AXCELIS TECHNOLOGIES INC (ACLS)

Data as of Sep 16, 2026, from SEC Form 4 filings.

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Latest ACLS insider trades

Necip Sayiner
Open-market sale$250K
Jun 3, 2026
Robert John Mahoney - Officer
Open-market sale$179K
Jun 2, 2026

About AXCELIS TECHNOLOGIES INC (ACLS)

AXCELIS TECHNOLOGIES INC is an SEC registrant, filing under CIK 0001113232, classified as special industry machinery, nec. It is grouped with Industrials companies on this site.

Sector: Industrials

SEC filings for ACLS on EDGAR

ACLS Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Tax withholding / forfeiture	4	565

Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.

ACLS insider transactions (Form 4)

76 Form 4 filings on record, the earliest from Oct 17, 2024, newest first. Filing history page 1 of 3.

Date	Insider	Transaction	Security	Shares	Price	Value
Sep 15, 2026	Greg Redinbo - Officer	Tax withholding / forfeiture	Common Stock	208	$105.04^{footnote F2}	$22K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
Sep 15, 2026	Christopher Tatnall - Officer	Tax withholding / forfeiture	Common Stock	136	$105.04^{footnote F2}	$14K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
Jul 15, 2026	David Ryzhik - Officer	Tax withholding / forfeiture	Common Stock	127	$145.01^{footnote F2}	$18K
Jul 15, 2026	David Ryzhik - Officer	Tax withholding / forfeiture	Common Stock	94	$145.01^{footnote F2}	$14K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
Jun 16, 2026	David Ryzhik - Officer	Tax withholding / forfeiture	Common Stock	76	$176.85^{footnote F2}	$13K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
Jun 15, 2026	Gerald M. Blumenstock - Officer	Tax withholding / forfeiture	Common Stock	506	$191.60^{footnote F2}	$97K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
Jun 3, 2026	Necip Sayiner	Open-market sale	Common Stock	1,586	$157.44^{footnote F1}	$250K
Footnote F1 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $157.4100 to $157.7100, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR
Jun 2, 2026	Robert John Mahoney - Officer	Open-market sale	Common Stock	1,155	$155.24	$179K
May 27, 2026	Todd Sutton - Officer	Open-market sale	Common Stock	2,000	$159.99	$320K
May 22, 2026	Dennis Thomas St	Open-market sale	Common Stock	900	$155.37	$140K
May 22, 2026	Eileen Evans - Officer	Open-market sale	Common Stock	926	$155.51	$144K
May 21, 2026	Gerald M. Blumenstock - Officer	Open-market sale	Common Stock	1,161	$152.70	$177K
May 20, 2026	Christopher Tatnall - Officer	Open-market sale	Common Stock	1,166	$149.75	$175K
May 19, 2026	Gregory B. Graves	Open-market sale	Common Stock	2,625	$141.41^{footnote F1}	$371K
May 19, 2026	Gregory B. Graves	Open-market sale	Common Stock	600	$142.51^{footnote F3}	$86K
Footnote F1 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $141.3301 to $141.6000, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR Footnote F3 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $142.4400 to $142.6400, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR
May 19, 2026	John T. Kurtzweil	Open-market sale	Common Stock	3,500	$138.79^{footnote F1}	$486K
Footnote F1 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $138.7600 to $139.1300, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR
May 19, 2026	Jeanne Quirk	Open-market sale	Common Stock	1,789	$140.22	$251K
May 18, 2026	Todd Sutton - Officer	Tax withholding / forfeiture	Common Stock	184	$146.24^{footnote F2}	$27K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 18, 2026	Robert John Mahoney - Officer	Tax withholding / forfeiture	Common Stock	182	$146.24^{footnote F2}	$27K
May 18, 2026	Robert John Mahoney - Officer	Tax withholding / forfeiture	Common Stock	130	$146.24^{footnote F2}	$19K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 18, 2026	Greg Redinbo - Officer	Tax withholding / forfeiture	Common Stock	111	$146.24^{footnote F2}	$16K
May 18, 2026	Greg Redinbo - Officer	Tax withholding / forfeiture	Common Stock	79	$146.24^{footnote F2}	$12K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 18, 2026	Russell Low - Officer	Tax withholding / forfeiture	Common Stock	711	$146.24^{footnote F2}	$104K
Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Todd Sutton - Officer	Grant or award	Common Stock	1,168	$0.00^{footnote F1}	-
