Quick Takeaways
- ACLS - AXCELIS TECHNOLOGIES INC has 25 insiders with reported activity on this page.
- Net insider value flow over the last year: -$856,659.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 25 Insiders of AXCELIS TECHNOLOGIES INC
- Symbol
- ACLS on Nasdaq
- Location
- Beverly, MA
What Changed
- Buy value: ; sell value: $856,658.
- Net share flow: -10,204.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$856,659.
Buys
$0
Shares: 0
Insiders: 0
Sells
$856,659
Shares: 10,204
Insiders: 4
Net
-$856,659
Shares: -10,204
Insiders: -4
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 3,488 | $0 | $308,971 | -$308,971 |
| 3-6 | 0 | 5,034 | $0 | $443,522 | -$443,522 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 1,682 | $0 | $104,166 | -$104,166 |
AXCELIS TECHNOLOGIES INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Mary G. Puma | EXECUTIVE CHAIRPERSON, Director | $26,787,767 | Mixed | 09 May 2024 | ||
| Russell Low | PRESIDENT AND CEO, Director | $12,442,444 | -$228,971 | -1.8% | Filing P/S | 01 Apr 2026 |
| Arthur L. George Jr. | Director | $8,280,508 | Mixed | 17 May 2021 | ||
| Richard J. Faubert | Director | $4,724,313 | Mixed | 12 Aug 2022 | ||
| William J. Bintz | EVP, Product Development | $4,379,807 | Mixed | 23 Nov 2022 | ||
| James Gordon Coogan | Evp And Cfo | $3,215,927 | Mixed | 02 Mar 2026 | ||
| Greg Redinbo | Evp Marketing And Applications | $2,765,192 | Mixed | 02 Mar 2026 | ||
| Kevin J. Brewer | EVP & Chief Financial Officer | $2,753,379 | Mixed | 06 Dec 2023 | ||
| Kurtzweil John T. | Director | $2,170,646 | -$104,166 | -4.6% | Filing P/S | 20 May 2025 |
| Douglas A. Lawson | Evp, Corporate Mktg & Strategy | $2,150,204 | Mixed | 20 Jun 2024 | ||
| Eileen J. Evans | EVP, General Counsel and Sec'y | $2,106,725 | Mixed | 16 Dec 2025 | ||
| Christopher Tatnall | EVP Global Customer Operations | $2,007,184 | Mixed | 02 Mar 2026 | ||
| Lynnette C. Fallon | Executive Vp, Hr/Legal | $1,966,163 | Mixed | 03 Jan 2025 | ||
| Gerald M. Blumenstock | EVP, Research, Dev. & Eng. | $1,518,613 | -$271,422 | -15% | Mixed | 02 Mar 2026 |
| Robert John Mahoney | EVP Global Operations | $1,266,925 | Mixed | 02 Mar 2026 | ||
| Dipti Vachani | Director | $1,024,482 | Mixed | 15 May 2024 | ||
| Todd Sutton | VP Corporate Controller | $834,812 | Mixed | 12 Mar 2026 | ||
| Thomas St Dennis | Director | $807,142 | Mixed | 15 May 2025 | ||
| David Ryzhik | SVP Interim CFO | $573,788 | Mixed | 12 Mar 2026 | ||
| Jeanne Quirk | Director | $552,790 | Mixed | 15 May 2025 | ||
| Jorge Titinger | Director | $518,160 | -$252,100 | -33% | Filing P/S | 20 Feb 2026 |
| Tzu Yin Chiu | Director | $489,461 | Mixed | 15 May 2025 | ||
| Joseph P. Keithley | Director | $443,559 | Filing P/S | 14 Dec 2023 | ||
| Necip Sayiner | Director | $341,488 | Mixed | 15 May 2025 | ||
| Gregory B. Graves | Director | $341,488 | Mixed | 15 May 2025 |
Top shareholders of AXCELIS TECHNOLOGIES INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
15%
from 13D/G
|
4,827,575
|
$387,847,360 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
13%
|
4,122,529
|
$331,203,980 | — | 31 Dec 2025 | |
| REINHART PARTNERS, LLC. |
13D/G
13F
|
Company |
5.2%
|
1,589,898
|
$154,283,702 | $0 | 31 Dec 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
5.9%
|
1,807,404
|
$145,206,837 | — | 31 Dec 2025 | |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
— |
4.3%
|
1,345,761
|
$131,400,104 | -$30,629,863 | 30 Sep 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
4%
|
1,233,646
|
$99,111,119 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.9%
|
1,186,227
|
$95,301,477 | — | 31 Dec 2025 | |
| BNP Paribas Asset Management Holding S.A. |
13F
|
Company |
3.6%
|
1,091,094
|
$87,659,000 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
3%
|
917,747
|
$73,741,718 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.8%
|
841,040
|
$67,570,348 | — | 31 Dec 2025 | |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
|
Company |
2.2%
|
664,942
|
$53,421,440 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2.1%
