SenesTech CFO granted 75,000 stock options

SenesTech, Inc. reported that its CFO and Treasurer, Thomas C. Chesterman, received a grant of stock options covering 75,000 shares of common stock.

Rhea-AI Filing Summary

SenesTech, Inc. reported that its CFO and Treasurer, Thomas C. Chesterman, received a grant of stock options covering 75,000 shares of common stock. The options have an exercise price of $1.65 per share and expire on June 15, 2036.

The award vests in 12 equal quarterly installments over three years, giving the executive the right to buy up to 75,000 shares of SenesTech common stock if the options are exercised after vesting.

Insider Trade Summary

Grant/Award: 75,000 shares

Grant/Award 1 txn

Insider CHESTERMAN THOMAS C

Role CFO & Treasurer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	75,000	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 75,000 contracts (Direct)

Footnotes (1)

1. F1. Quarterly over 3 years (12 equal quarterly installments).

Key Figures

Option grant size: 75,000 options Exercise price: $1.65 per share Underlying shares: 75,000 shares +3 more

6 metrics

Option grant size 75,000 options Stock Option (right to buy) grant to CFO

Exercise price $1.65 per share Conversion or exercise price of option award

Underlying shares 75,000 shares Common Stock underlying the options

Post-transaction derivative holdings 75,000 options Total derivative securities following the transaction

Option expiration date June 15, 2036 Expiration of the stock option award

Vesting schedule 12 quarterly installments over 3 years Footnote: Quarterly over 3 years

Key Terms

Stock Option (right to buy), grant/award acquisition, derivative securities, exercise price, +1 more

5 terms

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

grant/award acquisition financial

"transaction_action: grant/award acquisition"

derivative securities financial

"derivativeTransactionCount for derivative-type records"

Financial contracts whose value is tied to the price or performance of another asset, such as a stock, bond, commodity, index, or currency; examples include options, futures and swaps. They matter to investors because they let you protect against price swings, bet on future moves or gain larger exposure with less upfront cash—like using a lever or insurance policy on an investment—so they can amplify gains and losses and help manage portfolio 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.

vesting financial

"Quarterly over 3 years (12 equal quarterly installments)."

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.

FAQ

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

What did SenesTech (SNES) disclose about its CFO in this Form 4?

SenesTech disclosed that CFO and Treasurer Thomas C. Chesterman received a grant of stock options for 75,000 shares. These options provide the right to purchase SenesTech common stock at a fixed exercise price if and when they vest and are exercised.

How many SenesTech (SNES) stock options were granted to the CFO?

The CFO received stock options covering 75,000 shares of SenesTech common stock. This grant represents the number of underlying shares the executive can purchase if the options vest and are exercised according to the award’s terms.

What is the exercise price of the SenesTech (SNES) CFO’s stock options?

The stock options granted to the SenesTech CFO have an exercise price of $1.65 per share. This means the executive can buy common shares at $1.65 if the options vest and are exercised before expiration.

When do the SenesTech (SNES) CFO stock options vest?

The options vest over three years in 12 equal quarterly installments. This quarterly vesting schedule gradually makes portions of the 75,000-share award exercisable, aligning the grant with ongoing service over the three-year period.

When do the SenesTech (SNES) CFO’s stock options expire?

The stock options granted to the SenesTech CFO expire on June 15, 2036. After this expiration date, any unexercised options will lapse and no longer give the right to purchase SenesTech common stock at the $1.65 exercise price.

How many SenesTech (SNES) derivative securities does the CFO hold after this grant?

Following the transaction, the CFO is reported as holding 75,000 derivative securities related to this option award. These represent rights to acquire an equivalent number of SenesTech common shares if the options vest and are exercised.

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^*

CHESTERMAN THOMAS C

(Last) (First) (Middle)

C/O SENESTECH, INC.

13430 N DYSART RD STE 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)

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

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		75,000		09/15/2026(1)	06/15/2036	Common Stock	75,000	$0	75,000	D

Explanation of Responses:

1. Quarterly over 3 years (12 equal quarterly installments).

Remarks:

	/s/ Thomas C. Chesterman	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)