May 15, 2026	Todd Sutton - Officer	Tax withholding / forfeiture	Common Stock	226	$155.18^{footnote F4}	$35K
May 15, 2026	Todd Sutton - Officer	Tax withholding / forfeiture	Common Stock	112	$155.18^{footnote F4}	$17K
May 15, 2026	Todd Sutton - Officer	Tax withholding / forfeiture	Common Stock	103	$155.18^{footnote F4}	$16K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F4 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	David Ryzhik - Officer	Grant or award	Common Stock	3,115	$0.00^{footnote F1}	-
May 15, 2026	David Ryzhik - Officer	Tax withholding / forfeiture	Common Stock	226	$155.18^{footnote F4}	$35K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F4 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Robert John Mahoney - Officer	Grant or award	Common Stock	1,947	$0.00^{footnote F1}	-
May 15, 2026	Robert John Mahoney - Officer	Grant or award	Common Stock	1,947	$0.00^{footnote F3}	-
May 15, 2026	Robert John Mahoney - Officer	Tax withholding / forfeiture	Common Stock	372	$155.18^{footnote F6}	$58K
May 15, 2026	Robert John Mahoney - Officer	Tax withholding / forfeiture	Common Stock	173	$155.18^{footnote F6}	$27K
May 15, 2026	Robert John Mahoney - Officer	Tax withholding / forfeiture	Common Stock	170	$155.18^{footnote F6}	$26K
May 15, 2026	Robert John Mahoney - Officer	Tax withholding / forfeiture	Common Stock	61	$155.18^{footnote F6}	$9K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Gerald M. Blumenstock - Officer	Grant or award	Common Stock	2,725	$0.00^{footnote F1}	-
May 15, 2026	Gerald M. Blumenstock - Officer	Grant or award	Common Stock	2,725	$0.00^{footnote F3}	-
May 15, 2026	Gerald M. Blumenstock - Officer	Tax withholding / forfeiture	Common Stock	744	$155.18^{footnote F6}	$115K
May 15, 2026	Gerald M. Blumenstock - Officer	Tax withholding / forfeiture	Common Stock	345	$155.18^{footnote F6}	$54K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Christopher Tatnall - Officer	Grant or award	Common Stock	3,504	$0.00^{footnote F1}	-
May 15, 2026	Christopher Tatnall - Officer	Grant or award	Common Stock	3,504	$0.00^{footnote F3}	-
May 15, 2026	Christopher Tatnall - Officer	Tax withholding / forfeiture	Common Stock	744	$155.18^{footnote F6}	$115K
May 15, 2026	Christopher Tatnall - Officer	Tax withholding / forfeiture	Common Stock	345	$155.18^{footnote F6}	$54K
May 15, 2026	Christopher Tatnall - Officer	Tax withholding / forfeiture	Common Stock	170	$155.18^{footnote F6}	$26K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Greg Redinbo - Officer	Grant or award	Common Stock	3,115	$0.00^{footnote F1}	-
May 15, 2026	Greg Redinbo - Officer	Grant or award	Common Stock	3,115	$0.00^{footnote F3}	-
May 15, 2026	Greg Redinbo - Officer	Tax withholding / forfeiture	Common Stock	452	$155.18^{footnote F6}	$70K
May 15, 2026	Greg Redinbo - Officer	Tax withholding / forfeiture	Common Stock	210	$155.18^{footnote F6}	$33K
May 15, 2026	Greg Redinbo - Officer	Tax withholding / forfeiture	Common Stock	177	$155.18^{footnote F6}	$27K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Eileen Evans - Officer	Grant or award	Common Stock	3,893	$0.00^{footnote F1}	-
May 15, 2026	Eileen Evans - Officer	Grant or award	Common Stock	3,893	$0.00^{footnote F3}	-
May 15, 2026	Eileen Evans - Officer	Tax withholding / forfeiture	Common Stock	867	$155.18^{footnote F6}	$135K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Russell Low - Officer	Grant or award	Common Stock	19,466	$0.00^{footnote F1}	-
May 15, 2026	Russell Low - Officer	Grant or award	Common Stock	19,466	$0.00^{footnote F3}	-
May 15, 2026	Russell Low - Officer	Tax withholding / forfeiture	Common Stock	3,716	$155.18^{footnote F6}	$577K
May 15, 2026	Russell Low - Officer	Tax withholding / forfeiture	Common Stock	1,722	$155.18^{footnote F6}	$267K
May 15, 2026	Russell Low - Officer	Tax withholding / forfeiture	Common Stock	1,453	$155.18^{footnote F6}	$225K
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.
May 15, 2026	Jorge Titinger	Grant or award	Common Stock	1,440	$0.00^{footnote F1}	-
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.
May 15, 2026	Dennis Thomas St	Grant or award	Common Stock	1,440	$0.00^{footnote F1}	-
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.
May 15, 2026	Necip Sayiner	Grant or award	Common Stock	1,440	$0.00^{footnote F1}	-
Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.

