Katherine Schuelke

CIK 1209874 · View on SEC EDGAR ↗

Insider

First SEC filing: June 2, 2026 · Latest: June 2, 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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 1 sells (S) Net: $-349,025 + 78 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

78 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 11, 2026	SITM	S	500	$698.05	$349,025	12,010 Direct	-4.00%	Disposed	-9.8% (price as of 2026-08-21)
June 1, 2026	SITM	A	390	—	—	12,510 Direct	+3.22%	Acquired	(price as of 2026-08-21)
June 2, 2025	SITM	A	1,290	—	—	12,120 Direct	+11.91%	Acquired	(price as of 2026-08-21)
Dec. 6, 2024	SITM	S	6,933	$227.85	$1,579,684	10,830 Direct	-39.03%	Disposed	176.2% (price as of 2026-08-21)
Aug. 27, 2024	SITM	G	2,000	—	—	17,763 Direct	-10.12%	Disposed	(price as of 2026-08-21)
Dec. 9, 2023	STX	M	499	—	—	5,490 Direct	-8.33%	Disposed	(price as of 2026-08-21)
Dec. 9, 2023	STX	S	248	$80.59	$19,986	29,063 Direct	-0.85%	Disposed	965.8% (price as of 2026-08-21)
Dec. 9, 2023	STX	M	499	—	—	29,311 Direct	+1.73%	Acquired	(price as of 2026-08-21)
Sept. 18, 2023	STX	S 10b5-1	2,346	$64.39	$151,059	28,812 Direct	-7.53%	Disposed	1233.9% (price as of 2026-08-21)
Sept. 15, 2023	STX	F	2,307	$63.75	$147,071	31,158 Direct	-6.89%	Disposed	1247.3% (price as of 2026-08-21)
Sept. 15, 2023	STX	A	4,653	—	—	33,465 Direct	+16.15%	Acquired	(price as of 2026-08-21)
Sept. 13, 2023	STX	S 10b5-1	7,832	$63.10	$494,199	28,812 Direct	-21.37%	Disposed	1261.2% (price as of 2026-08-21)
Sept. 11, 2023	STX	A	10,925	—	—	10,925 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 9, 2023	STX	M	1,996	—	—	5,989 Direct	-25.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2023	STX	M	2,800	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2023	STX	M	1,885	—	—	3,770 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Sept. 9, 2023	STX	M	3,848	—	—	3,848 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2023	STX	M	1,808	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2023	STX	F	927	$65.37	$60,598	36,644 Direct	-2.47%	Disposed	1214.0% (price as of 2026-08-21)
Sept. 9, 2023	STX	M	1,996	—	—	37,571 Direct	+5.61%	Acquired	(price as of 2026-08-21)
Sept. 9, 2023	STX	F	969	$65.37	$63,344	35,575 Direct	-2.65%	Disposed	1214.0% (price as of 2026-08-21)
Sept. 9, 2023	STX	M	2,800	—	—	36,544 Direct	+8.30%	Acquired	(price as of 2026-08-21)
Sept. 9, 2023	STX	F	652	$65.37	$42,621	33,744 Direct	-1.90%	Disposed	1214.0% (price as of 2026-08-21)
Sept. 9, 2023	STX	M	1,885	—	—	34,396 Direct	+5.80%	Acquired	(price as of 2026-08-21)
Sept. 9, 2023	STX	F	1,331	$65.37	$87,007	32,511 Direct	-3.93%	Disposed	1214.0% (price as of 2026-08-21)
Sept. 9, 2023	STX	M	3,848	—	—	33,842 Direct	+12.83%	Acquired	(price as of 2026-08-21)
Sept. 9, 2023	STX	F	626	$65.37	$40,922	29,994 Direct	-2.04%	Disposed	1214.0% (price as of 2026-08-21)
Sept. 9, 2023	STX	M	1,808	—	—	30,620 Direct	+6.28%	Acquired	(price as of 2026-08-21)
May 26, 2023	STX	S	3,487	$62.09	$216,508	28,658 Direct	-10.85%	Disposed	1283.4% (price as of 2026-08-21)
