ADVENT INTERNATIONAL, L.P. - 01 Sep 2026 Form 4 Insider Report for NCS Multistage Holdings, Inc. (NCSM)

Reporting relationship: 10%+ Owner
Issuer ticker: NCSM
Reported as of: 01 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 01 Sep 2026, 18:31:03 UTC
Prior SEC filing: 29 Jul 2026
Source filing: View source filing
Reporting owner signature: ADVENT INTERNATIONAL, L.P., By: Advent International GP, LLC, its General Partner, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Senior Director, Fund Administration

Key filing fact

ADVENT INTERNATIONAL, L.P. filed Form 4 for NCS Multistage Holdings, Inc. (NCSM) on 01 Sep 2026.

Key facts

This page summarizes ADVENT INTERNATIONAL, L.P.'s Form 4 filing for NCS Multistage Holdings, Inc. (NCSM).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 01 Sep 2026, 18:31.

Change

Previous filing in this sequence was filed on 29 Jul 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 (3)

CIK 0001034196 Primary reporting owner

ADVENT INTERNATIONAL, L.P.

Relationship: 10%+ Owner
Address: PRUDENTIAL TOWER, 800 BOYLSTON STREET, SUITE 3300, BOSTON
Signature: ADVENT INTERNATIONAL, L.P., By: Advent International GP, LLC, its General Partner, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Senior Director, Fund Administration
Signature date: 01 Sep 2026

CIK 0001984045

ADVENT INTERNATIONAL GP, LLC

Relationship: 10%+ Owner
Address: PRUDENTIAL TOWER, 800 BOYLSTON STREET, SUITE 3300, BOSTON
Signature: ADVENT INTERNATIONAL GP, LLC, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Senior Director, Fund Administration
Signature date: 01 Sep 2026

CIK 0001692560

Advent-NCS Acquisition Limited Partnership

Relationship: 10%+ Owner
Address: PRUDENTIAL TOWER, 800 BOYLSTON STREET, SUITE 3300, BOSTON
Signature: ADVENT-NCS ACQUISITION LIMITED PARTNERSHIP, By: Advent-NCS GP LLC, its General Partner, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Senior Director, Fund Administration
Signature date: 01 Sep 2026

Reported non-derivative transactions

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

NCSM transaction

Common Stock

Sale

Transaction value
Shares: -1,478,426
Change %: -100%
Price
Shares after: 0
Date: 01 Sep 2026
Ownership: See footnotes
Footnotes: F1, F2, F3

NCSM transaction

Common Stock

Sale

Transaction value
Shares: -1,478,426
Change %: -100%
Price
Shares after: 0
Date: 01 Sep 2026
Ownership: See footnotes
Footnotes: F1, F2, F3

NCSM transaction

Common Stock

Sale

Transaction value
Shares: -1,478,426
Change %: -100%
Price
Shares after: 0
Date: 01 Sep 2026
Ownership: See footnotes
Footnotes: F1, F2, F3

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

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

ADVENT INTERNATIONAL, L.P. is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 3 footnotes

Footnote F1

The reported securities were disposed of in connection with the consummation of a merger of the Issuer into a wholly-owned subsidiary of Weatherford International plc, for aggregate consideration of $19,666,839.72 in cash and 357,159 ordinary shares of Weatherford International plc.

Footnote F2

The reported amount gives effect to a 1-for-20 reverse stock split on December 1, 2020.

Footnote F3

The board of Advent International GP, LLC appoints the investment committee of Advent International, L.P. (together, "Advent" and the "Investment Committee," respectively). Such Investment Committee has voting and investment power with respect to the securities that were directly held by Advent-NCS Acquisition Limited Partnership on behalf of various funds and accounts managed by Advent (which may have been included on prior Statements filed with respect to the Issuer). Accordingly, Advent International, L.P. and Advent International GP, LLC may each be deemed to beneficially own the securities directly held by Advent-NCS Acquisition Limited Partnership. Each of the Reporting Persons disclaim such beneficial ownership, except to the extent of their respective pecuniary interest therein, if any, and this Statement shall not be deemed an admission of beneficial ownership of any of the reported securities for purposes of Section 16 or any other purpose.