Skip to main content
TECHi home
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
ACLS logo

NASDAQ NMS - GLOBAL MARKET · Technology · Holders

Axcelis Technologies (ACLS) Insider Trading History

Recent Form 4 insider activity for ACLS, with filters for buys, sales, option exercises, gifts, and tax withholding.

Section freshness

Price Aug 28, 9:38 AM EDT

Ownership read

ACLS insider sentiment: Net selling.

23 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.

Review insider trades

Insider flow

ACLS

Purchases0
Sales806.13K

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Insider stance

Net selling

$103.6M sold / — bought

Latest filing

Jul 15, 2026

Most recent holder or insider filing date

Filings shown

86

86 insider

Latest filing
Jul 15, 2026
Most recent holder or insider filing date
Insider rows
86
Market data source

Recent insider transactions

Axcelis Technologies (ACLS) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

Ryzhik David

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
9.79K
% company
0.03%
Price
$145.01
Value
$1,419,648

Filed Jul 15, 2026

Ryzhik David

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
9.88K
% company
0.03%
Price
$145.01
Value
$1,433,279

Filed Jul 15, 2026

Ryzhik David

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
9.96K
% company
0.03%
Price
$176.85
Value
$1,760,492

Filed Jun 16, 2026

Blumenstock Gerald M

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
19.99K
% company
0.07%
Price
$191.60
Value
$3,829,509

Filed Jun 15, 2026

Sayiner Necip

SaleOpen-market or direct sale reported on Form 4.
Shares
7.11K
% company
0.02%
Price
$157.44
Value
$1,119,729

Filed Jun 3, 2026

Mahoney Robert John

SaleOpen-market or direct sale reported on Form 4.
Shares
14.41K
% company
0.05%
Price
$155.24
Value
$2,237,008

Filed Jun 2, 2026

Sutton Todd

SaleOpen-market or direct sale reported on Form 4.
Shares
6.36K
% company
0.02%
Price
$159.99
Value
$1,017,536

Filed May 27, 2026

St Dennis Thomas

SaleOpen-market or direct sale reported on Form 4.
Shares
17.70K
% company
0.06%
Price
$155.37
Value
$2,749,272

Filed May 22, 2026

Evans Eileen

SaleOpen-market or direct sale reported on Form 4.
Shares
31.30K
% company
0.10%
Price
$155.51
Value
$4,866,538

Filed May 22, 2026

Blumenstock Gerald M

SaleOpen-market or direct sale reported on Form 4.
Shares
20.49K
% company
0.07%
Price
$152.70
Value
$3,129,281

Filed May 21, 2026

Tatnall Christopher

SaleOpen-market or direct sale reported on Form 4.
Shares
27.63K
% company
0.09%
Price
$149.75
Value
$4,137,143

Filed May 20, 2026

Quirk Jeanne

SaleOpen-market or direct sale reported on Form 4.
Shares
11.40K
% company
0.04%
Price
$140.22
Value
$1,598,508

Filed May 19, 2026

Showing 12 of 86 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who is the most active reported ACLS insider?

Low Russell has the largest absolute share movement in the displayed ACLS filing rows, totaling 1.58 million shares. The action labels provide the transaction context.