Recent ACLS Form 8-K filings

Read ACLS company news

Aug 6, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

May 7, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

May 6, 2026Item 5.07

Read the filing on SEC EDGAR

Mar 12, 2026Item 5.02, 7.01, 9.01

Recent ACLS Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Jun 3, 2026	-	-	-	-	View on EDGAR
Jun 2, 2026	-	-	-	-

ACLS insider trading FAQ

What is the latest insider trade for ACLS?

AXCELIS TECHNOLOGIES INC (ACLS) had 3 insider filings in the last 90 days, with the most recent on 2026-09-16. The full record for ACLS runs to 76 Form 4 filings, the earliest from 2024-10-17. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying ACLS stock?

No insider purchases of ACLS were filed in the last 90 days.

How many insiders are selling ACLS stock?

No insider sales of ACLS were filed in the last 90 days. 22 sales are on record for this company.

Where can I see ACLS SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects ACLS Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Industrials companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Sep 16, 2026 - Greg Redinbo view on EDGAR
Sep 16, 2026 - Christopher Tatnall view on EDGAR
Jul 17, 2026 - David Ryzhik view on EDGAR
Jun 17, 2026 - David Ryzhik view on EDGAR
Jun 16, 2026 - Gerald M. Blumenstock view on EDGAR
Jun 4, 2026 - Necip Sayiner view on EDGAR
Jun 3, 2026 - Robert John Mahoney view on EDGAR
May 28, 2026 - Todd Sutton view on EDGAR
May 26, 2026 - Dennis Thomas St view on EDGAR

Related companies with recent insider activity

Learn more

What the Form 4 transaction codes mean: Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Industrials: Where ACLS's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Tax withholding / forfeiture

565

Date

Insider

Transaction

Security

Price

Value

Sep 15, 2026

Greg Redinbo - Officer

Tax withholding / forfeiture

Common Stock

208

$105.04^{footnote F2}

$22K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

Sep 15, 2026

Christopher Tatnall - Officer

Tax withholding / forfeiture

Common Stock

136

$105.04^{footnote F2}

$14K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

Jul 15, 2026

David Ryzhik - Officer

Tax withholding / forfeiture

Common Stock

127

$145.01^{footnote F2}

$18K

Jul 15, 2026

David Ryzhik - Officer

Tax withholding / forfeiture

Common Stock

$145.01^{footnote F2}

$14K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

Jun 16, 2026

David Ryzhik - Officer

Tax withholding / forfeiture

Common Stock

$176.85^{footnote F2}

$13K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

Jun 15, 2026

Gerald M. Blumenstock - Officer

Tax withholding / forfeiture

Common Stock

506

$191.60^{footnote F2}

$97K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

Jun 3, 2026

Necip Sayiner

Open-market sale

Common Stock

1,586

$157.44^{footnote F1}

$250K

Footnote F1 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $157.4100 to $157.7100, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR

