Thomas A South

Insider

First SEC filing: Sept. 5, 2018 · Latest: May 23, 2025

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.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

NTRSO selling Feb. 19, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 33 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

33 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 22, 2025	NTRSO	G	500	—	—	78,091 Direct	-0.64%	Disposed	(price as of 2026-08-20)
March 1, 2025	NTRSO	F	3,203	$110.27	$353,195	78,591 Direct	-3.92%	Disposed	-83.3% (price as of 2026-08-20)
Feb. 19, 2025	NTRSO	S	3,804	$113.00	$429,852	81,794 Direct	-4.44%	Disposed	-83.7% (price as of 2026-08-20)
Feb. 18, 2025	NTRSO	F	7,347	$112.69	$827,933	85,598 Direct	-7.90%	Disposed	-83.7% (price as of 2026-08-20)
Feb. 18, 2025	NTRSO	A	18,190	—	—	92,945 Direct	+24.33%	Acquired	(price as of 2026-08-20)
Feb. 5, 2025	NTRSO	A	25,850	—	—	74,755 Direct	+52.86%	Acquired	(price as of 2026-08-20)
Dec. 3, 2024	NTRSO	F	851	$110.31	$93,874	48,905 Direct	-1.71%	Disposed	-83.3% (price as of 2026-08-20)
Nov. 7, 2024	NTRSO	S	5,000	$105.80	$529,000	49,756 Direct	-9.13%	Disposed	-82.6% (price as of 2026-08-20)
Oct. 28, 2024	NTRSO	G	500	—	—	54,756 Direct	-0.90%	Disposed	(price as of 2026-08-20)
April 23, 2024	NTRSO	G	600	—	—	55,256 Direct	-1.07%	Disposed	(price as of 2026-08-20)
March 1, 2024	NTRSO	F	3,169	$81.90	$259,541	55,856 Direct	-5.37%	Disposed	-77.6% (price as of 2026-08-20)
Feb. 21, 2024	NTRSO	A	9,047	—	—	59,025 Direct	+18.10%	Acquired	(price as of 2026-08-20)
Feb. 20, 2024	NTRSO	F	6,901	$79.51	$548,699	49,978 Direct	-12.13%	Disposed	-76.9% (price as of 2026-08-20)
Feb. 20, 2024	NTRSO	A	16,067	—	—	56,879 Direct	+39.37%	Acquired	(price as of 2026-08-20)
March 1, 2023	NTRSO	F	2,585	$94.49	$244,257	40,812 Direct	-5.96%	Disposed	-80.5% (price as of 2026-08-20)
Feb. 22, 2023	NTRSO	A	8,669	—	—	44,317 Direct	+24.32%	Acquired	(price as of 2026-08-20)
Feb. 21, 2023	NTRSO	F	2,868	$94.70	$271,600	35,648 Direct	-7.45%	Disposed	-80.6% (price as of 2026-08-20)
Feb. 21, 2023	NTRSO	A	9,629	—	—	38,516 Direct	+33.33%	Acquired	(price as of 2026-08-20)
March 1, 2022	NTRSO	F	2,199	$109.14	$239,999	28,887 Direct	-7.07%	Disposed	-83.2% (price as of 2026-08-20)
Feb. 23, 2022	NTRSO	A	7,546	—	—	31,086 Direct	+32.06%	Acquired	(price as of 2026-08-20)
Jan. 18, 2022	NTRSO	F	1,277	$132.16	$168,768	23,540 Direct	-5.15%	Disposed	-86.1% (price as of 2026-08-20)
Jan. 18, 2022	NTRSO	A	4,196	—	—	24,817 Direct	+20.35%	Acquired	(price as of 2026-08-20)
Dec. 9, 2021	NTRSO	S	2,000	$118.22	$236,440	20,621 Direct	-8.84%	Disposed	-84.4% (price as of 2026-08-20)
July 28, 2021	NTRSO	G	444	—	—	22,609 Direct	-1.93%	Disposed	(price as of 2026-08-20)
April 26, 2021	NTRSO	S	1,000	$109.65	$109,650	23,053 Direct	-4.16%	Disposed	-83.2% (price as of 2026-08-20)
March 1, 2021	NTRSO	F	1,261	$98.43	$124,120	24,053 Direct	-4.98%	Disposed	-81.3% (price as of 2026-08-20)
Feb. 22, 2021	NTRSO	F	579	$96.92	$56,117	25,314 Direct	-2.24%	Disposed	-81.0% (price as of 2026-08-20)
Feb. 17, 2021	NTRSO	A	6,554	—	—	25,893 Direct	+33.89%	Acquired	(price as of 2026-08-20)
Dec. 14, 2020	NTRSO	G	300	—	—	19,339 Direct	-1.53%	Disposed	(price as of 2026-08-20)
March 2, 2020	NTRSO	F	826	$86.63	$71,556	19,639 Direct	-4.04%	Disposed	-78.8% (price as of 2026-08-20)
Feb. 21, 2020	NTRSO	F	541	$101.35	$54,830	20,465 Direct	-2.58%	Disposed	-81.9% (price as of 2026-08-20)
Feb. 18, 2020	NTRSO	A	5,832	—	—	21,006 Direct	+38.43%	Acquired	(price as of 2026-08-20)
Feb. 16, 2020	NTRSO	F	789	$100.60	$79,373	15,174 Direct	-4.94%	Disposed	-81.7% (price as of 2026-08-20)
Sept. 13, 2019	NTRSO	S	1,000	$98.54	$98,540	15,963 Direct	-5.90%	Disposed	-81.3% (price as of 2026-08-20)
March 1, 2019	NTRSO	F	437	$93.49	$40,855	16,963 Direct	-2.51%	Disposed	-80.3% (price as of 2026-08-20)
Feb. 19, 2019	NTRSO	A	3,388	—	—	17,400 Direct	+24.18%	Acquired	(price as of 2026-08-20)
Feb. 19, 2019	NTRSO	F	470	$92.83	$43,630	14,012 Direct	-3.25%	Disposed	-80.2% (price as of 2026-08-20)
Feb. 19, 2019	NTRSO	F	789	$92.83	$73,243	14,482 Direct	-5.17%	Disposed	-80.2% (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.

Initial ownership (Form 3) 2 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 5, 2018	NTRSO	Common Stock	16,874	Direct
Sept. 5, 2018	NTRSO	Common Stock	2,071	Indirect

Compensation (DEF 14A)

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

NTRSO

Chief Information Officer

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$656,250	—	—	—	—	—	—	—

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