Sept. 12, 2022	STX	F	3,748	$68.77	$257,750	31,968 Direct	-10.49%	Disposed	1149.0% (price as of 2026-08-21)
Sept. 12, 2022	STX	A	7,559	—	—	35,716 Direct	+26.85%	Acquired	(price as of 2026-08-21)
Sept. 10, 2022	STX	M	3,908	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Sept. 10, 2022	STX	F	1,938	$68.83	$133,393	28,157 Direct	-6.44%	Disposed	1147.9% (price as of 2026-08-21)
Sept. 9, 2022	STX	A	2,800	—	—	2,800 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 9, 2022	STX	A	7,985	—	—	7,985 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 9, 2022	STX	M	1,885	—	—	5,655 Direct	-25.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2022	STX	M	3,847	—	—	7,696 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Sept. 9, 2022	STX	M	1,807	—	—	1,808 Direct	-49.99%	Disposed	(price as of 2026-08-21)
Sept. 9, 2022	STX	M	3,908	—	—	30,095 Direct	+14.92%	Acquired	(price as of 2026-08-21)
Sept. 9, 2022	STX	F	720	$68.83	$49,558	26,187 Direct	-2.68%	Disposed	1147.9% (price as of 2026-08-21)
Sept. 9, 2022	STX	M	1,885	—	—	26,907 Direct	+7.53%	Acquired	(price as of 2026-08-21)
Sept. 9, 2022	STX	F	1,331	$68.83	$91,613	25,022 Direct	-5.05%	Disposed	1147.9% (price as of 2026-08-21)
Sept. 9, 2022	STX	M	3,847	—	—	26,353 Direct	+17.09%	Acquired	(price as of 2026-08-21)
Sept. 9, 2022	STX	F	625	$68.83	$43,019	22,506 Direct	-2.70%	Disposed	1147.9% (price as of 2026-08-21)
Sept. 9, 2022	STX	M	1,807	—	—	23,131 Direct	+8.47%	Acquired	(price as of 2026-08-21)
Sept. 10, 2021	STX	F	1,938	$83.92	$162,637	20,893 Direct	-8.49%	Disposed	923.5% (price as of 2026-08-21)
Sept. 10, 2021	STX	M	3,908	—	—	3,908 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Sept. 10, 2021	STX	M	3,908	—	—	22,831 Direct	+20.65%	Acquired	(price as of 2026-08-21)
Sept. 9, 2021	STX	M	1,807	—	—	17,880 Direct	+11.24%	Acquired	(price as of 2026-08-21)
Sept. 9, 2021	STX	F	896	$87.34	$78,257	16,984 Direct	-5.01%	Disposed	883.4% (price as of 2026-08-21)
Sept. 9, 2021	STX	M	3,847	—	—	20,831 Direct	+22.65%	Acquired	(price as of 2026-08-21)
Sept. 9, 2021	STX	F	1,908	$87.34	$166,645	18,923 Direct	-9.16%	Disposed	883.4% (price as of 2026-08-21)
Sept. 9, 2021	STX	M	3,847	—	—	11,543 Direct	-25.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2021	STX	M	1,807	—	—	3,615 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Sept. 9, 2021	STX	A	7,540	—	—	7,540 Direct	—	Acquired	(price as of 2026-08-21)
July 20, 2021	STX	F	3,430	$85.49	$293,231	16,073 Direct	-17.59%	Disposed	904.7% (price as of 2026-08-21)
April 30, 2021	STX	M	20,000	—	—	21,505 Direct	-48.19%	Disposed	(price as of 2026-08-21)
April 30, 2021	STX	S 10b5-1	2,040	$97.01	$197,900	19,503 Direct	-9.47%	Disposed	785.4% (price as of 2026-08-21)
April 30, 2021	STX	S 10b5-1	7,156	$96.09	$687,620	21,543 Direct	-24.93%	Disposed	793.9% (price as of 2026-08-21)
April 30, 2021	STX	S 10b5-1	15,329	$95.34	$1,461,467	28,699 Direct	-34.82%	Disposed	800.9% (price as of 2026-08-21)
April 30, 2021	STX	M	20,000	$39.42	$788,400	44,028 Direct	+83.24%	Acquired	2078.9% (price as of 2026-08-21)
