Donald M Berwick

Insider

First SEC filing: June 25, 2026 · Latest: June 25, 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.

Insider at

NRC selling May 21, 2018

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 18 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

18 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 23, 2026	NRC	A	7,697	—	—	7,697 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 17, 2025	NRC	A	22,625	—	—	22,625 Direct	—	Acquired	(price as of 2026-08-20)
May 7, 2025	NRC	A	34,917	—	—	34,917 Direct	—	Acquired	(price as of 2026-08-20)
May 8, 2024	NRC	A	10,906	—	—	10,906 Direct	—	Acquired	(price as of 2026-08-20)
May 11, 2023	NRC	A	7,386	—	—	7,386 Direct	—	Acquired	(price as of 2026-08-20)
May 21, 2018	NRC	S	14,009	$34.50	$483,310	0 Direct	-100.00%	Disposed	-36.1% (price as of 2026-08-20)
May 18, 2018	NRC	S	11,300	$34.60	$390,980	14,009 Direct	-44.65%	Disposed	-36.2% (price as of 2026-08-20)
May 16, 2018	NRC	M	36,000	—	—	0 Direct	—	Acquired	(price as of 2026-08-20)
May 16, 2018	NRC	F	15,781	$34.65	$546,812	25,309 Direct	+165.63%	Acquired	-36.3% (price as of 2026-08-20)
May 16, 2018	NRC	M	36,000	$15.19	$546,840	41,090 Direct	+707.27%	Acquired	45.2% (price as of 2026-08-20)
April 17, 2018	NRC	D	6,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 17, 2018	NRC	D	6,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 17, 2018	NRC	D	6,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 17, 2018	NRC	A	5,090	—	—	5,090 Direct	—	Acquired	(price as of 2026-08-20)
May 9, 2017	NRC	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
May 9, 2017	NRC	A	36,000	—	—	36,000 Direct	—	Acquired	(price as of 2026-08-20)
May 11, 2016	NRC	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
May 11, 2016	NRC	A	36,000	—	—	36,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 21, 2015	NRC	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 21, 2015	NRC	A	36,000	—	—	36,000 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
Oct. 17, 2025	NRC	Director Stock Option (Right to Buy) [F1]	Common Stock (22,625)	$11.61	Oct. 17, 2035	22,625	Acquired
May 7, 2025	NRC	Director Stock Option (Right to Buy)	Common Stock (34,917)	$13.09	May 7, 2035	34,917	Acquired
May 8, 2024	NRC	Director Stock Option (Right to Buy)	Common Stock (10,906)	$29.76	May 8, 2034	10,906	Acquired
May 11, 2023	NRC	Director Stock Option (Right to Buy)	Common Stock (7,386)	$43.15	May 11, 2033	7,386	Acquired
May 16, 2018	NRC	Director Stock Option (Right to Buy)	Common Stock (36,000)	$15.19	Oct. 21, 2025	36,000	Acquired
April 17, 2018	NRC	Director Stock Option (Right to Buy)	Class B Common Stock (6,000)	$44.47	May 9, 2027	6,000	Disposed
April 17, 2018	NRC	Director Stock Option (Right to Buy)	Class B Common Stock (6,000)	$37.78	May 11, 2026	6,000	Disposed
April 17, 2018	NRC	Director Stock Option (Right to Buy)	Class B Common Stock (6,000)	$32.09	Oct. 21, 2025	6,000	Disposed
May 9, 2017	NRC	Director Stock Option (Right to Buy)	Class B Common Stock (6,000)	$44.47	May 9, 2027	6,000	Acquired
May 9, 2017	NRC	Director Stock Option (Right to Buy)	Class A Common Stock (36,000)	$24.35	May 9, 2027	36,000	Acquired
May 11, 2016	NRC	Director Stock Option (Right to Buy)	Class B Common Stock (6,000)	$37.78	May 11, 2026	6,000	Acquired
May 11, 2016	NRC	Director Stock Option (Right to Buy)	Class A Common Stock (36,000)	$14.19	May 11, 2026	36,000	Acquired
Oct. 21, 2015	NRC	Director Stock Option (Right to Buy)	Class B Common Stock (6,000)	$32.09	Oct. 21, 2025	6,000	Acquired
Oct. 21, 2015	NRC	Director Stock Option (Right to Buy)	Class A Common Stock (36,000)	$15.19	Oct. 21, 2025	36,000	Acquired

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