David Brian Miller

Insider

First SEC filing: Oct. 29, 2019 · Latest: Oct. 29, 2019

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 8 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

8 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 20, 2026	ONTO	A	761	—	—	12,692 Direct	+6.38%	Acquired	(price as of 2026-08-20)
Feb. 13, 2024	ONTO	S	2,800	$170.49	$477,372	9,008 Direct	-23.71%	Disposed	73.9% (price as of 2026-08-20)
May 23, 2023	ONTO	S	3,815	$99.84	$380,890	12,993 Direct	-22.70%	Disposed	196.9% (price as of 2026-08-20)
May 23, 2023	ONTO	S	1,185	$99.21	$117,564	11,808 Direct	-9.12%	Disposed	198.8% (price as of 2026-08-20)
May 9, 2023	ONTO	A	2,200	—	—	16,808 Direct	+15.06%	Acquired	(price as of 2026-08-20)
May 10, 2022	ONTO	A	2,100	—	—	14,608 Direct	+16.79%	Acquired	(price as of 2026-08-20)
Dec. 7, 2021	ONTO	S	5,500	$97.41	$535,755	12,508 Direct	-30.54%	Disposed	204.3% (price as of 2026-08-20)
May 11, 2021	ONTO	A	2,500	—	—	18,008 Direct	+16.12%	Acquired	(price as of 2026-08-20)
Feb. 24, 2021	ONTO	D	6,501	$62.95	$409,238	15,508 Direct	-29.54%	Disposed	370.9% (price as of 2026-08-20)
May 12, 2020	ONTO	A	4,800	—	—	22,009 Direct	+27.89%	Acquired	(price as of 2026-08-20)
Oct. 25, 2019	ONTO	A	3,297	—	—	17,209 Direct	+23.70%	Acquired	(price as of 2026-08-20)
Oct. 25, 2019	ONTO	A	13,912	—	—	13,912 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.

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

Date	Ticker	Security	Shares	Ownership
Oct. 29, 2019	ONTO	No securities beneficially owned	0	Direct