PDFS · Pdf Solutions Inc

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. RSU shall vest in four (4) equal installments of twenty-five percent (25%) of the Total RSUs, with vesting occurring on the first day of each calendar quarter following the Grant Effective Date until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. RSU shall vest in four (4) equal installments of twenty-five percent (25%) of the Total RSUs, with vesting occurring on the first day of each calendar quarter following the Grant Effective Date until fully vested, subject to the Recipient's continued service through each applicable vesting date.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. RSU shall vest in four (4) equal installments of twenty-five percent (25%) of the Total RSUs, with vesting occurring on the first day of each calendar quarter following the Grant Effective Date until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of restricted stock units (Total RSU). 12.5% of the Total RSUs shall vest on the date that is six (6) months after the Vesting Start Date and 12.5% of the Total RSUs shall vest on each date that is six (6) months thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. RSU shall vest in four (4) equal installments of twenty-five percent (25%) of the Total RSUs, with vesting occurring on the first day of each calendar quarter following the Grant Effective Date until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of restricted stock units (Total RSU). 12.5% of the Total RSUs shall vest on the date that is six (6) months after the Vesting Start Date and 12.5% of the Total RSUs shall vest on each date that is six (6) months thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

Includes 1,124 shares of common stock that were purchased on January 31, 2026 under the PDF Employee Stock Purchase Plan.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of Restricted Stock Units. This is not a sale of shares in the market.

Includes 995 shares of common stock that were purchased on January 31, 2026 under the PDF Employee Stock Purchase Plan.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. RSU shall vest in four (4) equal installments of twenty-five percent (25%) of the Total RSUs, with vesting occurring on the first day of each calendar quarter following the Grant Effective Date until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. RSU shall vest in four (4) equal installments of twenty-five percent (25%) of the Total RSUs, with vesting occurring on the first day of each calendar quarter following the Grant Effective Date until fully vested, subject to the Recipient's continued service through each applicable vesting date.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of Restricted Stock Units. This is not a sale of shares in the market.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

This represents charitable donations of 5000 and 70 shares to two different institutions.

These shares represent an award of restricted stock units (Total RSUs). 12.5% of the Total RSUs will vest on January 1, 2026 and 12.5% of the Total RSU will vest each date that is 6 (six) months thereafter until fully vested, subject to the Recipient's continued service through each applicable vest date.

Includes 353 shares of common stock that were purchased on July 31, 2025 under the PDF Employee Stock Purchase Plan

These shares represent an award of restricted stock units (Total RSUs). 12.5% of the Total RSUs will vest on January 1, 2026 and 12.5% of the Total RSU will vest each date that is six (6) months thereafter until fully vested, subject to the Recipient's continued service through each applicable vest date.

Includes 1 share of common stock that was purchased on July 31, 2025 under the PDF Employee Stock Purchase Plan.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

Total Shares includes 4298 unvested restricted stock awards granted to Dr. Michaels's spouse during her employment with the Company, which are automatically forfeited and cancelled in connection with her resignation from the Company effective July 3, 2025.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

Includes 788 shares of common stock that were purchased on January 31, 2025 under the PDF Employee Stock Purchase Plan.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

Includes 479 shares of common stock that were purchased on January 31, 2025 under the PDF Employee Stock Purchase Plan.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

Represents average execution price

Shares are owned by The John Kibarian and Gloria Chen Trust for which Mr. Kibarian is a trustee

These shares were purchased in multiple transactions at prices ranging from $22.92 to $23.10 per share, resulting in a weighted average sale price of $23.0575 per share.

Represents average execution price

Shares are owned by The John Kibarian and Gloria Chen Trust for which Mr. Kibarian is a trustee

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

Includes 1 share of common stock that was purchased on July 31, 2024 under the PDF Employee Stock Purchase Plan.

Average weighted price for shares disposed in the reported transaction. The shares were sold in multiple brokers' transaction at various market prices per share ranging between $30.28 and $30.47

Average weighted price for shares disposed in the reported transaction. The shares were sold in multiple brokers' transaction at various market prices per share ranging between $30.85 and $30.89

Average weighted price for shares disposed in the reported transaction. The shares were sold in multiple brokers' transaction at various market prices per share ranging between $30.76 and $30.84

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

Includes 504 shares of common stock that were purchased on July 31, 2024 under the PDF Employee Stock Purchase Plan.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of restricted stock units (Total Shares). 12.5% of the Total Shares shall vest on the date that is six (6) month after the Vesting Start Date and 12.5% of the Total Shares shall vest on each date that is six (6) months thereafter until fully vested, subject to the recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of restricted stock units (Total Shares). 12.5% of the Total Shares shall vest on the date that is six (6) month after the Vesting Start Date and 12.5% of the Total Shares shall vest on each date that is six (6) months thereafter until fully vested, subject to the recipient's continued service through each applicable vesting date.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.

These shares represent an award of restricted stock units (Total Shares). 12.5% of the Total Shares shall vest on the date that is six (6) month after the Vesting Start Date and 12.5% of the Total Shares shall vest on each date that is six (6) months thereafter until fully vested, subject to the recipient's continued service through each applicable vesting date.

This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market.

These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program. 1/12th of the Total RSU shall vest on the grant effective date and 1/12th of the Total RSU shall vest monthly thereafter until fully vested, subject to the Recipient's continued service through each applicable vesting date.