Understand Stock

$ACLS

$154.00 -$5.19 (3.26%)

Deep Research with AI Research

Overview

$ACLS Overview Financials SEC Filings Executives News

Specialized Tools

Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

MARY G PUMA

231,976 shares

Net: 0 B/S: -

Russell Low

131,038 shares

Net: -8,959 B/S: -

Arthur L Jr George

58,936 shares

Net: 0 B/S: -

JOHN E ALDEBORGH

37,246 shares

Net: 0 B/S: -

JAMES GORDON COOGAN

37,144 shares

Net: -2,513 B/S: -

JOHN T KURTZWEIL

35,050 shares

Net: 0 B/S: -

RICHARD J FAUBERT

33,625 shares

Net: 0 B/S: -

William J Bintz

32,971 shares

Net: 0 B/S: -

Greg Redinbo

31,938 shares

Net: -1,665 B/S: -

PATRICK H NETTLES

31,360 shares

Net: 0 B/S: -

LYNNETTE C FALLON

27,323 shares

Net: 0 B/S: -

Eileen Evans

24,406 shares

Net: -1,378 B/S: -

Christopher Tatnall

23,044 shares

Net: -2,165 B/S: -

KEVIN J BREWER

19,597 shares

Net: 0 B/S: -

Gerald M Blumenstock

17,540 shares

Net: -4,661 B/S: -

Dennis Thomas St

17,155 shares

Net: 0 B/S: -

Douglas A. Lawson

15,808 shares

Net: 0 B/S: -

Barbara J Lundberg

15,762 shares

Net: 0 B/S: -

Robert John Mahoney

14,633 shares

Net: +1,161 B/S: ∞

Jeanne Quirk

11,749 shares

Net: 0 B/S: -

Tzu Yin Chiu

10,403 shares

Net: 0 B/S: -

Dipti Vachani

9,063 shares

Net: 0 B/S: -

Necip Sayiner

7,258 shares

Net: 0 B/S: -

GREGORY B GRAVES

7,258 shares

Net: 0 B/S: -

Jorge Titinger

6,477 shares

Net: -3,000 B/S: -

JOSEPH P KEITHLEY

3,157 shares

Net: 0 B/S: -

R JOHN FLETCHER

1,354 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
MARY G PUMA	231,976	0	-
Russell Low	131,038	-8,959	-
Arthur L Jr George	58,936	0	-
JOHN E ALDEBORGH	37,246	0	-
JAMES GORDON COOGAN	37,144	-2,513	-
JOHN T KURTZWEIL	35,050	0	-
RICHARD J FAUBERT	33,625	0	-
William J Bintz	32,971	0	-
Greg Redinbo	31,938	-1,665	-
PATRICK H NETTLES	31,360	0	-
LYNNETTE C FALLON	27,323	0	-
Eileen Evans	24,406	-1,378	-
Christopher Tatnall	23,044	-2,165	-
KEVIN J BREWER	19,597	0	-
Gerald M Blumenstock	17,540	-4,661	-
Dennis Thomas St	17,155	0	-
Douglas A. Lawson	15,808	0	-
Barbara J Lundberg	15,762	0	-
Robert John Mahoney	14,633	+1,161	∞
Jeanne Quirk	11,749	0	-
Tzu Yin Chiu	10,403	0	-
Dipti Vachani	9,063	0	-
Necip Sayiner	7,258	0	-
GREGORY B GRAVES	7,258	0	-
Jorge Titinger	6,477	-3,000	-
JOSEPH P KEITHLEY	3,157	0	-
R JOHN FLETCHER	1,354	0	-

Individual Transactions

May 01, 2026

Russell Low

Open Market Sale

Change: -1,244

Price: $138.86

Shares: 131,038

Value: -$172,741

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Russell Low	May 04	Open Market Sale (S) Market Sale	131,038	-1,244	$138.86	-$172,741

April 20, 2026

Christopher Tatnall

Tax Payment

Change: -907

Price: $131.02

Shares: 23,044

Value: -$118,835

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Christopher Tatnall	Apr 21	Tax Payment (F) Tax Payment	23,044	-907	$131.02	-$118,835

April 01, 2026

Russell Low

Open Market Sale

Change: -1,244

Price: $94.06

Shares: 132,282

Value: -$117,010

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Russell Low	Apr 02	Open Market Sale (S) Market Sale	132,282	-1,244	$94.06	-$117,010

