Eton Pharmaceuticals (ETON) awards 10,000 performance RSUs to director Casamento

Rhea-AI Filing Summary

CASAMENTO CHARLES J reported acquisition or exercise transactions in this Form 4 filing.

Eton Pharmaceuticals director Charles J. Casamento received a grant of 10,000 performance-vested restricted stock units, each representing one share of common stock. The award vests in full only if the share price reaches $72.36 or higher for one trading day before July 31, 2029, otherwise it is forfeited.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider CASAMENTO CHARLES J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	10,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 10,000 shares (Direct)

Footnotes (1)

1. F1. On July 31, 2026, the reporting person was granted 10,000 performance-vested restricted stock units granted under the Issuer's 2018 equity incentive plan. Each restricted stock unit represents the right to acquire one share of Issuer common stock. The award vests in full, and all restrictions lapse, immediately upon the closing price of the Issuer's common stock equaling or exceeding $72.36 per share for one trading day at any time prior to the third anniversary of the grant date. If this market condition is not satisfied prior to such date, the award will be forfeited in its entirety without consideration on July 31, 2029.The number of shares reported reflects the maximum and only number of shares issuable under the award; there is no target, threshold, or maximum range.

Key Figures

RSUs granted: 10,000 units Vesting price condition: $72.36 per share Forfeiture date: July 31, 2029 +1 more

4 metrics

RSUs granted 10,000 units Performance-vested restricted stock units granted to director Charles J. Casamento on July 31, 2026.

Vesting price condition $72.36 per share Closing price must equal or exceed this level for one trading day for vesting.

Forfeiture date July 31, 2029 Award is forfeited in full on this date if the market condition is not met.

Maximum shares issuable 10,000 shares Disclosure states this is the maximum and only number of shares under the award.

Key Terms

performance-vested restricted stock units, equity incentive plan, market condition

3 terms

performance-vested restricted stock units financial

"was granted 10,000 performance-vested restricted stock units granted under"

equity incentive plan financial

"10,000 performance-vested restricted stock units granted under the Issuer's 2018 equity incentive plan"

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

market condition financial

"If this market condition is not satisfied prior to such date, the award will be forfeited"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/04/2026 - 05:10 PM Accepted by SEC EDGAR 08/04/2026 - 05:10 PM Learn about SEC filing dates

FAQ

What insider transaction did ETON report for Charles J. Casamento?

Eton Pharmaceuticals reported that director Charles J. Casamento received a grant of 10,000 performance-vested restricted stock units. Each unit represents the right to acquire one share of the company’s common stock if vesting conditions are met.

How many shares are covered by the new equity award at ETON?

The new award covers 10,000 performance-vested restricted stock units, equal to a maximum of 10,000 shares of Eton Pharmaceuticals common stock. The disclosure states this is the maximum and only number of shares issuable under the award.

What is the vesting condition for Charles J. Casamento’s ETON stock units?

The units vest in full only if Eton’s stock closing price reaches or exceeds $72.36 per share for one trading day. This market condition must be satisfied before the third anniversary of the July 31, 2026 grant date.

When will the ETON restricted stock units be forfeited if not vested?

If the $72.36 price condition is not achieved on a single trading day before the third anniversary, the entire 10,000-unit award will be forfeited. The disclosure states forfeiture will occur on July 31, 2029 without consideration.

Does Charles J. Casamento hold these ETON shares directly after the grant?

After the grant, Charles J. Casamento holds 10,000 performance-vested restricted stock units, not yet vested common shares. Each unit represents a right to one share, which only becomes deliverable if the specified market vesting condition is satisfied.

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^*

CASAMENTO CHARLES J

(Last) (First) (Middle)

C/O ETON PHARMACEUTICALS, INC.

21925 W. FIELD PARKWAY, SUITE 235

(Street)

DEERPARK ILLINOIS 60010-7208

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Eton Pharmaceuticals, Inc. [ ETON ]

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)
07/31/2026

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

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
Common Stock	(1)	07/31/2026		A		10,000		(1)	(1)	Common Stock	10,000	$0	10,000	D

Explanation of Responses:

1. On July 31, 2026, the reporting person was granted 10,000 performance-vested restricted stock units granted under the Issuer's 2018 equity incentive plan. Each restricted stock unit represents the right to acquire one share of Issuer common stock. The award vests in full, and all restrictions lapse, immediately upon the closing price of the Issuer's common stock equaling or exceeding $72.36 per share for one trading day at any time prior to the third anniversary of the grant date. If this market condition is not satisfied prior to such date, the award will be forfeited in its entirety without consideration on July 31, 2029.The number of shares reported reflects the maximum and only number of shares issuable under the award; there is no target, threshold, or maximum range.

Remarks:

The reporting person has authorized and designated the named person to file this Form 4 on the reporting person's behalf for indefinite duration.

	/s/ Judith Matthews	08/04/2026
	** 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)