Jun 2, 2026

Robert John Mahoney - Officer

Open-market sale

Common Stock

1,155

$155.24

$179K

May 27, 2026

Todd Sutton - Officer

Open-market sale

Common Stock

2,000

$159.99

$320K

May 22, 2026

Dennis Thomas St

Open-market sale

Common Stock

900

$155.37

$140K

May 22, 2026

Eileen Evans - Officer

Open-market sale

Common Stock

926

$155.51

$144K

May 21, 2026

Gerald M. Blumenstock - Officer

Open-market sale

Common Stock

1,161

$152.70

$177K

May 20, 2026

Christopher Tatnall - Officer

Open-market sale

Common Stock

1,166

$149.75

$175K

May 19, 2026

Gregory B. Graves

Open-market sale

Common Stock

2,625

$141.41^{footnote F1}

$371K

May 19, 2026

Gregory B. Graves

Open-market sale

Common Stock

600

$142.51^{footnote F3}

$86K

Footnote F1 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $141.3301 to $141.6000, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $142.4400 to $142.6400, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR

May 19, 2026

John T. Kurtzweil

Open-market sale

Common Stock

3,500

$138.79^{footnote F1}

$486K

Footnote F1 (price): The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $138.7600 to $139.1300, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request… Full note on SEC EDGAR

May 19, 2026

Jeanne Quirk

Open-market sale

Common Stock

1,789

$140.22

$251K

May 18, 2026

Todd Sutton - Officer

Tax withholding / forfeiture

Common Stock

184

$146.24^{footnote F2}

$27K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 18, 2026

Robert John Mahoney - Officer

Tax withholding / forfeiture

Common Stock

182

$146.24^{footnote F2}

$27K

May 18, 2026

Robert John Mahoney - Officer

Tax withholding / forfeiture

Common Stock

130

$146.24^{footnote F2}

$19K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 18, 2026

Greg Redinbo - Officer

Tax withholding / forfeiture

Common Stock

111

$146.24^{footnote F2}

$16K

May 18, 2026

Greg Redinbo - Officer

Tax withholding / forfeiture

Common Stock

$146.24^{footnote F2}

$12K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 18, 2026

Russell Low - Officer

Tax withholding / forfeiture

Common Stock

711

$146.24^{footnote F2}

$104K

Footnote F2 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Todd Sutton - Officer

Grant or award

Common Stock

1,168

$0.00^{footnote F1}

May 15, 2026

Todd Sutton - Officer

Tax withholding / forfeiture

Common Stock

226

$155.18^{footnote F4}

$35K

May 15, 2026

Todd Sutton - Officer

Tax withholding / forfeiture

Common Stock

112

$155.18^{footnote F4}

$17K

May 15, 2026

Todd Sutton - Officer

Tax withholding / forfeiture

Common Stock

103

$155.18^{footnote F4}

$16K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F4 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

David Ryzhik - Officer

Grant or award

Common Stock

3,115

$0.00^{footnote F1}

May 15, 2026

David Ryzhik - Officer

Tax withholding / forfeiture

Common Stock

226

$155.18^{footnote F4}

$35K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F4 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Robert John Mahoney - Officer

Grant or award

Common Stock

1,947

$0.00^{footnote F1}

May 15, 2026

Robert John Mahoney - Officer

Grant or award

Common Stock

1,947

$0.00^{footnote F3}

May 15, 2026

Robert John Mahoney - Officer

Tax withholding / forfeiture

Common Stock

372

$155.18^{footnote F6}

$58K

May 15, 2026

Robert John Mahoney - Officer

Tax withholding / forfeiture

Common Stock

173

$155.18^{footnote F6}

$27K

May 15, 2026

Robert John Mahoney - Officer

Tax withholding / forfeiture

Common Stock

170

$155.18^{footnote F6}

$26K

May 15, 2026

Robert John Mahoney - Officer

Tax withholding / forfeiture

Common Stock

$155.18^{footnote F6}

$9K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR
Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Gerald M. Blumenstock - Officer

