Harry K. Sideris

Insider

First SEC filing: Oct. 2, 2019 · Latest: Oct. 2, 2019

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

DUKU selling Feb. 23, 2021

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 39 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

39 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 1, 2025	DUKU	F	2,028	$121.07	$245,530	79,421 Direct	-2.49%	Disposed	-58.2% (price as of 2026-08-20)
Feb. 26, 2025	DUKU	A	25,148	$116.31	$2,924,964	81,449 Direct	+44.67%	Acquired	-56.5% (price as of 2026-08-20)
Feb. 23, 2025	DUKU	F	777	$115.55	$89,782	56,301 Direct	-1.36%	Disposed	-56.2% (price as of 2026-08-20)
Feb. 22, 2025	DUKU	F	930	$115.55	$107,462	57,078 Direct	-1.60%	Disposed	-56.2% (price as of 2026-08-20)
Feb. 7, 2025	DUKU	A	15,450	—	—	63,455 Direct	+32.18%	Acquired	(price as of 2026-08-20)
Feb. 7, 2025	DUKU	F	5,447	$114.99	$626,351	58,008 Direct	-8.58%	Disposed	-56.0% (price as of 2026-08-20)
March 11, 2024	DUKU	A	13,921	—	—	48,005 Direct	+40.84%	Acquired	(price as of 2026-08-20)
Feb. 24, 2024	DUKU	F	642	$92.73	$59,533	34,084 Direct	-1.85%	Disposed	-45.5% (price as of 2026-08-20)
Feb. 23, 2024	DUKU	F	781	$92.73	$72,422	34,726 Direct	-2.20%	Disposed	-45.5% (price as of 2026-08-20)
Feb. 22, 2024	DUKU	F	935	$92.13	$86,142	35,507 Direct	-2.57%	Disposed	-45.1% (price as of 2026-08-20)
Feb. 5, 2024	DUKU	A	13,307	—	—	40,732 Direct	+48.52%	Acquired	(price as of 2026-08-20)
Feb. 5, 2024	DUKU	F	4,290	$95.25	$408,622	36,442 Direct	-10.53%	Disposed	-46.9% (price as of 2026-08-20)
Feb. 24, 2023	DUKU	F	646	$96.92	$62,610	27,425 Direct	-2.30%	Disposed	-47.8% (price as of 2026-08-20)
Feb. 23, 2023	DUKU	F	785	$96.84	$76,019	28,071 Direct	-2.72%	Disposed	-47.8% (price as of 2026-08-20)
Feb. 22, 2023	DUKU	A	6,378	$97.47	$621,664	28,856 Direct	+28.37%	Acquired	-48.1% (price as of 2026-08-20)
Feb. 19, 2023	DUKU	F	340	$99.49	$33,827	22,478 Direct	-1.49%	Disposed	-49.2% (price as of 2026-08-20)
Feb. 6, 2023	DUKU	A	9,193	—	—	25,515 Direct	+56.32%	Acquired	(price as of 2026-08-20)
Feb. 6, 2023	DUKU	F	2,697	$101.81	$274,582	22,818 Direct	-10.57%	Disposed	-50.3% (price as of 2026-08-20)
Feb. 27, 2022	DUKU	F	184	$100.22	$18,440	16,322 Direct	-1.11%	Disposed	-49.5% (price as of 2026-08-20)
Feb. 24, 2022	DUKU	F	570	$97.04	$55,313	16,506 Direct	-3.34%	Disposed	-47.9% (price as of 2026-08-20)
Feb. 23, 2022	DUKU	A	5,329	$97.67	$520,483	17,076 Direct	+45.36%	Acquired	-48.2% (price as of 2026-08-20)
Feb. 19, 2022	DUKU	F	291	$99.81	$29,045	11,747 Direct	-2.42%	Disposed	-49.3% (price as of 2026-08-20)
Feb. 8, 2022	DUKU	M	3,499	$104.41	$365,331	13,069 Direct	+36.56%	Acquired	-51.6% (price as of 2026-08-20)
