Lexicon director granted options and RSUs

LEXICON PHARMACEUTICALS director Sam L. Barker received new equity awards.

Rhea-AI Filing Summary

LEXICON PHARMACEUTICALS director Sam L. Barker received new equity awards. On May 1, 2026, he was granted a stock option for 43,478 shares of common stock at an exercise price of $1.61 per share, vesting in three equal annual installments on each of the first three anniversaries of the grant date.

He also received 35,714 restricted stock units (RSUs), each representing one share of common stock. These RSUs vest in full on the first anniversary of the grant date, providing additional equity-based compensation tied to continued service.

Insider Trade Summary

Grant/Award: 79,192 shares

Grant/Award 2 txns

Insider BARKER SAM L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	35,714	$0.00	$0.00
Grant/Award	Stock Option (Right to Buy)	43,478	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 35,714 contracts (Direct); Stock Option (Right to Buy) — 43,478 contracts (Direct)

Footnotes (3)

1. F1. Restricted stock unit vests with respect to 100% of the shares subject to the restricted stock unit on the first anniversary of the grant date.
2. F2. Each restricted stock unit represents a contingent right to receive one share of common stock.
3. F3. Option vests with respect to one third of the shares subject to the option on each of the first three anniversaries of the grant date.

Key Figures

Stock option size: 43,478 shares Option exercise price: $1.61 per share Option expiration: May 1, 2036 +3 more

6 metrics

Stock option size 43,478 shares Option grant on May 1, 2026

Option exercise price $1.61 per share Stock option strike price

Option expiration May 1, 2036 Option term end date

RSU grant size 35,714 units Restricted stock units granted May 1, 2026

RSU vesting 100% after 1 year Vests on first anniversary of grant

Option vesting schedule 1/3 each year over 3 years Annual installments from grant date

Key Terms

Restricted Stock Units, Stock Option (Right to Buy), grant date, vests

4 terms

Restricted Stock Units financial

"Restricted stock unit vests with respect to 100% of the shares subject to the restricted stock unit"

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.

Stock Option (Right to Buy) financial

"Option vests with respect to one third of the shares subject to the option"

grant date financial

"on the first anniversary of the grant date"

The grant date is the day a company formally gives an employee or contractor the right to receive stock-based compensation, such as stock options or restricted shares. It matters to investors because it fixes key terms—like the price, the start of the ownership clock, and when the award will affect the company’s financial statements and share count—so it can influence dilution, reported expenses, and potential future selling pressure.

vests financial

"Restricted stock unit vests with respect to 100% of the shares"

FAQ

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

What equity awards did Sam L. Barker receive from Lexicon Pharmaceuticals (LXRX)?

Sam L. Barker received a stock option for 43,478 shares and 35,714 restricted stock units. Both awards relate to Lexicon common stock and represent equity-based compensation rather than open-market purchases or sales, aligning his interests with long-term shareholder value.

What are the key terms of the new stock option granted by Lexicon Pharmaceuticals (LXRX)?

The stock option covers 43,478 shares of Lexicon common stock at an exercise price of $1.61 per share. It vests in three equal annual installments over three years from the grant date and expires on May 1, 2036, if not exercised earlier.

How do the Lexicon Pharmaceuticals (LXRX) restricted stock units for Sam L. Barker vest?

The 35,714 restricted stock units vest 100% on the first anniversary of the grant date. Each RSU entitles Barker to receive one share of Lexicon common stock upon vesting, subject to continued service and the plan’s standard conditions.

Does this Lexicon Pharmaceuticals (LXRX) Form 4 show any stock sales by Sam L. Barker?

The Form 4 shows no stock sales by Sam L. Barker. It reports only award-type acquisitions: a stock option and restricted stock units granted as compensation, with no open-market buying or selling activity disclosed in this filing.

What is the expiration date of Sam L. Barker’s new Lexicon Pharmaceuticals (LXRX) stock option?

The new stock option granted to Sam L. Barker expires on May 1, 2036. If the option is not exercised by that date, it will lapse, consistent with typical long-term incentive structures for directors at public companies.

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

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Accepted by SEC EDGAR 05/04/2026 - 04:32 PM EDT 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^*

BARKER SAM L

(Last) (First) (Middle)

2445 TECHNOLOGY FOREST BLVD.

11TH FLOOR

(Street)

THE WOODLANDS TEXAS 77381

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
LEXICON PHARMACEUTICALS, INC. [ LXRX ]

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)
05/01/2026

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

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
Restricted Stock Units	$0	05/01/2026		A		35,714		(1)	(2)	Common Stock	35,714	$0	35,714	D
Stock Option (Right to Buy)	$1.61	05/01/2026		A		43,478		(3)	05/01/2036	Common Stock	43,478	$0	43,478	D

Explanation of Responses:

1. Restricted stock unit vests with respect to 100% of the shares subject to the restricted stock unit on the first anniversary of the grant date.

2. Each restricted stock unit represents a contingent right to receive one share of common stock.

3. Option vests with respect to one third of the shares subject to the option on each of the first three anniversaries of the grant date.

	/s/ Samuel L. Barker	05/04/2026
	** 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)