March 5, 2021	STX	S	4,525	$73.20	$331,230	24,028 Direct	-15.85%	Disposed	1073.4% (price as of 2026-08-21)
Sept. 10, 2020	STX	M	3,907	—	—	7,816 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Sept. 10, 2020	STX	F	1,352	$45.93	$62,097	28,291 Direct	-4.56%	Disposed	1770.1% (price as of 2026-08-21)
Sept. 10, 2020	STX	M	3,907	—	—	29,643 Direct	+15.18%	Acquired	(price as of 2026-08-21)
Sept. 9, 2020	STX	M	1,807	—	—	5,422 Direct	-25.00%	Disposed	(price as of 2026-08-21)
Sept. 9, 2020	STX	A	15,390	—	—	15,390 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 9, 2020	STX	F	625	$46.23	$28,894	25,736 Direct	-2.37%	Disposed	1757.9% (price as of 2026-08-21)
Sept. 9, 2020	STX	M	1,807	—	—	26,361 Direct	+7.36%	Acquired	(price as of 2026-08-21)
July 20, 2020	STX	F	2,392	$48.59	$116,227	24,326 Direct	-8.95%	Disposed	1667.7% (price as of 2026-08-21)
Jan. 21, 2020	STX	M	2,306	—	—	41,505 Direct	-5.26%	Disposed	(price as of 2026-08-21)
Jan. 21, 2020	STX	S 10b5-1	2,306	$61.00	$140,666	26,464 Direct	-8.02%	Disposed	1308.1% (price as of 2026-08-21)
Jan. 21, 2020	STX	M	2,306	$39.42	$90,903	28,770 Direct	+8.71%	Acquired	2078.9% (price as of 2026-08-21)
Dec. 20, 2019	STX	M	2,306	—	—	43,811 Direct	-5.00%	Disposed	(price as of 2026-08-21)
Dec. 20, 2019	STX	S 10b5-1	2,306	$59.00	$136,054	26,464 Direct	-8.02%	Disposed	1355.8% (price as of 2026-08-21)
Dec. 20, 2019	STX	M	2,306	$39.42	$90,903	28,770 Direct	+8.71%	Acquired	2078.9% (price as of 2026-08-21)
Nov. 25, 2019	SITM	A	19,231	—	—	19,231 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 20, 2019	STX	M	2,306	—	—	46,117 Direct	-4.76%	Disposed	(price as of 2026-08-21)
Nov. 20, 2019	STX	S 10b5-1	2,306	$59.20	$136,515	26,464 Direct	-8.02%	Disposed	1350.9% (price as of 2026-08-21)
Nov. 20, 2019	STX	M	2,306	$39.42	$90,903	28,770 Direct	+8.71%	Acquired	2078.9% (price as of 2026-08-21)
Nov. 15, 2019	STX	M	62,257	—	—	48,423 Direct	-56.25%	Disposed	(price as of 2026-08-21)
Nov. 15, 2019	STX	S 10b5-1	62,257	$59.00	$3,673,163	26,464 Direct	-70.17%	Disposed	1355.8% (price as of 2026-08-21)
Nov. 15, 2019	STX	M	62,257	$39.42	$2,454,171	88,721 Direct	+235.25%	Acquired	2078.9% (price as of 2026-08-21)
Sept. 10, 2019	STX	M	3,907	—	—	11,723 Direct	-25.00%	Disposed	(price as of 2026-08-21)
Sept. 10, 2019	STX	F	1,352	$55.33	$74,806	26,464 Direct	-4.86%	Disposed	1452.4% (price as of 2026-08-21)
Sept. 10, 2019	STX	M	3,907	—	—	27,816 Direct	+16.34%	Acquired	(price as of 2026-08-21)
Sept. 9, 2019	STX	A	7,229	—	—	7,229 Direct	—	Acquired	(price as of 2026-08-21)
July 20, 2019	STX	F	2,393	$47.30	$113,189	23,663 Direct	-9.18%	Disposed	1715.9% (price as of 2026-08-21)
Sept. 10, 2018	STX	A	15,630	—	—	15,630 Direct	—	Acquired	(price as of 2026-08-21)
July 20, 2018	STX	F	2,393	$56.48	$135,157	25,594 Direct	-8.55%	Disposed	1420.8% (price as of 2026-08-21)
July 20, 2017	STX	A	110,680	—	—	110,680 Direct	—	Acquired	(price as of 2026-08-21)
July 20, 2017	STX	A	27,670	—	—	27,670 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.

