Mark Durham - 01 Apr 2026 Form 4 Insider Report for CHART INDUSTRIES INC (GTLS)

Reporting relationship: Chief Accounting Officer
Issuer ticker: GTLS
Reported as of: 01 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Apr 2026, 17:25:55 UTC
Prior SEC filing: 06 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark Durham, by Gregory J. Dziak, his attorney-in-fact

Key filing fact

Mark Durham filed Form 4 for CHART INDUSTRIES INC (GTLS) on 02 Apr 2026.

Key facts

This page summarizes Mark Durham's Form 4 filing for CHART INDUSTRIES INC (GTLS).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 02 Apr 2026, 17:25.

Change

Previous filing in this sequence was filed on 06 Jan 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002073180 Primary reporting owner

Durham Mark

Relationship: Chief Accounting Officer
Address: 8665 NEW TRAILS DRIVE, SUITE 100, THE WOODLANDS
Signature: /s/ Mark Durham, by Gregory J. Dziak, his attorney-in-fact
Signature date: 02 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GTLS transaction

Common stock, par value $0.01 per share

Award

Transaction value
Shares: +689
Change %: +24%
Price: $0.000000^*
Shares after: 3,526
Date: 01 Apr 2026
Ownership: Direct
Footnotes: F1

GTLS transaction

Common stock, par value $0.01 per share

Tax liability

Transaction value
Shares: -345
Change %: -9.8%
Price: $206.94^*
Shares after: 3,181
Date: 01 Apr 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents performance units granted on April 3, 2023, under the Chart Industries, Inc. 2017 Omnibus Equity Plan, that have vested and are paid out in shares of common stock.

Footnote F2

The reporting person surrendered 345 shares to satisfy tax withholding liabilities in an exempt transaction under Rule 16b-3.