Transaction · 0001127602-25-004210

Lee John Tseng-Chung

Lee John Tseng-Chung, PRES, CEO, reported a transaction classified as grant at MKS INSTRUMENTS INC involving 12106.580000 shares. Reported holdings after the transaction were 113991.032000 shares. A 10b5-1 reference was not detected in the stored filing text.

grantSEC transaction code APRES, CEO
MKSIMKS INSTRUMENTS INC
Filing timeFeb 11
Trade dateFeb 10, 2025
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
—
Pre-filing
1mo ago1w ago1d ago
Returns since
7d30d90d180d1y

MKSI price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
MKSI since 2025-02-11Filed 570 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
grant
Code A
Identifier
0001127602-25-004210
Restricted Stock Unit
Transaction date
Feb 10, 2025
Filed Feb 11, 2025, 10:55 PM · 1d delay
Shares
12.1k sh
Price unknown
Estimated value
—
Computed from shares × price
Holdings after
113k sh
Direct

Filing warnings

Notes recorded with this filing
1 warning
missing priceThe filing did not provide a usable price per share.

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Derivative Transaction Direct Ownership
-14score
Filing-only score

-14

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

President & CEO

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

  2. F2

    These RSUs were subject to performance criteria, the achievement of which was determined on February 10, 2025, and thereafter vest in three equal annual installments beginning on February 15, 2025, pr…

Original filing · 0001127602-25-004210
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