Margaret A Treese

Insider

First SEC filing: Nov. 12, 2020 · Latest: March 10, 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.
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

TDC selling Aug. 29, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 41 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

41 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 6, 2025	TDC	F	3,795	$22.98	$87,209	142,253 Direct	-2.60%	Disposed	19.5% (price as of 2026-08-21)
March 3, 2025	TDC	A	46,211	—	—	146,048 Direct	+46.29%	Acquired	(price as of 2026-08-21)
March 3, 2025	TDC	F	3,152	$23.38	$73,694	99,837 Direct	-3.06%	Disposed	17.4% (price as of 2026-08-21)
Feb. 27, 2025	TDC	F	3,430	$23.46	$80,468	102,989 Direct	-3.22%	Disposed	17.0% (price as of 2026-08-21)
Feb. 12, 2025	TDC	F	10,475	$24.62	$257,894	106,419 Direct	-8.96%	Disposed	11.5% (price as of 2026-08-21)
Feb. 12, 2025	TDC	A	20,111	—	—	116,894 Direct	+20.78%	Acquired	(price as of 2026-08-21)
Aug. 29, 2024	TDC	S	5,500	$28.50	$156,750	96,783 Direct	-5.38%	Disposed	-3.7% (price as of 2026-08-21)
March 6, 2024	TDC	F	3,788	$38.82	$147,050	102,283 Direct	-3.57%	Disposed	-29.3% (price as of 2026-08-21)
March 1, 2024	TDC	F	3,146	$38.56	$121,310	106,071 Direct	-2.88%	Disposed	-28.8% (price as of 2026-08-21)
March 1, 2024	TDC	F	2,807	$38.56	$108,238	109,217 Direct	-2.51%	Disposed	-28.8% (price as of 2026-08-21)
Feb. 27, 2024	TDC	A	20,262	—	—	112,024 Direct	+22.08%	Acquired	(price as of 2026-08-21)
Feb. 13, 2024	TDC	F	11,709	$48.79	$571,282	91,762 Direct	-11.32%	Disposed	-43.7% (price as of 2026-08-21)
Feb. 13, 2024	TDC	A	23,670	—	—	103,471 Direct	+29.66%	Acquired	(price as of 2026-08-21)
Nov. 14, 2023	TDC	M	3,247	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 14, 2023	TDC	M	2,901	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 14, 2023	TDC	S	3,247	$47.36	$153,778	79,801 Direct	-3.91%	Disposed	-42.0% (price as of 2026-08-21)
Nov. 14, 2023	TDC	M	3,247	$44.43	$144,264	83,048 Direct	+4.07%	Acquired	-38.2% (price as of 2026-08-21)
Nov. 14, 2023	TDC	S	2,901	$47.38	$137,449	79,801 Direct	-3.51%	Disposed	-42.1% (price as of 2026-08-21)
Nov. 14, 2023	TDC	M	2,901	$45.35	$131,560	82,702 Direct	+3.64%	Acquired	-39.5% (price as of 2026-08-21)
Nov. 14, 2023	TDC	S	3,000	$47.34	$142,020	79,801 Direct	-3.62%	Disposed	-42.0% (price as of 2026-08-21)
Nov. 9, 2023	TDC	F	3,263	$46.14	$150,555	82,801 Direct	-3.79%	Disposed	-40.5% (price as of 2026-08-21)
Sept. 1, 2023	TDC	F	105	$45.87	$4,816	86,064 Direct	-0.12%	Disposed	-40.2% (price as of 2026-08-21)
Aug. 14, 2023	TDC	S	14,592	$44.74	$652,846	86,169 Direct	-14.48%	Disposed	-38.6% (price as of 2026-08-21)
March 6, 2023	TDC	A	22,420	—	—	100,761 Direct	+28.62%	Acquired	(price as of 2026-08-21)
March 1, 2023	TDC	F	3,077	$40.89	$125,819	78,341 Direct	-3.78%	Disposed	-32.9% (price as of 2026-08-21)
March 1, 2023	TDC	F	2,746	$40.89	$112,284	81,418 Direct	-3.26%	Disposed	-32.9% (price as of 2026-08-21)
March 1, 2023	TDC	F	1,451	$40.89	$59,331	84,164 Direct	-1.69%	Disposed	-32.9% (price as of 2026-08-21)
Feb. 13, 2023	TDC	F	26,382	$39.58	$1,044,200	85,615 Direct	-23.56%	Disposed	-30.6% (price as of 2026-08-21)
Feb. 13, 2023	TDC	A	53,902	—	—	111,997 Direct	+92.78%	Acquired	(price as of 2026-08-21)
Nov. 9, 2022	TDC	F	2,731	$29.88	$81,602	58,095 Direct	-4.49%	Disposed	-8.1% (price as of 2026-08-21)
Sept. 1, 2022	TDC	F	73	$32.55	$2,376	60,826 Direct	-0.12%	Disposed	-15.7% (price as of 2026-08-21)
March 1, 2022	TDC	A	18,620	—	—	60,899 Direct	+44.04%	Acquired	(price as of 2026-08-21)
March 1, 2022	TDC	F	1,915	$49.45	$94,697	42,279 Direct	-4.33%	Disposed	-44.5% (price as of 2026-08-21)
March 1, 2022	TDC	F	1,009	$49.45	$49,895	44,194 Direct	-2.23%	Disposed	-44.5% (price as of 2026-08-21)
March 1, 2022	TDC	F	973	$49.45	$48,115	45,203 Direct	-2.11%	Disposed	-44.5% (price as of 2026-08-21)
Feb. 8, 2022	TDC	S 10b5-1	4,000	$45.30	$181,200	46,176 Direct	-7.97%	Disposed	-39.4% (price as of 2026-08-21)
Nov. 9, 2021	TDC	F	3,263	$50.38	$164,390	50,176 Direct	-6.11%	Disposed	-45.5% (price as of 2026-08-21)
Oct. 15, 2021	TDC	M	2,304	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Oct. 15, 2021	TDC	S 10b5-1	2,304	$57.68	$132,895	53,439 Direct	-4.13%	Disposed	-52.4% (price as of 2026-08-21)
Oct. 15, 2021	TDC	M	2,304	$50.70	$116,813	55,743 Direct	+4.31%	Acquired	-45.9% (price as of 2026-08-21)
Sept. 1, 2021	TDC	F	104	$54.66	$5,685	53,439 Direct	-0.19%	Disposed	-49.8% (price as of 2026-08-21)
March 1, 2021	TDC	F	1,451	$42.13	$61,131	53,543 Direct	-2.64%	Disposed	-34.8% (price as of 2026-08-21)
March 1, 2021	TDC	F	1,246	$42.13	$52,494	54,994 Direct	-2.22%	Disposed	-34.8% (price as of 2026-08-21)
March 1, 2021	TDC	A	16,610	—	—	56,240 Direct	+41.91%	Acquired	(price as of 2026-08-21)
March 1, 2021	TDC	S 10b5-1	3,915	$40.03	$156,717	39,630 Direct	-8.99%	Disposed	-31.4% (price as of 2026-08-21)
Feb. 26, 2021	TDC	F	4,060	$41.03	$166,582	43,545 Direct	-8.53%	Disposed	-33.1% (price as of 2026-08-21)
Feb. 25, 2021	TDC	A	7,975	$41.03	$327,214	47,605 Direct	+20.12%	Acquired	-33.1% (price as of 2026-08-21)
Dec. 15, 2020	TDC	F	771	$23.26	$17,933	39,630 Direct	-1.91%	Disposed	18.0% (price as of 2026-08-21)
Nov. 9, 2020	TDC	A	19,743	—	—	40,401 Direct	+95.57%	Acquired	(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.

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
Nov. 14, 2023	TDC	Employee Stock Option	Common Stock (3,247)	$44.43	Nov. 30, 2024	3,247	Disposed
Nov. 14, 2023	TDC	Employee Stock Option	Common Stock (2,901)	$45.35	Dec. 2, 2023	2,901	Disposed
Oct. 15, 2021	TDC	Employee Stock Option	Common Stock (2,304)	$50.70	Nov. 28, 2021	2,304	Disposed

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

Initial ownership (Form 3) 8 holdings

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

Date	Ticker	Security	Shares	Ownership
Nov. 12, 2020	TDC	Common Stock	20,658	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (2,844)	2,844	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (2,304)	2,304	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (2,177)	2,177	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (2,901)	2,901	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (3,247)	3,247	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (2,170)	2,170	Direct
Nov. 12, 2020	TDC	Employee Stock Options→ Common Stock (3,787)	3,787	Direct

Compensation (DEF 14A)

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

TDC

Chief Legal Officer

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2023	$450,000	—	—	—	$342,000	—	$17,960	$3,060,968

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