|
629,814
|
$50,599,257 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
2%
|
610,603
|
$49,055,805 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
1.6%
|
478,897
|
$38,474,584 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.5%
|
470,285
|
$37,782,697 | — | 31 Dec 2025 | |
| Boston Partners |
13F
|
Company |
1.4%
|
422,435
|
$35,065,691 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.4%
|
431,195
|
$34,642,206 | — | 31 Dec 2025 | |
| LSV ASSET MANAGEMENT |
13F
|
Company |
1.4%
|
429,500
|
$34,506,000 | — | 31 Dec 2025 | |
| Boston Trust Walden Corp |
13F
|
Company |
1.4%
|
427,736
|
$34,364,310 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.3%
|
405,146
|
$32,549,430 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
1.3%
|
383,056
|
$30,776,000 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.2%
|
357,502
|
$28,721,711 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
350,220
|
$28,136,779 | — | 31 Dec 2025 | |
| Mary G. Puma |
3/4/5
|
EXECUTIVE CHAIRPERSON, Director |
—
class O/S missing
|
236,976
|
$26,787,767 | — | 09 May 2024 | |
| Grantham, Mayo, Van Otterloo & Co. LLC |
13F
|
Company |
1.1%
|
322,849
|
$25,937,689 | — | 31 Dec 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.87%
|
266,015
|
$22,909,212 | — | 31 Dec 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.9%
|
276,266
|
$22,195,210 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
0.8%
|
243,503
|
$19,563,031 | — | 31 Dec 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.72%
|
220,713
|
$17,732,082 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.7%
|
213,388
|
$17,143,592 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.69%
|
212,050
|
$17,036,097 | — | 31 Dec 2025 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.67%
|
205,737
|
$16,528,911 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.67%
|
203,536
|
$16,352,122 | — | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.65%
|
200,025
|
$16,070,009 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.58%
|
176,047
|
$14,143,616 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.54%
|
164,027
|
$13,177,929 | — | 31 Dec 2025 | |
| Russell Low |
3/4/5
|
PRESIDENT AND CEO, Director |
0.43%
|
132,282
|
$12,442,444 | -$228,971 | 01 Apr 2026 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.5%
|
153,703
|
$12,348,499 | — | 31 Dec 2025 | |
| First Eagle Investment Management, LLC |
13F
|
Company |
0.45%
|
136,318
|
$10,951,788 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.43%
|
130,090
|
$10,451,431 | — | 31 Dec 2025 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.42%
|
129,777
|
$10,426,284 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.39%
|
118,206
|
$9,496,670 | — | 31 Dec 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.38%
|
116,375
|
$9,349,567 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.36%
|
110,470
|
$8,875,160 | — | 31 Dec 2025 | |
| Clark Capital Management Group, Inc. |
13F
|
Company |
0.36%
|
110,294
|
$8,861,020 | — | 31 Dec 2025 | |
| Arthur L. George Jr. |
3/4/5
|
Director |
—
class O/S missing
|
58,936
|
$8,280,508 | — | 17 May 2021 | |
| SEGALL BRYANT & HAMILL, LLC |
13F
|
Company |
0.33%
|
102,187
|
$8,209,704 | — | 31 Dec 2025 | |
| BlackBarn Capital Partners LP |
13F
|
Company |
0.32%
|
96,573
|
$7,758,674 | — | 31 Dec 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.29%
|
88,396
|
$7,101,734 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
0.29%
|
88,147
|
$7,081,730 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for AXCELIS TECHNOLOGIES INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Russell Low | ACLS | Common Stock | Sale | -0.93% | $117,011 | $94.06 | -1,244 | 132,282 | 01 Apr 2026 | Direct |
| Russell Low | ACLS | Common Stock | Sale | -0.92% | $111,960 | $90.00 | -1,244 | 133,526 | 24 Mar 2026 | Direct |
| Robert John Mahoney | ACLS | Common Stock | Tax liability | -3.77% | -573 | 14,633 | 02 Mar 2026 | Direct | ||
| Gerald M. Blumenstock | ACLS | Common Stock | Tax liability | -6.01% | -1,121 | 17,540 | 02 Mar 2026 | Direct | ||
