MKSI SEC Filings: 8-K, 10-Q, S-3 & 424B – MKS

Financials

TYPE

HEADLINE

FILED AT

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Nov 5, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Aug 6, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

May 7, 2026

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Feb 24, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Nov 6, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Aug 7, 2025

News

TYPE

HEADLINE

FILED AT

8-K

MKS Inc. Reports Record Third Quarter 2026 Financial Results and Q4 Guidance

Nov 4, 2026

8-K

MKS Inc. to Sell Its Ophir® Optics Business to TTM Technologies, Inc. for $650 Million

Oct 19, 2026

8-K

MKS Inc. Reports Second Quarter 2026 Financial Results

Aug 5, 2026

8-K

MKS Inc. Announces Results of 2026 Annual Meeting of Shareholders

May 12, 2026

8-K

MKS Inc. Reports First Quarter 2026 Financial Results

May 6, 2026

8-K

MKS Inc. Announces Retirement of Executive Vice President and General Counsel Kathleen F. Burke

Apr 6, 2026

Prospectus

TYPE

HEADLINE

FILED AT

424B7

2,000,000 Shares

Jun 5, 2023

424B7

2,000,000 Shares

Jun 1, 2023

425

Common Stock, no par value

Mar 8, 2021

425

Common Stock, no par value

Feb 17, 2021

425

Common Stock, no par value

Feb 16, 2021

425

Common Stock, no par value

Feb 8, 2021

Registrations

TYPE

HEADLINE

FILED AT

Proxies

TYPE

HEADLINE

FILED AT

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Mar 31, 2026

DEF 14A

Form DEF 14A - Other definitive proxy statements

Mar 31, 2026

PRE 14A

Form PRE 14A - Other preliminary proxy statements

Mar 20, 2026

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Apr 1, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Apr 1, 2025

PRE 14A

Form PRE 14A - Other preliminary proxy statements

Mar 21, 2025

Ownerships

TYPE

HEADLINE

FILED AT

Lee John Tseng-Chung (Reporting)

Nov 3, 2026

SCHEDULE 13G/A

JPMORGAN CHASE & CO (Filed by)

Sep 3, 2026

Mora Elizabeth (Reporting)

Sep 2, 2026

144

Form 144 - Report of proposed sale of securities

Sep 1, 2026

Donlan Renee Martel (Reporting)

Aug 18, 2026

Lee John Tseng-Chung (Reporting)

Aug 17, 2026

Other

TYPE

HEADLINE

FILED AT