secwatch / observer
MKSI MKS INC
CIK 0001049502 50 ready 8-Ks latest May 12, 2026, 4:15 PM ET RSS · JSON
Activity: QUIET 0 filings / 30d vs 1 baseline
Ready 8-Ks 50
Latest filing May 12, 2026, 4:15 PM ET
Top materiality 0.95
Event mix earnings ×17 · debt ×11 · other_material ×9
Sentiment 20 pos · 4 neg · 26 neu
Latest earnings ▼ miss 2026-Q1
Executive change recent →

Recent 8-K filings for MKSI

Executive changes

Role change

David P. Henry

Executive Vice President, Global Strategic Marketing and General Manager, Materials Solutions Division
MKSI · MKS INC
Effective
2025-08-01
Filed
May 15, 2025, 7:59 PM ET
appointed David P. Henry, who currently serves as Executive Vice President, Operations and Corporate Marketing, to serve as Executive Vice President, Global Strategic Marketing and General Manager, Materials Solutions Division, effective as of August 1, 2025.
Role change

James A. Schreiner

Executive Vice President and Chief Operating Officer
MKSI · MKS INC
Effective
2025-08-01
Filed
May 15, 2025, 7:59 PM ET
appointed James A. Schreiner, age 63, who currently serves as Executive Vice President and Chief Operating Officer, Materials Solutions Division, to serve as Executive Vice President and Chief Operating Officer, effective as of August 1, 2025.
Appointed

Wissam Jabre

Director
MKSI · MKS INC
Effective
2024-11-04
Filed
November 5, 2024, 6:59 PM ET
On November 4, 2024, the Board of Directors (the “Board”) of MKS Instruments, Inc. (the “Company”) appointed Wissam Jabre as a Class III Director, effective November 4, 2024, to serve until the 2026 Annual Meeting of Shareholders.
Appointed

Ramakumar Mayampurath

Executive Vice President, Chief Financial Officer and Treasurer
MKSI · MKS INC
Effective
2024-10-14
Filed
August 13, 2024, 7:59 PM ET
On August 5, 2024, the Board of Directors of MKS Instruments, Inc. (the “Company”) appointed Ramakumar Mayampurath to serve as Executive Vice President, Chief Financial Officer and Treasurer of the Company, effective October 14, 2024.
Appointed (interim)

John T.C. Lee

principal financial officer
MKSI · MKS INC
Effective
2024-04-01
Filed
April 1, 2024, 7:59 PM ET
Following Mr. Bagshaw’s retirement, on April 1, 2024, John T.C. Lee, President and Chief Executive Officer of the Company, assumed the role of principal financial officer of the Company on an interim basis while the Company continues its search for Mr. Bagshaw’s successor.
Departed

Seth H. Bagshaw

Executive Vice President, Chief Financial Officer and Treasurer
MKSI · MKS INC
Effective
2024-04-01
Filed
April 1, 2024, 7:59 PM ET
As previously announced, on April 1, 2024, Seth H. Bagshaw retired as Executive Vice President, Chief Financial Officer and Treasurer of MKS Instruments, Inc. (the “Company”).
Appointed

Michelle M. McCarthy

Vice President and Chief Accounting Officer
MKSI · MKS INC
Effective
2024-03-04
Filed
February 8, 2024, 6:59 PM ET
On February 5, 2024, the Board of Directors (the “Board”) of MKS Instruments, Inc. (the “Company”) appointed Michelle M. McCarthy to serve as Vice President and Chief Accounting Officer of the Company, effective March 4, 2024.
Departed

Seth H. Bagshaw

Executive Vice President, Chief Financial Officer and Treasurer
MKSI · MKS INC
Effective
2024-04-01
Filed
February 8, 2024, 6:59 PM ET
Mr. Bagshaw will continue to serve as the principal financial officer of the Company until his previously announced retirement as Executive Vice President, Chief Financial Officer and Treasurer of the Company, effective April 1, 2024.
Departed

Seth H. Bagshaw

Executive Vice President, Chief Financial Officer and Treasurer
MKSI · MKS INC
Effective
2024-04-01
Filed
December 4, 2023, 6:59 PM ET
On December 1, 2023, Seth H. Bagshaw, Executive Vice President, Chief Financial Officer and Treasurer of MKS Instruments, Inc. (the “Company”) notified the Company that he intends to retire as Executive Vice President, Chief Financial Officer and Treasurer of the Company effective April 1, 2024.
Departed

Geoff Wild

Other Named Officer
MKSI · MKS INC
Effective
2022-08-17
Filed
August 17, 2022, 7:59 PM ET
Mr. Wild’s employment by Alpha US terminated immediately prior to the closing of the Acquisition.
Appointed

Geoff Wild

Class III Director
MKSI · MKS INC
Effective
2022-08-17
Filed
August 17, 2022, 7:59 PM ET
Geoff Wild’s appointment as a Class III Director of the Company became effective.
Appointed

James A. Schreiner

Senior Vice President and Chief Operating Officer, Materials Solutions Division
MKSI · MKS INC
Effective
2022-08-17
Filed
August 17, 2022, 7:59 PM ET
Mr. Schreiner’s appointment as Senior Vice President and Chief Operating Officer, Materials Solutions Division, became effective.

Earnings & guidance

2026-Q1 EPS reported $1.18 vs consensus $2.08 ▼ miss (-43.4%) filing →

Materiality & sentiment trend

Max materiality 0.95 · Median 0.65 · Most common event earnings

20 positive 4 negative 26 neutral

source · MKSI on sec.gov