March 24, 2026

Russell Low

Open Market Sale

Change: -1,244

Price: $90.00

Shares: 133,526

Value: -$111,960

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Russell Low	Mar 26	Open Market Sale (S) Market Sale	133,526	-1,244	$90.00	-$111,960

March 02, 2026

Robert John Mahoney

Tax Payment

Change: -573

Price: $86.58

Shares: 14,633

Value: -$49,610

Christopher Tatnall

Tax Payment

Change: -1,121

Price: $86.58

Shares: 23,183

Value: -$97,056

Gerald M Blumenstock

Tax Payment

Change: -1,121

Price: $86.58

Shares: 17,540

Value: -$97,056

Greg Redinbo

Tax Payment

Change: -723

Price: $86.58

Shares: 31,938

Value: -$62,597

JAMES GORDON COOGAN

Tax Payment

Change: -1,800

Price: $86.58

Shares: 37,144

Value: -$155,844

Russell Low

Tax Payment

Change: -5,227

Price: $86.58

Shares: 130,928

Value: -$452,553

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Robert John Mahoney	Mar 03	Tax Payment (F) Tax Payment	14,633	-573	$86.58	-$49,610
Christopher Tatnall	Mar 03	Tax Payment (F) Tax Payment	23,183	-1,121	$86.58	-$97,056
Gerald M Blumenstock	Mar 03	Tax Payment (F) Tax Payment	17,540	-1,121	$86.58	-$97,056
Greg Redinbo	Mar 03	Tax Payment (F) Tax Payment	31,938	-723	$86.58	-$62,597
JAMES GORDON COOGAN	Mar 03	Tax Payment (F) Tax Payment	37,144	-1,800	$86.58	-$155,844
Russell Low	Mar 03	Tax Payment (F) Tax Payment	130,928	-5,227	$86.58	-$452,553

February 20, 2026

Jorge Titinger

Open Market Sale

Change: -1,000

Price: $80.00

Shares: 6,477

Value: -$80,000

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jorge Titinger	Feb 23	Open Market Sale (S) Market Sale	6,477	-1,000	$80.00	-$80,000

January 15, 2026

Robert John Mahoney

Grant/Award Acquisition

Change: +1,734

Price: $0.00

Shares: 15,206

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Robert John Mahoney	Jan 16	Grant/Award Acquisition (A) Compensation/Award	15,206	+1,734	$0.00	+$0

December 17, 2025

Jorge Titinger

Open Market Sale

Change: -2,000

Price: $86.05

Shares: 7,477

Value: -$172,100

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jorge Titinger	Dec 18	Open Market Sale (S) Market Sale	7,477	-2,000	$86.05	-$172,100

December 16, 2025

Eileen Evans

Tax Payment

Change: -1,378

Price: $86.32

Shares: 24,406

Value: -$118,948

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Eileen Evans	Dec 18	Tax Payment (F) Tax Payment	24,406	-1,378	$86.32	-$118,948

December 11, 2025

Gerald M Blumenstock

Open Market Sale

Change: -3,034

Price: $89.46

Shares: 18,661

Value: -$271,421

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gerald M Blumenstock	Dec 12	Open Market Sale (S) Market Sale	18,661	-3,034	$89.46	-$271,421

October 16, 2025

JAMES GORDON COOGAN

Tax Payment

Change: -713

Price: $83.62

Shares: 38,944

Value: -$59,621

Insider	Filing Date	Transaction	Shares	Change	Price	Value
JAMES GORDON COOGAN	Oct 17	Tax Payment (F) Tax Payment	38,944	-713	$83.62	-$59,621

September 15, 2025

Christopher Tatnall

Tax Payment

Change: -137

Price: $87.30

Shares: 24,304

Value: -$11,960

Greg Redinbo

Tax Payment

Change: -208

Price: $87.30

Shares: 32,661

Value: -$18,158

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Christopher Tatnall	Sep 17	Tax Payment (F) Tax Payment	24,304	-137	$87.30	-$11,960
Greg Redinbo	Sep 17	Tax Payment (F) Tax Payment	32,661	-208	$87.30	-$18,158

June 16, 2025

Gerald M Blumenstock

Tax Payment

Change: -506

Price: $68.96

Shares: 21,695

Value: -$34,893

Greg Redinbo

Tax Payment

Change: -734

Price: $68.96

Shares: 32,869

Value: -$50,616

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gerald M Blumenstock	Jun 17	Tax Payment (F) Tax Payment	21,695	-506	$68.96	-$34,893
Greg Redinbo	Jun 17	Tax Payment (F) Tax Payment	32,869	-734	$68.96	-$50,616