Grant or award

Common Stock

2,725

$0.00^{footnote F1}

May 15, 2026

Gerald M. Blumenstock - Officer

Grant or award

Common Stock

2,725

$0.00^{footnote F3}

May 15, 2026

Gerald M. Blumenstock - Officer

Tax withholding / forfeiture

Common Stock

744

$155.18^{footnote F6}

$115K

May 15, 2026

Gerald M. Blumenstock - Officer

Tax withholding / forfeiture

Common Stock

345

$155.18^{footnote F6}

$54K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR
Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Christopher Tatnall - Officer

Grant or award

Common Stock

3,504

$0.00^{footnote F1}

May 15, 2026

Christopher Tatnall - Officer

Grant or award

Common Stock

3,504

$0.00^{footnote F3}

May 15, 2026

Christopher Tatnall - Officer

Tax withholding / forfeiture

Common Stock

744

$155.18^{footnote F6}

$115K

May 15, 2026

Christopher Tatnall - Officer

Tax withholding / forfeiture

Common Stock

345

$155.18^{footnote F6}

$54K

May 15, 2026

Christopher Tatnall - Officer

Tax withholding / forfeiture

Common Stock

170

$155.18^{footnote F6}

$26K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR
Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Greg Redinbo - Officer

Grant or award

Common Stock

3,115

$0.00^{footnote F1}

May 15, 2026

Greg Redinbo - Officer

Grant or award

Common Stock

3,115

$0.00^{footnote F3}

May 15, 2026

Greg Redinbo - Officer

Tax withholding / forfeiture

Common Stock

452

$155.18^{footnote F6}

$70K

May 15, 2026

Greg Redinbo - Officer

Tax withholding / forfeiture

Common Stock

210

$155.18^{footnote F6}

$33K

May 15, 2026

Greg Redinbo - Officer

Tax withholding / forfeiture

Common Stock

177

$155.18^{footnote F6}

$27K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR
Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Eileen Evans - Officer

Grant or award

Common Stock

3,893

$0.00^{footnote F1}

May 15, 2026

Eileen Evans - Officer

Grant or award

Common Stock

3,893

$0.00^{footnote F3}

May 15, 2026

Eileen Evans - Officer

Tax withholding / forfeiture

Common Stock

867

$155.18^{footnote F6}

$135K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR
Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Russell Low - Officer

Grant or award

Common Stock

19,466

$0.00^{footnote F1}

May 15, 2026

Russell Low - Officer

Grant or award

Common Stock

19,466

$0.00^{footnote F3}

May 15, 2026

Russell Low - Officer

Tax withholding / forfeiture

Common Stock

3,716

$155.18^{footnote F6}

$577K

May 15, 2026

Russell Low - Officer

Tax withholding / forfeiture

Common Stock

1,722

$155.18^{footnote F6}

$267K

May 15, 2026

Russell Low - Officer

Tax withholding / forfeiture

Common Stock

1,453

$155.18^{footnote F6}

$225K

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to one-third of the shares granted on each of May 15, 2027, May… Full note on SEC EDGAR
Footnote F3 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. In this grant, the executive may earn shares of common stock, ranging from zero to 200% of the granted units. The shares are earned based on the… Full note on SEC EDGAR
Footnote F6 (price): Represents the closing price of the common stock on the date of the tax withholding.

May 15, 2026

Jorge Titinger

Grant or award

Common Stock

1,440

$0.00^{footnote F1}

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.

May 15, 2026

Dennis Thomas St

Grant or award

Common Stock

1,440

$0.00^{footnote F1}

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.

May 15, 2026

Necip Sayiner

Grant or award

Common Stock

1,440

$0.00^{footnote F1}

Footnote F1 (price): These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.

Filed

Filer

Relationship

Market value

Notice

Jun 3, 2026

View on EDGAR

Jun 2, 2026