PDF Solutions director granted 2,689 RSUs

PDF Solutions Inc. director Jane Li reported receiving an equity award in the form of restricted stock units.

Rhea-AI Filing Summary

PDF Solutions Inc. director Jane Li reported receiving an equity award in the form of restricted stock units. She was granted 2,689 shares of Common Stock at no cash cost as a grant/award acquisition, increasing her directly held position to 26,632 shares after the transaction.

The footnote explains these shares are an award of Restricted Stock Units (RSUs) under the company’s Director Compensation Program. The RSUs vest in four equal installments of 25% each, on the first day of each calendar quarter after the grant effective date, contingent on her continued board service through each vesting date.

Insider Trade Summary

Grant/Award: 2,689 shares

Grant/Award 1 txn

Insider Li Ye Jane

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,689	$0.00	$0.00

Holdings After Transaction: Common Stock — 26,632 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

RSU grant size: 2,689 shares Price per share: $0.0000 per share Post-transaction holdings: 26,632 shares +1 more

4 metrics

RSU grant size 2,689 shares Restricted Stock Units awarded to director Jane Li

Price per share $0.0000 per share Grant/award acquisition, non-cash compensation

Post-transaction holdings 26,632 shares Total common stock directly held after RSU grant

Vesting schedule 4 installments of 25% RSUs vest quarterly after grant effective date

Key Terms

Restricted Stock Units, Director Compensation Program, vesting, grant/award acquisition

4 terms

Restricted Stock Units financial

"These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Director Compensation Program financial

"These shares represent an award of Restricted Stock Units (Total RSU) under the Company's Director Compensation Program."

vesting financial

"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"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

grant/award acquisition financial

"transaction_action": "grant/award acquisition""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did PDFS director Jane Li report in this Form 4 filing?

Director Jane Li reported receiving an equity grant of 2,689 shares of PDF Solutions Inc. common stock as restricted stock units. The award was granted at no cash cost and increased her directly held position to 26,632 shares following the transaction.

How many PDF Solutions (PDFS) shares did Jane Li acquire in this grant?

Jane Li acquired 2,689 shares of PDF Solutions common stock through a restricted stock unit award. These shares are part of the company’s Director Compensation Program and were not purchased on the open market, but granted as equity-based compensation for her board service.

What are the vesting terms of Jane Li’s RSU award at PDF Solutions (PDFS)?

The RSU award vests in four equal installments of 25% of the total units. Vesting occurs on the first day of each calendar quarter after the grant effective date, and each tranche requires Jane Li’s continued service on the board through the applicable vesting date.

How many PDF Solutions (PDFS) shares does Jane Li hold after this transaction?

After the RSU grant, Jane Li’s directly held PDF Solutions common stock position is 26,632 shares. This total includes the newly awarded 2,689 shares, which are structured as restricted stock units subject to quarterly vesting and continued service conditions under the director compensation program.

Was Jane Li’s PDF Solutions (PDFS) RSU grant an open-market purchase or sale?

The RSU grant was not an open-market purchase or sale. It is classified as a grant or award acquisition, with 2,689 shares of common stock granted at a price of $0.0000 per share as part of PDF Solutions’ Director Compensation Program.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/02/2026 - 04:33 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Li Ye Jane

(Last) (First) (Middle)

2858 DE LA CRUZ BLVD.

(Street)

SANTA CLARA CALIFORNIA 95050

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PDF SOLUTIONS INC [ PDFS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/01/2026		A		2,689(1)	A	(1)	26,632	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

	/s/ Adnan Raza, Attorney-in-Fact for Ye Jane Li	07/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)