Security key
693282105
PDF SOLUTIONS INC - Common Stock, par value $0.00015 per share (PDFS)
CUSIP: 693282105
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $0.00015 per share
- Total 13F shares
- 30,606,469
- Total 13F value
- $873,345,864
- Share change
- +570,818
- SEC-reported price per share
- $28.53
- Number of holders
- 187
- Value change
- +$18,721,068
- Number of buys
- 98
- Number of sells
- 83
- Shares outstanding
- 39,660,784
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
187
Top holders
10
PDFS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
PDF SOLUTIONS INC SEC filings
PDF SOLUTIONS INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 693282105
Recent filing periods:
Ownership snapshot
Top reported holders of PDFS - PDF SOLUTIONS INC - Common Stock, par value $0.00015 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
John Kachig Kibarian
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
31 Dec 2025
13D/G
3/4/5
13F
Lead comparable stake: 6.5%
13D/G row: John Kachig Kibarian
Showing 1-6 of 15 holder rows.
Quick read
John Kachig Kibarian leads the comparable SEC ownership view at 6.5%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens John Kachig Kibarian's linked filing trail.
Comparable ownership
Top 5
John Kachig Kibarian
6.5%
Kimon Michaels
4%
BlackRock, Inc.
12%
VANGUARD GROUP INC
8%
NEEDHAM INVESTMENT MANAGEMENT LLC
5.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| John Kachig Kibarian |
13D/G
3/4/5
KIBARIAN JOHN KACHIG · PRESIDENT AND CEO, Director
|
6.5%
|
$80,871,679
2,562,474 shares
|
+$1,578,000 | 31 Dec 2025 |
| Kimon Michaels |
3/4/5
EVP of Products and Solutions, Director
|
4%
|
$43,703,396
1,570,370 shares
|
— | 09 Dec 2025 |
| BlackRock, Inc. |
13F
Company
|
12%
|
$125,567,928
4,863,204 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
8%
|
$81,452,263
3,154,619 shares
|
— | 30 Sep 2025 |
| NEEDHAM INVESTMENT MANAGEMENT LLC |
13F
Company
|
5.1%
|
$52,118,961
2,018,550 shares
|
— | 30 Sep 2025 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
Company
|
3.4%
|
$34,842,567
1,349,441 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
187
Shares
30,606,469
Rows available
187
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
179
Q4 2025 holders
187
Holder diff
8
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend