SenesTech director granted 100,000 stock options

SenesTech, Inc. director Graham Lynn Yako received a grant of stock options as part of his compensation.

Rhea-AI Filing Summary

SenesTech, Inc. director Graham Lynn Yako received a grant of stock options as part of his compensation. He was awarded 100,000 Stock Options (right to buy), each giving the right to purchase one share of common stock at an exercise price of $1.65 per share.

The options relate to 100,000 shares of common stock and expire on June 15, 2036. Following this grant, Yako holds 100,000 options directly. A footnote states the award vests monthly over one year in 12 equal installments, indicating a time-based vesting schedule rather than an immediate, fully vested grant.

Insider Trade Summary

Grant/Award: 100,000 shares

Grant/Award 1 txn

Insider Graham Lynn Yako

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	100,000	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 100,000 contracts (Direct)

Footnotes (1)

1. F1. Monthly over 1 year (12 equal monthly installments)

Key Figures

Options granted: 100,000 options Exercise price: $1.65 per share Underlying shares: 100,000 shares +3 more

6 metrics

Options granted 100,000 options Stock Option (right to buy) grant to director on June 15, 2026

Exercise price $1.65 per share Conversion or exercise price for granted options

Underlying shares 100,000 shares Common stock underlying the option award

Expiration date June 15, 2036 Option term end date for the grant

Post‑grant option holdings 100,000 options Total options held following the reported transaction

Vesting schedule 12 equal monthly installments over 1 year Time-based vesting of the awarded options per footnote

Key Terms

Stock Option (right to buy), Grant, award, or other acquisition, derivative, exercise price, +1 more

5 terms

Stock Option (right to buy) financial

"security_title: "Stock Option (right to buy)""

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

derivative financial

"transaction_type: "derivative""

A derivative is a financial contract whose value depends on the price or performance of another asset or measure — for example a stock, index, interest rate, commodity, or currency. Investors use derivatives like insurance or leveraged bets to hedge risk, speculate, or gain exposure without owning the underlying asset; they can protect portfolios but also amplify losses and introduce counterparty and market risk.

exercise price financial

"conversion_or_exercise_price: "1.6500""

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

underlying security financial

"underlying_security_title: "Common Stock""

FAQ

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

What did SenesTech (SNES) director Graham Lynn Yako report on this Form 4?

Graham Lynn Yako reported receiving a grant of stock options from SenesTech. The award covers 100,000 options on common stock, reflecting a compensation-related acquisition rather than an open-market trade, and establishes his initial reported option holdings with the company.

How many SenesTech (SNES) stock options were granted to Graham Lynn Yako?

He was granted 100,000 stock options, each tied to one share of SenesTech common stock. This derivative position represents his full reported option holdings following the transaction, according to the Form 4 disclosure and related transaction summary data provided.

What is the exercise price and expiration date of Graham Lynn Yako’s SenesTech options?

The options carry an exercise price of $1.65 per share and expire on June 15, 2036. This means Yako can purchase SenesTech common stock at $1.65 anytime after vesting and before the 2036 expiration date, subject to the award’s terms.

How do Graham Lynn Yako’s SenesTech stock options vest?

The options vest monthly over one year in 12 equal installments, according to a footnote. This structure spreads vesting over the first year, rewarding continued service rather than granting full, immediate ownership of all 100,000 options at once.

Was this SenesTech Form 4 transaction an open-market buy or sell of shares?

No, this Form 4 reflects a grant of stock options, not an open-market trade. The transaction is coded as a grant or award acquisition, meaning it is compensation-related rather than a discretionary purchase or sale on the open market.

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

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Accepted by SEC EDGAR 06/17/2026 - 04:20 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^*

Graham Lynn Yako

(Last) (First) (Middle)

13430 NORTH DYSART ROAD SUITE 105

(Street)

SURPRISE ARIZONA 85379

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SenesTech, Inc. [ SNES ]

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)
06/15/2026

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
Stock Option (right to buy)	$1.65	06/15/2026		A		100,000		07/15/2026(1)	06/15/2036	Common Stock	100,000	$0	100,000	D

Explanation of Responses:

1. Monthly over 1 year (12 equal monthly installments)

Remarks:

	/s/ Thomas C. Chesterman, Attorney-in-Fact	06/15/2026
	** 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)