St Dennis Thomas

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Senior Vice President at APPLIED MATERIALS INC /DE · on record since Sep 8, 2006
Director at FORMFACTOR INC · on record since Sep 14, 2010
Director at JNI CORP · on record since Oct 30, 2003
Director at VEECO INSTRUMENTS INC · on record since May 11, 2026
Director at AXCELIS TECHNOLOGIES INC · on record since May 18, 2026
Director at MATTSON TECHNOLOGY INC · on record since Sep 17, 2013
EXECUTIVE CHAIRMAN at FORMFACTOR INC · on record since May 21, 2015
EVP SALES, SERVICE & MARKETING at NOVELLUS SYSTEMS INC · on record since Aug 12, 2005

Insider trading activity of St Dennis Thomas

Transactions on record: 244; since Oct 30, 2003

Purchases: 2; $88.2K

Sales: 68; $22M

Companies traded: 7; last filing Jun 16, 2026

Figures computed from official regulatory filings — .

Companies where St Dennis Thomas has traded

FORMFACTOR INC163 tx · $26.7M · Jun 16, 2026
AXCELIS TECHNOLOGIES INC22 tx · $2.8M · May 26, 2026
VEECO INSTRUMENTS INC16 tx · $731.3K · May 13, 2026
MATTSON TECHNOLOGY INC10 tx · $417.7K · May 11, 2016
APPLIED MATERIALS INC /DE22 tx · $2.9M · Sep 2, 2009
NOVELLUS SYSTEMS INC8 tx · $447.8K · Aug 12, 2005
JNI CORP3 tx · $459.3K · Oct 30, 2003

Track record of St Dennis Thomas

Insufficient history for a statistical track record (fewer than 5 purchases).

Transaction history of St Dennis Thomas

Co-insiders of St Dennis Thomas

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
FORMFACTOR INCListing on record	Jun 16, 2026	Sell	-2,800	151.49 USD	$424.2K	SEC
FORMFACTOR INCListing on record	Jun 16, 2026	Gift	-740	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 26, 2026	Sell	-900	155.37 USD	$139.8K	SEC
FORMFACTOR INCListing on record	May 21, 2026	Sell	-1,000	115.84 USD	$115.8K	SEC
FORMFACTOR INCListing on record	May 19, 2026	Award	1,347	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 18, 2026	Award	1,440	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	May 13, 2026	Sell	-1,400	61.93 USD	$86.7K	SEC
VEECO INSTRUMENTS INCListing on record	May 11, 2026	Award	2,945	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FORMFACTOR INCListing on record	Feb 11, 2026	Sell	-5,601	93.71 USD	$524.9K	SEC
FORMFACTOR INCListing on record	Feb 11, 2026	Sell	-1,830	94.24 USD	$172.5K	SEC
FORMFACTOR INCListing on record	Nov 17, 2025	Sell	-2,000	49.85 USD	$99.7K	SEC
FORMFACTOR INCListing on record	May 30, 2025	Sell	-3,000	31.24 USD	$93.7K	SEC
FORMFACTOR INCListing on record	May 16, 2025	Award	6,528	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 15, 2025	Award	3,586	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	May 9, 2025	Award	8,291	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FORMFACTOR INCListing on record	Nov 6, 2024	Sell	-3,100	39.11 USD	$121.2K	SEC
FORMFACTOR INCListing on record	May 21, 2024	Award	3,828	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 16, 2024	Award	1,662	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 15, 2024	Award	1,162	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	May 14, 2024	Sell	-4,000	37.72 USD	$150.9K	SEC
FORMFACTOR INCListing on record	May 13, 2024	Sell	-2,000	56.30 USD	$112.6K	SEC
VEECO INSTRUMENTS INCListing on record	May 10, 2024	Award	3,677	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	Dec 1, 2023	Sell	-7,005	28.52 USD	$199.8K	SEC
FORMFACTOR INCListing on record	Nov 15, 2023	Sell	-3,792	38.24 USD	$145K	SEC
FORMFACTOR INCListing on record	May 30, 2023	Award	6,770	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
FORMFACTOR INCListing on record	Jun 16, 2026	Sell	-2,800	151.49 USD	$424.2K	SEC
FORMFACTOR INCListing on record	Jun 16, 2026	Gift	-740	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 26, 2026	Sell	-900	155.37 USD	$139.8K	SEC
FORMFACTOR INCListing on record	May 21, 2026	Sell	-1,000	115.84 USD	$115.8K	SEC
FORMFACTOR INCListing on record	May 19, 2026	Award	1,347	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 18, 2026	Award	1,440	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	May 13, 2026	Sell	-1,400	61.93 USD	$86.7K	SEC
VEECO INSTRUMENTS INCListing on record	May 11, 2026	Award	2,945	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FORMFACTOR INCListing on record	Feb 11, 2026	Sell	-5,601	93.71 USD	$524.9K	SEC
FORMFACTOR INCListing on record	Feb 11, 2026	Sell	-1,830	94.24 USD	$172.5K	SEC
FORMFACTOR INCListing on record	Nov 17, 2025	Sell	-2,000	49.85 USD	$99.7K	SEC
FORMFACTOR INCListing on record	May 30, 2025	Sell	-3,000	31.24 USD	$93.7K	SEC
FORMFACTOR INCListing on record	May 16, 2025	Award	6,528	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 15, 2025	Award	3,586	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	May 9, 2025	Award	8,291	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
FORMFACTOR INCListing on record	Nov 6, 2024	Sell	-3,100	39.11 USD	$121.2K	SEC
FORMFACTOR INCListing on record	May 21, 2024	Award	3,828	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 16, 2024	Award	1,662	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
AXCELIS TECHNOLOGIES INCListing on record	May 15, 2024	Award	1,162	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	May 14, 2024	Sell	-4,000	37.72 USD	$150.9K	SEC
FORMFACTOR INCListing on record	May 13, 2024	Sell	-2,000	56.30 USD	$112.6K	SEC
VEECO INSTRUMENTS INCListing on record	May 10, 2024	Award	3,677	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
VEECO INSTRUMENTS INCListing on record	Dec 1, 2023	Sell	-7,005	28.52 USD	$199.8K	SEC
FORMFACTOR INCListing on record	Nov 15, 2023	Sell	-3,792	38.24 USD	$145K	SEC
FORMFACTOR INCListing on record	May 30, 2023	Award	6,770	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC