David G. Barnes - 14 May 2026 Form 4 Insider Report for CSG SYSTEMS INTERNATIONAL INC (CSGS)

Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
18 May 2026, 16:30:31 UTC
Prior SEC filing
11 Jun 2025
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Andrea Matheny, attorney-in-fact

Key filing fact

David G. Barnes filed Form 4 for CSG SYSTEMS INTERNATIONAL INC (CSGS) on 18 May 2026.

Key facts

  • This page summarizes David G. Barnes's Form 4 filing for CSG SYSTEMS INTERNATIONAL INC (CSGS).
  • 1 reported transaction and 0 derivative rows are listed below.
  • Accepted by SEC: 18 May 2026, 16:30.

Change

  • Previous filing in this sequence was filed on 11 Jun 2025.
  • 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 (1)

CIK 0001600337 Primary reporting owner

Barnes David G

Relationship
Director
Address
169 INVERNESS DR. W SUITE 300, ENGLEWOOD
Signature
/s/ Andrea Matheny, attorney-in-fact
Signature date
18 May 2026

Reported non-derivative transactions

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

CSGS transaction

Common Stock

Disposed to Issuer

Transaction value
Shares
-40,678
Change %
-100%
Price
$80.70*
Shares after
0
Date
14 May 2026
Ownership
Direct
Footnotes
F1, F2
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

David G. Barnes is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 2 footnotes

Footnote F1

On May 14, 2026, pursuant to that certain Agreement and Plan of Merger, dated as of October 29, 2025 (the "Merger Agreement"), by and among CSG Systems International, Inc. (the "Issuer"), NEC Corporation ("Parent") and Canvas Transaction Company, Inc., a direct or indirect wholly owned subsidiary of Parent ("Merger Sub"), Merger Sub merged with and into the Issuer (the "Merger"), with the Issuer surviving the Merger as a wholly owned subsidiary of Parent. Pursuant to the Merger Agreement, each share of Issuer common stock, par value $0.01 per share, and each unvested share of restricted stock ("RSA") held by the Reporting Person immediately prior to the closing of the Merger was converted into the right to receive $80.70 in cash, without interest, less any applicable withholding taxes.

Footnote F2

Includes 3,085 RSAs. Any payment with respect to unvested RSAs will be subject to vesting conditions on substantially the same terms and conditions as applied to such awards immediately prior to the effective time of the Merger, except for terms rendered inoperative by reason of the Merger.

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