Christopher Tatnall

CIK: 0001990732

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (5.9%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (23.5%)

Compensation grants

Other (G, F, J, C, D, …)12 (70.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ACLS

AXCELIS TECHNOLOGIES INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (17 total)

ACLS
AXCELIS TECHNOLOGIES INC
Sep 15, 2026
Tax Payment(F)
Direct
136 shares at avg. $105.04$14K
ACLS
AXCELIS TECHNOLOGIES INC
May 20, 2026
Sale(S)
Direct
1.2K shares at avg. $149.75$175K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Award(A)
Direct
3.5K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Tax Payment(F)
Direct
744 shares at avg. $155.18$115K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Tax Payment(F)
Direct
345 shares at avg. $155.18$54K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Tax Payment(F)
Direct
170 shares at avg. $155.18$26K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Award(A)
Direct
3.5K shares-
ACLS
AXCELIS TECHNOLOGIES INC
Apr 20, 2026
Tax Payment(F)
Direct
907 shares at avg. $131.02$119K
ACLS
AXCELIS TECHNOLOGIES INC
Mar 2, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $86.58$97K
ACLS
AXCELIS TECHNOLOGIES INC
Sep 15, 2025
Tax Payment(F)
Direct
137 shares at avg. $87.30$12K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Tax Payment(F)
Direct
170 shares at avg. $62.67$11K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Award(A)
Direct
6.1K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Award(A)
Direct
6.1K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Tax Payment(F)
Direct
345 shares at avg. $62.67$22K
ACLS
AXCELIS TECHNOLOGIES INC
Apr 21, 2025
Tax Payment(F)
Direct
907 shares at avg. $45.23$41K
ACLS
AXCELIS TECHNOLOGIES INC
Feb 28, 2025
Tax Payment(F)
Direct
1.1K shares at avg. $54.79$63K
ACLS
AXCELIS TECHNOLOGIES INC
Sep 16, 2024
Tax Payment(F)
Direct
83 shares at avg. $98.86$8K

		Type	Shares	Price		Ownership
Sep 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	136	$105.04	$14,285	Direct
May 20, 2026	ACLS AXCELIS TECHNOLOGIES INC	Sale(S)	1,166	$149.75	$174,609	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	3,504	-	$0	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	744	$155.18	$115,454	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	345	$155.18	$53,537	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	170	$155.18	$26,381	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	3,504	-	$0	Direct
Apr 20, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	907	$131.02	$118,835	Direct
Mar 2, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	1,121	$86.58	$97,056	Direct
Sep 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	137	$87.30	$11,960	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	170	$62.67	$10,654	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	6,148	-	-	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	6,148	-	-	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	345	$62.67	$21,621	Direct
Apr 21, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	907	$45.23	$41,024	Direct
Feb 28, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	1,146	$54.79	$62,789	Direct
Sep 16, 2024	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	83	$98.86	$8,205	Direct

1-17 of 17 transactions

About Tatnall Christopher

Tatnall Christopher (SEC CIK 0001990732) files insider reports with the SEC as EVP Global Customer Operations of AXCELIS TECHNOLOGIES INC (ACLS).

Signal8 holds 10 ownership filings by Tatnall Christopher, all Form 4s, filed between Sep 17, 2024 and Sep 16, 2026. Those filings report 17 transactions, from Sep 16, 2024 to Sep 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Tatnall Christopher's filings is in BEVERLY, MA.

Recent filings by Tatnall Christopher

Sep 15, 2026: Tax withholding of ACLS shares (Form 4, code F).
May 20, 2026: Open-market sale of ACLS shares (Form 4, code S).
May 15, 2026: Grant or award of ACLS shares (Form 4, code A).
May 15, 2026: Tax withholdings of ACLS shares (3 lines, Form 4, code F).
May 15, 2026: Grant or award of ACLS shares (Form 4, code A).

Other insiders filing for AXCELIS TECHNOLOGIES INC (ACLS)

Redinbo Greg, EVP and Chief Strategy Officer
Ryzhik David, SVP Interim CFO
Blumenstock Gerald M, EVP, Research, Dev. & Eng.
Sayiner Necip, Director
Mahoney Robert John, EVP Global Operations
Sutton Todd, VP Corporate Controller

How to read Form 4 transaction codes