Feb. 8, 2022	DUKU	F	1,031	$104.41	$107,647	12,038 Direct	-7.89%	Disposed	-51.6% (price as of 2026-08-20)
Feb. 8, 2022	DUKU	M	3,499	—	—	3,499 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2021	DUKU	F	97	$85.59	$8,302	9,570 Direct	-1.00%	Disposed	-40.9% (price as of 2026-08-20)
Feb. 27, 2021	DUKU	F	123	$85.59	$10,528	9,667 Direct	-1.26%	Disposed	-40.9% (price as of 2026-08-20)
Feb. 24, 2021	DUKU	A	4,379	$87.34	$382,462	9,790 Direct	+80.93%	Acquired	-42.1% (price as of 2026-08-20)
Feb. 23, 2021	DUKU	S	1,500	$89.46	$134,190	5,411 Direct	-21.70%	Disposed	-43.5% (price as of 2026-08-20)
Feb. 19, 2021	DUKU	F	293	$88.43	$25,910	6,911 Direct	-4.07%	Disposed	-42.8% (price as of 2026-08-20)
Feb. 9, 2021	DUKU	M	2,605	$93.32	$243,099	8,001 Direct	+48.28%	Acquired	-45.8% (price as of 2026-08-20)
Feb. 9, 2021	DUKU	F	797	$93.32	$74,376	7,204 Direct	-9.96%	Disposed	-45.8% (price as of 2026-08-20)
Feb. 9, 2021	DUKU	M	2,605	—	—	2,605 Direct	—	Acquired	(price as of 2026-08-20)
May 14, 2020	DUKU	S	1,285	$80.42	$103,340	5,396 Direct	-19.23%	Disposed	-37.1% (price as of 2026-08-20)
Feb. 28, 2020	DUKU	F	97	$91.70	$8,895	6,681 Direct	-1.43%	Disposed	-44.8% (price as of 2026-08-20)
Feb. 27, 2020	DUKU	F	123	$94.99	$11,684	6,778 Direct	-1.78%	Disposed	-46.8% (price as of 2026-08-20)
Feb. 22, 2020	DUKU	F	88	$102.43	$9,014	6,901 Direct	-1.26%	Disposed	-50.6% (price as of 2026-08-20)
Feb. 19, 2020	DUKU	A	2,958	$101.42	$300,000	6,989 Direct	+73.38%	Acquired	-50.1% (price as of 2026-08-20)
Feb. 10, 2020	DUKU	M	2,663	$96.23	$256,260	4,850 Direct	+121.76%	Acquired	-47.4% (price as of 2026-08-20)
Feb. 10, 2020	DUKU	F	819	$96.23	$78,812	4,031 Direct	-16.89%	Disposed	-47.4% (price as of 2026-08-20)
Feb. 10, 2020	DUKU	M	2,663	—	—	0 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
Feb. 8, 2022	DUKU	Performance Shares	Common Stock (3,499)	$104.41	—	3,499	Acquired
Feb. 9, 2021	DUKU	Performance Shares	Common Stock (2,605)	$93.32	—	2,605	Acquired
Feb. 10, 2020	DUKU	Performance Shares	Common Stock (2,663)	$96.23	—	2,663	Acquired

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

Initial ownership (Form 3) 3 holdings

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

Date	Ticker	Security	Shares	Ownership
Oct. 2, 2019	DUKU	Common Stock	2,187	Direct
Oct. 2, 2019	DUKU	Common Stock	1,973	Indirect
Oct. 2, 2019	DUKU	Executive Savings Plan→ Common Stock (992)	992	Direct

Compensation (DEF 14A)

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

DUKU

President and CEO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$834,405	—	$4,444,307	—	$742,148	$51,155	$219,224	$6,291,239

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