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
Dec. 9, 2023	STX	Restricted Share Unit	Ordinary Shares (499)	—	—	499	Disposed
Sept. 11, 2023	STX	Restricted Share Unit	Ordinary Shares (10,925)	$0.00	—	10,925	Acquired
Sept. 9, 2023	STX	Restricted Share Unit	Ordinary Shares (1,996)	—	—	1,996	Disposed
Sept. 9, 2023	STX	Restricted Share Unit	Ordinary Shares (2,800)	—	—	2,800	Disposed
Sept. 9, 2023	STX	Restricted Share Unit	Ordinary Shares (1,885)	—	—	1,885	Disposed
Sept. 9, 2023	STX	Restricted Share Unit	Ordinary Shares (3,848)	—	—	3,848	Disposed
Sept. 9, 2023	STX	Restricted Share Unit	Ordinary Shares (1,808)	—	—	1,808	Disposed
Sept. 10, 2022	STX	Restricted Share Unit	Ordinary Shares (3,908)	—	—	3,908	Disposed
Sept. 9, 2022	STX	Restricted Share Unit	Ordinary Shares (2,800)	$0.00	—	2,800	Acquired
Sept. 9, 2022	STX	Restricted Share Unit	Ordinary Shares (7,985)	$0.00	—	7,985	Acquired
Sept. 9, 2022	STX	Restricted Share Unit	Ordinary Shares (1,885)	—	—	1,885	Disposed
Sept. 9, 2022	STX	Restricted Share Unit	Ordinary Shares (3,847)	—	—	3,847	Disposed
Sept. 9, 2022	STX	Restricted Share Unit	Ordinary Shares (1,807)	—	—	1,807	Disposed
Sept. 10, 2021	STX	Restricted Share Unit	Ordinary Shares (3,908)	—	—	3,908	Disposed
Sept. 9, 2021	STX	Restricted Share Unit	Ordinary Shares (3,847)	—	—	3,847	Disposed
Sept. 9, 2021	STX	Restricted Share Unit	Ordinary Shares (1,807)	—	—	1,807	Disposed
Sept. 9, 2021	STX	Restricted Share Unit	Ordinary Shares (7,540)	—	—	7,540	Acquired
April 30, 2021	STX	NQ Stock Option	Ordinary Shares (20,000)	$39.42	July 20, 2024	20,000	Disposed
Sept. 10, 2020	STX	Restricted Share Unit	Ordinary Shares (3,907)	—	—	3,907	Disposed
Sept. 9, 2020	STX	Restricted Share Unit	Ordinary Shares (1,807)	—	—	1,807	Disposed
Sept. 9, 2020	STX	Restricted Share Unit	Ordinary Shares (15,390)	—	—	15,390	Acquired
Jan. 21, 2020	STX	NQ Stock Option	Ordinary Shares (2,306)	$39.42	July 20, 2024	2,306	Disposed
Dec. 20, 2019	STX	NQ Stock Option	Ordinary Shares (2,306)	$39.42	July 20, 2024	2,306	Disposed
Nov. 20, 2019	STX	NQ Stock Option	Ordinary Shares (2,306)	$39.42	July 20, 2024	2,306	Disposed
Nov. 15, 2019	STX	NQ Stock Option	Ordinary Shares (62,257)	$39.42	July 20, 2024	62,257	Disposed
Sept. 10, 2019	STX	Restricted Share Unit	Ordinary Shares (3,907)	—	—	3,907	Disposed
Sept. 9, 2019	STX	Restricted Share Unit	Ordinary Shares	—	—	7,229	Acquired
Sept. 10, 2018	STX	Restricted Share Unit	Ordinary Shares (15,630)	—	—	15,630	Acquired
July 20, 2017	STX	NQ Stock Option	Ordinary Shares (110,680)	$39.42	July 20, 2024	110,680	Acquired

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

Compensation (DEF 14A)

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

STX

Chief Legal Officer and Company Secretary

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2023	$491,882	—	—	—	—	—	$7,500	$1,704,386

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