PDF Solutions Inc (PDFS) · Insider trading
What PDF Solutions's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$227,984
2 insiders, 0% under a plan
Net, 12 months
−$227,984
bought less sold
Latest filing
2026-09-01
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Kibarian John KachigDirector, PRESIDENT AND CEO | $1.13M | – | 2 | 2025-02-25 | – |
| Strojwas AndrzejChief Technology Officer | – | $495,943 | 4 | 2026-08-31 | 90,965 |
| Gustafson Michael BDirector | $238,115 | – | 2 | 2025-05-13 | 30,074 |
| Zhang ShuoDirector | – | $77,256 | 1 | 2026-08-12 | 23,380 |
| Erba NancyDirector | – | $61,620 | 1 | 2024-12-11 | – |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-31 | Strojwas AndrzejChief Technology Officer | Sale | 3,394 | 44.41 | $150,728 | 90,965 | Form 4 |
| 2026-08-12 | Zhang ShuoDirector | Sale | 1,501 | 51.47 | $77,256 | 23,380 | Form 4 |
| 2025-05-13 | Gustafson Michael BDirector | Buy | 7,500 | 19.45 | $145,875 | 30,074 | Form 4 |
| 2025-02-25 | Kibarian John KachigDirector, PRESIDENT AND CEO | Buyindirect | 15,644 | 22.11 | $345,889 | 2,522,756 | Form 4 |
| 2025-02-24 | Kibarian John KachigDirector, PRESIDENT AND CEO | Buyindirect | 34,356 | 22.80 | $783,317 | 2,507,112 | Form 4 |
| 2025-02-24 | Gustafson Michael BDirector | Buy | 4,000 | 23.06 | $92,240 | 22,574 | Form 4 |
| 2024-12-17 | Strojwas AndrzejCTO | Sale | 245 | 31.17 | $7,637 | 94,472 | Form 4 |
| 2024-12-17 | Strojwas AndrzejCTO | Sale | 6,008 | 30.36 | $182,403 | 88,464 | Form 4 |
| 2024-12-16 | Strojwas AndrzejCTO | Sale | 5,030 | 30.85 | $155,176 | 94,717 | Form 4 |
| 2024-12-11 | Erba NancyDirector | Saleindirect | 2,000 | 30.81 | $61,620 | 13,739 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
16 × grant or award10 × shares withheld for tax2 × gift
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-07-01 | Raza AdnanEVP, Finance and CFO | Shares withheld for tax F | −6,010 | 66.88 | 65,000 | Form 4 |
| 2026-07-01 | Raza AdnanEVP, Finance and CFO | Grant or award A | +23,450 | – | 80,697 | Form 4 |
| 2026-07-01 | Erba NancyDirector | Grant or award A | +2,689 | – | 11,943 | Form 4 |
| 2026-07-01 | Li Ye JaneDirector | Grant or award A | +2,689 | – | 26,632 | Form 4 |
| 2026-07-01 | Bronson Joseph RDirector | Grant or award A | +2,689 | – | 40,956 | Form 4 |
| 2026-07-01 | Chan CHI-FoonDirector | Grant or award A | +2,689 | – | 24,168 | Form 4 |
| 2026-07-01 | Gustafson Michael BDirector | Grant or award A | +2,689 | – | 40,192 | Form 4 |
| 2026-07-01 | Zhang ShuoDirector | Grant or award A | +2,689 | – | 24,881 | Form 4 |
| 2026-07-01 | Strojwas AndrzejChief Technology Officer | Shares withheld for tax F | −1,356 | 66.88 | 88,843 | Form 4 |
| 2026-07-01 | Strojwas AndrzejChief Technology Officer | Grant or award A | +5,360 | – | 94,203 | Form 4 |
| 2026-01-01 | Raza AdnanEVP, Finance and CFO | Shares withheld for tax F | −5,498 | 28.53 | 71,010 | Form 4 |
| 2026-01-01 | Strojwas AndrzejChief Technology Officer | Shares withheld for tax F | −2,762 | 28.53 | 89,204 | Form 4 |
| 2025-12-09 | Michaels KimonDirector, EVP of Products and Solutions | Gift G | −5,070 | – | 1,542,072 | Form 4 |
| 2025-08-01 | Strojwas AndrzejChief Technology Officer | Grant or award A | +8,000 | – | 91,966 | Form 4 |
| 2025-08-01 | Raza AdnanEVP, Finance and CFO | Grant or award A | +35,000 | – | 76,508 | Form 4 |
| 2025-07-01 | Strojwas AndrzejChief Technology Officer | Shares withheld for tax F | −2,497 | 21.87 | 83,613 | Form 4 |
| 2025-07-01 | Raza AdnanEVP, Finance and CFO | Shares withheld for tax F | −4,921 | 21.87 | 63,880 | Form 4 |
| 2025-07-01 | Michaels KimonDirector, EVP of Products and Solutions | Shares withheld for tax F | −798 | 21.87 | 28,298 | Form 4 |
| 2025-07-01 | Zhang ShuoDirector | Grant or award A | +7,429 | – | 22,192 | Form 4 |
| 2025-07-01 | Li Ye JaneDirector | Grant or award A | +7,429 | – | 23,943 | Form 4 |
| 2025-07-01 | Gustafson Michael BDirector | Grant or award A | +7,429 | – | 37,503 | Form 4 |
| 2025-07-01 | Erba NancyDirector | Grant or award A | +7,429 | – | 27,383 | Form 4 |
| 2025-07-01 | Chan CHI-FoonDirector | Grant or award A | +7,429 | – | 21,479 | Form 4 |
| 2025-07-01 | Bronson Joseph RDirector | Grant or award A | +7,429 | – | 38,267 | Form 4 |
| 2025-01-01 | Strojwas AndrzejCTO | Shares withheld for tax F | −2,833 | – | 85,631 | Form 4 |
| 2025-01-01 | Raza AdnanEVP, FINANCE AND CFO | Shares withheld for tax F | −5,258 | – | 68,013 | Form 4 |
| 2025-01-01 | Michaels KimonDirector, EVP OF PRODUCTS AND SOLUTIONS | Shares withheld for tax F | −870 | – | 33,394 | Form 4 |
| 2024-11-25 | Michaels KimonDirector, EVP OF PRODUCTS AND SOLUTIONS | Gift G | −8,500 | – | 1,547,142 | Form 5 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.