NEEDHAM INVESTMENT MANAGEMENT LLC - 31 Dec 2025 SCHEDULE 13G/A Report for PDF SOLUTIONS INC Common Stock, $0.00015 par value (PDFS)

Filing Manager
NEEDHAM INVESTMENT MANAGEMENT LLC
Reporting Manager
NEEDHAM INVESTMENT MANAGEMENT L.L.C.
Security
PDF SOLUTIONS INC Common Stock, $0.00015 par value
Symbol
PDFS
Shares outstanding
40,102,041 shares
Disclosed Ownership
1,965,000 shares
Ownership
4.9%
Form type
SCHEDULE 13G/A
Filing time
13 Feb 2026, 17:48:00 UTC
Date of event
31 Dec 2025
Previous filing
13 Nov 2025
SEC
View on sec.gov

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
NEEDHAM INVESTMENT MANAGEMENT L.L.C. 4.9% 1,965,000 0 1,965,000 By: /s/ James W. Giangrasso James W. Giangrasso, Chief Financial Officer
NEEDHAM ASSET MANAGEMENT, LLC 4.9% 1,965,000 0 1,965,000 By: /s/ James W. Giangrasso James W. Giangrasso, Authorized Person
NEEDHAM AGGRESSIVE GROWTH FUND 3.7% 1,465,000 0 1,465,000 By: /s/ James W. Giangrasso James W. Giangrasso, Chief Financial Officer
NEEDHAM GROWTH FUND 0.7% 270,000 0 270,000 By: /s/ James W. Giangrasso James W. Giangrasso, Chief Financial Officer
NEEDHAM SMALL CAP GROWTH FUND 0.6% 230,000 0 230,000 By: /s/ James W. Giangrasso James W. Giangrasso, Chief Financial Officer
GEORGE A. NEEDHAM 4.9% 1,965,000 0 1,965,000 By: /s/ George A. Needham George A. Needham