2022	NOG	A	4,504	—	—	95,122 Direct	+4.97%	Acquired	(price as of 2026-08-21)
March 15, 2022	NOG	F	11,745	$24.64	$289,397	90,618 Direct	-11.47%	Disposed	9.7% (price as of 2026-08-21)
Dec. 8, 2021	NOG	A	15,429	—	—	102,363 Direct	+17.75%	Acquired	(price as of 2026-08-21)
March 15, 2021	NOG	F	8,936	$13.91	$124,300	86,934 Direct	-9.32%	Disposed	94.4% (price as of 2026-08-21)
Feb. 12, 2021	NOG	A	13,605	—	—	95,870 Direct	+16.54%	Acquired	(price as of 2026-08-21)
June 17, 2020	NOG	A	140,351	—	—	691,005 Direct	+25.49%	Acquired	(price as of 2026-08-21)
April 8, 2020	NOG	F	9,440	$0.84	$7,930	550,654 Direct	-1.69%	Disposed	221.8% (price as of 2026-08-21)
March 15, 2020	NOG	F	52,829	$0.95	$50,188	560,094 Direct	-8.62%	Disposed	184.6% (price as of 2026-08-21)
Dec. 31, 2019	NOG	D	25,000	—	—	612,923 Direct	-3.92%	Disposed	(price as of 2026-08-21)
Aug. 6, 2019	NOG	P	32,052	$1.56	$50,001	637,923 Direct	+5.29%	Acquired	73.3% (price as of 2026-08-21)
June 28, 2019	NOG	D	25,000	—	—	605,871 Direct	-3.96%	Disposed	(price as of 2026-08-21)
April 8, 2019	NOG	F	9,440	$2.74	$25,866	630,871 Direct	-1.47%	Disposed	-1.3% (price as of 2026-08-21)
March 15, 2019	NOG	F	58,461	$2.53	$147,906	640,311 Direct	-8.37%	Disposed	6.9% (price as of 2026-08-21)
Jan. 4, 2019	NOG	A	150,000	—	—	698,772 Direct	+27.33%	Acquired	(price as of 2026-08-21)
June 1, 2018	NOG	F	47,200	$2.70	$127,440	548,772 Direct	-7.92%	Disposed	0.1% (price as of 2026-08-21)
June 1, 2018	NOG	A	100,000	—	—	595,972 Direct	+20.16%	Acquired	(price as of 2026-08-21)
June 1, 2018	NOG	A	150,000	—	—	495,972 Direct	+43.36%	Acquired	(price as of 2026-08-21)
April 8, 2018	NOG	F	9,440	$1.48	$13,971	345,972 Direct	-2.66%	Disposed	82.7% (price as of 2026-08-21)
March 15, 2018	NOG	F	34,548	$2.06	$71,169	355,412 Direct	-8.86%	Disposed	31.2% (price as of 2026-08-21)
March 8, 2018	NOG	A	48,076	—	—	389,960 Direct	+14.06%	Acquired	(price as of 2026-08-21)
March 1, 2018	NOG	F	13,144	$2.20	$28,917	341,884 Direct	-3.70%	Disposed	22.9% (price as of 2026-08-21)
April 8, 2017	NOG	F	10,360	$2.45	$25,382	355,028 Direct	-2.84%	Disposed	10.3% (price as of 2026-08-21)
March 15, 2017	NOG	F	20,169	$2.60	$52,439	365,388 Direct	-5.23%	Disposed	4.0% (price as of 2026-08-21)
March 13, 2017	NOG	F	3,525	$2.70	$9,518	385,557 Direct	-0.91%	Disposed	0.1% (price as of 2026-08-21)
March 10, 2017	NOG	A	103,055	—	—	389,082 Direct	+36.03%	Acquired	(price as of 2026-08-21)
March 1, 2017	NOG	F	13,904	$3.20	$44,493	286,027 Direct	-4.64%	Disposed	-15.5% (price as of 2026-08-21)
April 8, 2016	NOG	A	80,000	—	—	299,931 Direct	+36.38%	Acquired	(price as of 2026-08-21)
March 13, 2016	NOG	F	3,525	$3.91	$13,783	219,931 Direct	-1.58%	Disposed	-30.9% (price as of 2026-08-21)
March 10, 2016	NOG	A	116,806	—	—	223,456 Direct	+109.52%	Acquired	(price as of 2026-08-21)
March 1, 2016	NOG	F	13,829	$3.33	$46,051	106,650 Direct	-11.48%	Disposed	-18.8% (price as of 2026-08-21)
Dec. 1, 2015	NOG	F	2,569	$4.95	$12,717	120,479 Direct	-2.09%	Disposed	-45.4% (price as of 2026-08-21)
April 1, 2015	NOG	F	582	$8.01	$4,662	123,048 Direct	-0.47%	Disposed	-66.2% (price as of 2026-08-21)
March 13, 2015	NOG	F	2,532	$7.09	$17,952	123,630 Direct	-2.01%	Disposed	-61.9% (price as of 2026-08-21)
Feb. 27, 2015	NOG	A	76,961	—	—	126,162 Direct	+156.42%	Acquired	(price as of 2026-08-21)
Jan. 1, 2015	NOG	F	821	$5.78	$4,745	49,201 Direct	-1.64%	Disposed	-53.2% (price as of 2026-08-21)
Dec. 1, 2014	NOG	F	2,341	$8.37	$19,594	50,022 Direct	-4.47%	Disposed	-67.7% (price as of 2026-08-21)
Oct. 1, 2014	NOG	F	738	$13.82	$10,199	52,363 Direct	-1.39%	Disposed	-80.4% (price as of 2026-08-21)
July 1, 2014	NOG	F	738	$16.49	$12,170	53,101 Direct	-1.37%	Disposed	-83.6% (price as of 2026-08-21)
April 1, 2014	NOG	F	738	$14.46	$10,671	53,839 Direct	-1.35%	Disposed	-81.3% (price as of 2026-08-21)
March 13, 2014	NOG	A	20,415	—	—	54,577 Direct	+59.76%	Acquired	(price as of 2026-08-21)
Jan. 1, 2014	NOG	F	777	$14.49	$11,259	34,162 Direct	-2.22%	Disposed	-81.3% (price as of 2026-08-21)
Dec. 1, 2013	NOG	F	2,200	$16.11	$35,442	34,939 Direct	-5.92%	Disposed	-83.2% (price as of 2026-08-21)
Oct. 1, 2013	NOG	F	694	$15.63	$10,847	37,139 Direct	-1.83%	Disposed	-82.7% (price as of 2026-08-21)
April 1, 2013	NOG	F	680	$14.14	$9,615	37,833 Direct	-1.77%	Disposed	-80.9% (price as of 2026-08-21)

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.

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Jan. 3, 2013	NOG	Common Stock	38,513	Direct

Compensation (DEF 14A)

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

NOG

Chief Legal Officer & Secretary

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$487,500	—	$588,861	—	$444,530	—	$127,455	$1,648,346
2024	$475,000	—	$1,051,649	—	$426,221	—	$123,381	$2,076,251
2023	$440,000	—	$2,467,261	—	$336,614	—	$99,054	$3,342,930

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