Joseph S. Koscinski

Insider Reports History

Reporting-owner location: Malvern, PA
Latest reporting-owner signature: /s/ Joseph S. Koscinski
Source: Latest parsed Forms 3/4/5 signature
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Joseph S. Koscinski

Form 4 holding Vice President, Chief Administrative Officer, General Counsel and Secretary

Ecovyst Inc.

Security class: Common Stock
Shares / value: 595,784
Estimated value: $6,946,841
Report date: 04 Mar 2026
Price: $11.66
Ownership: Direct

Insider Reports Filed by Joseph S. Koscinski

4 ECVT

Ecovyst Inc.

Report period: 04 Mar 2026
Transactions: 1
Transaction value: $0
Accepted by SEC: 06 Mar 2026, 16:00
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 03 Feb 2026
Transactions: 1
Transaction value: $0
Accepted by SEC: 05 Feb 2026, 16:04
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 03 Feb 2025
Transactions: 1
Transaction value: $0
Accepted by SEC: 05 Feb 2025, 16:09
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 22 Jan 2025
Transactions: 1
Transaction value: -$43,955
Accepted by SEC: 23 Jan 2025, 16:08
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 05 Jan 2025
Transactions: 1
Transaction value: -$135,379
Accepted by SEC: 07 Jan 2025, 17:15
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 05 Aug 2024
Transactions: 1
Transaction value: +$30,090
Accepted by SEC: 06 Aug 2024, 16:01
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 22 Jan 2024
Transactions: 1
Transaction value: $0
Accepted by SEC: 24 Jan 2024, 16:42
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 01 Jul 2023
Transactions: 1
Transaction value: -$600,677
Accepted by SEC: 05 Jul 2023, 16:30
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 08 Mar 2023
Transactions: 1
Transaction value: $0
Accepted by SEC: 09 Mar 2023, 17:07
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 16 Jan 2023
Transactions: 1
Transaction value: $0
Accepted by SEC: 18 Jan 2023, 15:32
Role: Vice President, Chief Administrative Officer, General Counsel and Secretary
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 16 Nov 2022
Transactions: 4
Transaction value: +$37,339
Accepted by SEC: 18 Nov 2022, 15:22
Role: Vice President, Secretary, and General Counsel
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 04 Aug 2022
Transactions: 1
Transaction value: +$100,253
Accepted by SEC: 08 Aug 2022, 16:31
Role: Vice President, Secretary, and General Counsel
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 12 May 2022
Transactions: 1
Transaction value: +$50,023
Accepted by SEC: 16 May 2022, 16:30
Role: Vice President, Secretary, and General Counsel
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 01 Mar 2022
Transactions: 1
Transaction value: $0
Accepted by SEC: 03 Mar 2022, 15:31
Role: Vice President, Secretary, and General Counsel
Next action: Open filing details

4 ECVT

Ecovyst Inc.

Report period: 17 Jan 2022
Transactions: 2
Transaction value: $0
Accepted by SEC: 19 Jan 2022, 15:21
Role: Vice President, Secretary and General Counsel
Next action: Open filing details

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