| Christopher Tatnall | ACLS | Common Stock | Tax liability | -4.61% | -1,121 | 23,183 | 02 Mar 2026 | Direct | ||
| Greg Redinbo | ACLS | Common Stock | Tax liability | -2.21% | -723 | 31,938 | 02 Mar 2026 | Direct | ||
| James Gordon Coogan | ACLS | Common Stock | Tax liability | -4.62% | -1,800 | 37,144 | 02 Mar 2026 | Direct | ||
| Russell Low | ACLS | Common Stock | Tax liability | -3.84% | -5,227 | 130,928 | 02 Mar 2026 | Direct | ||
| Jorge Titinger | ACLS | Common Stock | Sale | -13.4% | $80,000 | $80.00 | -1,000 | 6,477 | 20 Feb 2026 | Direct |
| Robert John Mahoney | ACLS | Common Stock | Award | 12.9% | 1,734 | 15,206 | 15 Jan 2026 | Direct | ||
| Jorge Titinger | ACLS | Common Stock | Sale | -21.1% | $172,100 | $86.05 | -2,000 | 7,477 | 17 Dec 2025 | Direct |
| Eileen J. Evans | ACLS | Common Stock | Tax liability | -5.34% | -1,378 | 24,406 | 16 Dec 2025 | Direct | ||
| Gerald M. Blumenstock | ACLS | Common Stock | Sale | -14% | $271,422 | $89.46 | -3,034 | 18,661 | 11 Dec 2025 | Direct |
| James Gordon Coogan | ACLS | Common Stock | Tax liability | -1.8% | -713 | 38,944 | 16 Oct 2025 | Direct | ||
| Christopher Tatnall | ACLS | Common Stock | Tax liability | -0.56% | -137 | 24,304 | 15 Sep 2025 | Direct | ||
| Greg Redinbo | ACLS | Common Stock | Tax liability | -0.63% | -208 | 32,661 | 15 Sep 2025 | Direct | ||
| Gerald M. Blumenstock | ACLS | Common Stock | Tax liability | -2.28% | -506 | 21,695 | 16 Jun 2025 | Direct | ||
| Greg Redinbo | ACLS | Common Stock | Tax liability | -2.18% | -734 | 32,869 | 16 Jun 2025 | Direct | ||
| Kurtzweil John T. | ACLS | Common Stock | Sale | -4.58% | $104,166 | $61.93 | -1,682 | 35,050 | 20 May 2025 | Direct |
| Russell Low | ACLS | Common Stock | Tax liability | -0.69% | -947 | 136,155 | 17 May 2025 | Direct | ||
| Greg Redinbo | ACLS | Common Stock | Tax liability | -0.56% | -190 | 33,603 | 16 May 2025 | Direct | ||
| Russell Low | ACLS | Common Stock | Tax liability | -0.52% | -712 | 137,142 | 16 May 2025 | Direct | ||
| Christopher Tatnall | ACLS | Common Stock | Tax liability | -2.06% | -515 | 24,441 | 15 May 2025 | Direct | ||
| Christopher Tatnall | ACLS | Common Stock | Award | 97.1% | 12,296 | 24,956 | 15 May 2025 | Direct | ||
| Greg Redinbo | ACLS | Common Stock | Tax liability | -1.13% | -386 | 33,793 | 15 May 2025 | Direct | ||
| Greg Redinbo | ACLS | Common Stock | Award | 56.2% | 12,296 | 34,179 | 15 May 2025 | Direct | ||
| James Gordon Coogan | ACLS | Common Stock | Tax liability | -1.43% | -574 | 39,657 | 15 May 2025 | Direct | ||
| James Gordon Coogan | ACLS | Common Stock | Award | 157.2% | 24,590 | 40,231 | 15 May 2025 | Direct | ||
| Russell Low | ACLS | Common Stock | Tax liability | -2.25% | -3,175 | 137,854 | 15 May 2025 | Direct | ||
| Russell Low | ACLS | Common Stock | Award | 77.3% | 61,476 | 141,029 | 15 May 2025 | Direct | ||
| Gerald M. Blumenstock | ACLS | Common Stock | Tax liability | -1.53% | -345 | 22,201 | 15 May 2025 | Direct | ||
| Gerald M. Blumenstock | ACLS | Common Stock | Award | 120% | 12,296 | 22,546 | 15 May 2025 | Direct | ||
| Eileen J. Evans | ACLS | Common Stock | Award | 125.4% | 14,344 | 25,784 | 15 May 2025 | Direct | ||
| Tzu Yin Chiu | ACLS | Common Stock | Award | 52.6% | 3,586 | 10,403 | 15 May 2025 | Direct | ||
| Necip Sayiner | ACLS | Common Stock | Award | 97.7% | 3,586 | 7,258 | 15 May 2025 | Direct | ||
| Gregory B. Graves | ACLS | Common Stock | Award | 97.7% | 3,586 | 7,258 | 15 May 2025 | Direct | ||
| Jeanne Quirk | ACLS | Common Stock | Award | 43.9% | 3,586 | 11,749 | 15 May 2025 | Direct | ||
| Thomas St Dennis | ACLS | Common Stock | Award | 26.4% | 3,586 | 17,155 | 15 May 2025 | Direct | ||
| Jorge Titinger | ACLS | Common Stock | Award | 60.9% | 3,586 | 9,477 | 15 May 2025 | Direct | ||
| Kurtzweil John T. | ACLS | Common Stock | Award | 10.8% | 3,586 | 36,732 | 15 May 2025 | Direct | ||
| Christopher Tatnall | ACLS | Common Stock | Tax liability | -6.69% | -907 | 12,660 | 21 Apr 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.