Tzu Yin Chiu Axcelis Technologies Inc (ACLS) insider trading activity

Tzu Yin Chiu is of AXCELIS TECHNOLOGIES INC. Currently has a direct ownership of 10,403 shares of ACLS, which is worth approximately $703,346. The most recent transaction as insider was on May 15, 2025, when has been sold 3,586 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 10.4K

64.68% 3M change

64.68% 12M change

Total Value Held $703,346

Tzu Yin Chiu Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
May 15 2025	BUY Grant, award, or other acquisition	-	3,586 Added 25.63%	10,403 Common Stock
May 15 2024	BUY Grant, award, or other acquisition	-	1,162 Added 15.54%	6,317 Common Stock
May 16 2023	SELL Open market or private sale	$1,942,500 $129.5 p/Share	15,000 Reduced 74.42%	5,155 Common Stock
May 15 2023	BUY Grant, award, or other acquisition	-	1,282 Added 5.98%	20,155 Common Stock
May 09 2023	SELL Open market or private sale	$1,185,000 $118.5 p/Share	10,000 Reduced 34.63%	18,873 Common Stock
Feb 01 2023	SELL Open market or private sale	$216,104 $127.12 p/Share	1,700 Reduced 5.56%	28,873 Common Stock
May 16 2022	BUY Grant, award, or other acquisition	-	2,689 Added 8.08%	30,573 Common Stock
May 17 2021	BUY Grant, award, or other acquisition	-	3,497 Added 11.14%	27,884 Common Stock

TYC

Tzu Yin Chiu

Beverly, MA

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