Diane W Strong-Treister

Insider

First SEC filing: Feb. 7, 2018 · Latest: April 20, 2026

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.

Insider at

CHCO buying July 21, 2026

Insider transactions

5 buys (P) 0 sells (S) Net: $74,392 + 10 non-open-market transactions below Avg return of open purchases vs now: 18.7% 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

10 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 21, 2026	CHCO	P 10b5-1	110	$134.55	$14,800	4,097 Direct	+2.76%	Acquired	7.2% (price as of 2026-08-21)
April 20, 2026	CHCO	P 10b5-1	119	$126.36	$15,037	3,987 Direct	+3.08%	Acquired	14.2% (price as of 2026-08-21)
March 9, 2026	CHCO	P 10b5-1	126	$115.88	$14,601	3,868 Direct	+3.37%	Acquired	24.5% (price as of 2026-08-21)
March 9, 2026	CHCO	P 10b5-1	129	$115.88	$14,949	3,871 Direct	+3.45%	Acquired	24.5% (price as of 2026-08-21)
Jan. 28, 2026	CHCO	A	265	—	—	3,742 Direct	+7.62%	Acquired	(price as of 2026-08-21)
Oct. 16, 2025	CHCO	P	128	$117.23	$15,005	3,477 Direct	+3.82%	Acquired	23.1% (price as of 2026-08-21)
July 28, 2025	CHCO	P	102	$127.05	$12,959	3,349 Direct	+3.14%	Acquired	13.5% (price as of 2026-08-21)
May 7, 2025	CHCO	P	120	$116.72	$14,006	3,247 Direct	+3.84%	Acquired	23.6% (price as of 2026-08-21)
March 26, 2025	CHCO	A	266	—	—	3,127 Direct	+9.30%	Acquired	(price as of 2026-08-21)
March 25, 2025	CHCO	P 10b5-1	116	$119.85	$13,903	2,861 Direct	+4.23%	Acquired	20.4% (price as of 2026-08-21)
Oct. 10, 2024	CHCO	P 10b5-1	132	$115.02	$15,183	2,745 Direct	+5.05%	Acquired	25.4% (price as of 2026-08-21)
Aug. 12, 2024	CHCO	P 10b5-1	114	$110.83	$12,635	2,613 Direct	+4.56%	Acquired	30.2% (price as of 2026-08-21)
April 16, 2024	CHCO	P 10b5-1	136	$97.73	$13,291	2,499 Direct	+5.76%	Acquired	47.6% (price as of 2026-08-21)
Feb. 28, 2024	CHCO	A	321	—	—	2,363 Direct	+15.72%	Acquired	(price as of 2026-08-21)
Feb. 27, 2024	CHCO	P 10b5-1	121	$101.03	$12,225	2,042 Direct	+6.30%	Acquired	42.8% (price as of 2026-08-21)
Feb. 27, 2024	CHCO	A	121	$101.03	$12,225	2,042 Direct	+6.30%	Acquired	42.8% (price as of 2026-08-21)
Feb. 22, 2023	CHCO	A	321	—	—	1,921 Direct	+20.06%	Acquired	(price as of 2026-08-21)
Jan. 26, 2022	CHCO	A	369	—	—	1,600 Direct	+29.98%	Acquired	(price as of 2026-08-21)
Aug. 5, 2021	CHCO	A	1,000	$76.10	$76,100	1,900 Indirect	+111.11%	Acquired	89.6% (price as of 2026-08-21)
Jan. 27, 2021	CHCO	A	422	—	—	1,231 Direct	+52.16%	Acquired	(price as of 2026-08-21)
Feb. 3, 2020	CHCO	P	700	$76.50	$53,550	900 Indirect	+350.00%	Acquired	88.6% (price as of 2026-08-21)
Jan. 29, 2020	CHCO	A	395	—	—	809 Direct	+95.41%	Acquired	(price as of 2026-08-21)
Jan. 30, 2019	CHCO	A	414	—	—	414 Direct	—	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.

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Feb. 7, 2018	CHCO	Common Stock	0	Direct