Yang Tseli Lily 4

4 · CSG SYSTEMS INTERNATIONAL INC · Filed May 18, 2026

AI-generated summary of this filing

Updated May 19, 2026

CSG SYSTEMS (CSGS) Director Lily Yang Sells 18,464 Shares

What Happened

Lily Yang, a director of CSG Systems International, disposed of 18,464 shares on May 14, 2026. The shares were converted into the right to receive $80.70 per share in cash under the company’s merger agreement, for aggregate proceeds of $1,490,045. This was a disposition to the issuer as part of the merger, not an open-market sale.

Key Details

Transaction date and price: May 14, 2026 — $80.70 per share.
Total proceeds: $1,490,045.
Transaction code/type: Disposition to the issuer (D) — merger cash-out under the Merger Agreement dated Oct 29, 2025.
Includes 3,085 restricted stock awards (RSAs); payments for unvested RSAs are subject to vesting conditions on substantially the same terms as before the merger (per filing).
Filing date: May 18, 2026 — filed within the SEC’s two-business-day window (timely).
Shares owned after transaction: Not specified in the provided filing excerpt.

Context

Per the Merger Agreement, each share and each unvested restricted share was converted into the right to receive $80.70 in cash (footnote detail). Dispositions in connection with a company sale or merger are routine and reflect the transaction terms rather than an insider’s open-market trading decision.

Form 4Exit

Period: 2026-05-14

Director

Transactions

Disposition to Issuer
Common Stock
[F1][F2]
2026-05-14$80.70/sh−18,464$1,490,045→ 0 total

Footnotes (2)

[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.
[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.

Signature

/s/ Andrea Matheny, attorney-in-fact|2026-05-18

1 file