Activity Companies Alerts About

John K. Kibarian owns 6.07% of PDF Solutions

2,562,474 shares as of the September 1, 2026 filing, worth $105M at the latest close.

PDFS · $1.7B market cap · Founder-led
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Free.
The stake
6.07%
worth $105M at the latest close
Stake rank
#431
by dollar value of the stake
Last sale
None
no sales since 2025
Last buy
609 days ago
Feb 25, 2025 · $1.1M

John K. Kibarian owns 6.07% of PDF SOLUTIONS INC: 2,562,474 of 42,227,216 shares, worth about $105M at the 2026-10-26 close. The stake has moved from 6.55% in 2025 to 6.07% on 2026-09-01, across 0 sales and 1 purchase that moved it since 2016. The last trade that moved it was a discretionary purchase of $1.1M on 2025-02-25.

How the stake is held

as of the Sep 1, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Sep 1, 2026 · Form 4 ↗
HELD DIRECTLY
39,718
1.5%
HELD INDIRECTLY · By Trust
2,522,756
98.5%
THE STAKE
2,562,474
6.07%