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SNES · Additional Proxy Materials (DEFA14A) · Filed June 3, 2026

Senestech Inc — Additional Proxy Materials (DEFA14A)

Form
DEFA14A
Filed
June 3, 2026
Ticker
SNES
Accession
0001628280-26-040219
Senestech Inc on Boardroom AlphaView on SEC EDGAR
Boardroom Alpha · Filing insights

SenesTech's board reduces proposed 2018 Plan shares from 1.7M to 1.2M; prior favorable votes count for the revised proposal.

About Senestech Inc
Market cap
$7M
1Y TSR
−73.0%
3Y TSR
−75.4%
Board grade
C-
Sector
Basic Materials
CEO
Michael Edell
Last annual meeting: Jun 9, 2026 · View full Senestech Inc profile →
Document

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_________________
SCHEDULE 14A
(Rule 14a 101)
_________________
INFORMATION REQUIRED IN PROXY STATEMENT
SCHEDULED 14A INFORMATION
Proxy Statement Pursuant to Section 14(a)
of the Securities Exchange Act of 1934
(Amendment No. __)
Filed by the Registrant☒
Filed by a Party other than the Registrant☐
Check the appropriate box:
☐Preliminary Proxy Statement
☐Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐Definitive Proxy Statement
☒Definitive Additional Materials
☐Soliciting Material Pursuant to §240.14a-12
SenesTech, Inc.
(Name of Registrant as Specified in its Charter)
_______________________________________________________________
(Name of Person(s) Filing Proxy Statement if other than the Registrant)
Payment of Filing Fee (Check in the appropriate box):
☒No fee required.
☐Fee paid previously with preliminary materials.
☐Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a- 6(i)(1) and 0-11.
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EXPLANATORY NOTE

On June 3, 2026, SenesTech, Inc. issued the below press release which contains information regarding the Company’s 2026 Annual Meeting of Stockholders to be held on June 9, 2026.
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SenesTech Announces Amendment to Equity Incentive Plan Proposal
PHOENIX, Ariz., June 3, 2026 – SenesTech, Inc. (NASDAQ: SNES) (“SenesTech” or the “Company”), today announced that its Board of Directors has approved an amendment to the proposed changes to the Company’s 2018 Equity Incentive Plan (the “2018 Plan”), which is being presented for stockholder approval at the Company’s 2026 Annual Meeting of Stockholders scheduled for June 9, 2026.
As previously disclosed in the Company’s definitive Proxy Statement filed on April 29, 2026, stockholders are being asked to approve an amendment to the 2018 Plan to increase the number of shares available for future equity awards. Following further review of the Company’s anticipated equity compensation needs, current market conditions and stockholder considerations, the Board approved a revised amendment that reduces the number of new shares proposed to be added to the 2018 Plan from 1.7 million shares to 1.2 million shares. The Board believes these actions reflect a balanced approach to equity compensation and capital management.
Stockholders who have already submitted, or subsequently submit, a proxy card or vote via the Internet or by telephone in favor of Proposal No. 3 will be deemed to have voted in favor of Proposal No. 3 as revised by the supplemental proxy materials. Accordingly, no additional action is required from stockholders who have previously voted in favor of Proposal No. 3 and do not wish to change their vote.
Additional information regarding the revised proposal is contained in the Company’s definitive additional proxy materials filed with the Securities and Exchange Commission on May 27, 2026.
About SenesTech, Inc.
SenesTech is committed to creating healthier environments by managing animal pest populations through birth control. The company’s groundbreaking products, including Evolve rodent birth control, integrate seamlessly into pest management programs, significantly enhancing their effectiveness while reducing reliance on traditional poisons. SenesTech’s mission is to create cleaner cities, more efficient businesses, and healthier communities with products that are effective and sustainable.
For more information, visit https://senestech.com.
Safe Harbor Statement
This press release contains forward-looking statements within the meaning of federal securities laws. These statements are based on current expectations and assumptions and are subject to risks and uncertainties that could cause actual results to differ materially. Factors that could cause such differences include, among others, variability in field conditions, implementation practices, market acceptance of our products, regulatory considerations, and other risks described in SenesTech’s filings with the Securities and Exchange Commission. Forward-looking statements speak only as of the date made, and the Company undertakes no obligation to update them except as required by law.

Investor Contact:
Robert Blum, Lytham Partners, LLC
(602) 889-9700, senestech@lythampartners.com
Company Contact:
Tom Chesterman, SenesTech, Inc.
(928) 233-7533, investors@senestech.com
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Frequently asked questions

When did Senestech Inc file this DEFA14A?
Senestech Inc (SNES) filed this Additional Proxy Materials (DEFA14A) with the SEC on June 3, 2026. The accession number assigned by EDGAR is 0001628280-26-040219.
What does a DEFA14A disclose?
DEFA14A is additional definitive proxy soliciting material filed in connection with a shareholder meeting — supplemental letters, slides, or amendments issued after the main proxy statement.
What is the key takeaway from this filing?
SenesTech's board reduces proposed 2018 Plan shares from 1.7M to 1.2M; prior favorable votes count for the revised proposal. This is Boardroom Alpha's one-line summary of the additional proxy materials; see the full filing text above for the formal disclosure.
Where can I find Senestech Inc's prior proxy statements on EDGAR?
The SEC EDGAR browser lists every DEFA14A Senestech Inc has filed under CIK 1680378, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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