Form 8-K
8-K — Arcadia Biosciences, Inc.
Accession: 0001193125-26-142030
Filed: 2026-04-03
Period: 2026-03-30
CIK: 0001469443
SIC: 1311 (CRUDE PETROLEUM & NATURAL GAS)
Item: Changes in Registrant's Certifying Accountant
Item: Financial Statements and Exhibits
Documents
8-K — rkda-20260330.htm (Primary)
EX-16.1 (rkda-ex16_1.htm)
XML — IDEA: XBRL DOCUMENT (R1.htm)
8-K
8-K (Primary)
Filename: rkda-20260330.htm · Sequence: 1
8-K
false000146944300014694432026-03-302026-03-30
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): March 30, 2026
Arcadia Biosciences, Inc.
(Exact name of Registrant as Specified in Its Charter)
Delaware
001-37383
81-0571538
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
5956 Sherry Lane
Suite 2000
Dallas, Texas
75225
(Address of Principal Executive Offices)
(Zip Code)
Registrant’s Telephone Number, Including Area Code: 214 974-8921
(Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading
Symbol(s)
Name of each exchange on which registered
Common
RKDA
The Nasdaq Stock Market LLC
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 4.01 Changes in Registrant’s Certifying Accountant.
(a) Dismissal of Independent Registered Public Accounting Firm
On March 30, 2026, the audit committee (the “Audit Committee”) of the board of directors of Arcadia Biosciences, Inc. (the “Company”) dismissed Deloitte & Touche LLP (“Deloitte”) as the Company’s independent registered public accounting firm.
Deloitte’s audit reports on the Company’s consolidated financial statements for the years ended December 31, 2025 and December 31, 2024 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles, other than the explanatory paragraph regarding the Company’s ability to continue as a going concern due to the Company's accumulated deficit, recurring net losses and net cash used in operations, and resources that will not be sufficient to meet its anticipated cash requirements.
During the Company’s two most recent fiscal years and the subsequent interim period through March 30, 2026, there were no (i) disagreements as defined in Item 304(a)(1)(iv) of Regulation S-K under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the related instructions thereto, between the Company and Deloitte on any matter of accounting principles or practice, financial statement disclosure, or auditing scope or procedure that, if not resolved to Deloitte’s satisfaction, would have caused Deloitte to make reference thereto in its reports covering the Company’s consolidated financial statements for such periods, or (ii) reportable events (as defined in Item 304(a)(1)(v) of Regulation S-K under the Exchange Act), except that the Company identified material weaknesses in its internal control over financial reporting as of and for the year ended December 31, 2025, as disclosed in Part II, Item 9A, Controls and Procedures, of the Company's Annual Report on Form 10-K for the year ended December 31, 2025, filed with the Securities and Exchange Commission (the “SEC”) on March 26, 2026 (the “Form 10-K”), as described below.
As described in the Form 10-K, the Company previously identified material weaknesses in its internal control over financial reporting stemming from control deficiencies relating to (i) insufficient segregation of duties in the financial statement close process, and (ii) insufficient information system controls, including access and change management controls. The disclosure in the Form 10-K noted that the Company’s employee headcount has been reduced, resulting in insufficient personnel to maintain proper segregation of duties, which impacts the effectiveness of business process as well as information systems controls.
This reportable event was discussed among the Company’s management, the Audit Committee, and Deloitte. Deloitte has been authorized by the Company and the Audit Committee to respond fully to the inquiries of RJI, the Company’s successor independent registered public accounting firm as further described below, concerning this reportable event or other matters.
The Company has provided Deloitte with a copy of the disclosures made by the Company in response to this Item 4.01 and has requested that Deloitte furnish the Company with a letter addressed to the SEC stating whether it agrees with the statements made by the Company in response to this Item 4.01 and, if not, stating the respects in which it does not agree. A letter from Deloitte is attached hereto as Exhibit 16.1.
(b) Engagement of New Independent Registered Public Accounting Firm
On March 30, 2026, in connection with the Company’s dismissal of Deloitte, the Audit Committee approved the engagement of Ramirez Jimenez International CPAs (“RJI”), effective immediately upon the dismissal of Deloitte, as the Company’s independent registered public accounting firm, beginning with the review of the Company’s financial statements for the quarter ending March 31, 2026, and including the audit of the Company’s consolidated financial statements for the year ending December 31, 2026. The decision to retain RJI was approved by the Audit Committee.
During the Company’s two most recent fiscal years and through the date of this Current Report on Form 8-K, neither the Company, nor anyone on its behalf, consulted RJI regarding (A) the application of accounting principles to a specific transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Company’s consolidated financial statements, and neither a written report nor oral advice was provided to the Company by RJI that RJI concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing, or financial reporting issue, or (B) any matter that was either (i) the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation S-K under the Exchange Act), or (ii) a reportable event (as defined in Item 304(a)(1)(v) of Regulation S-K).
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
Exhibit No.
Description
16.1
Letter from Deloitte & Touche LLP to the Securities and Exchange Commission dated April 3, 2026
Exhibit No.
Description
104
Cover Page Interactive Data File (embedded within the Inline XBRL document)
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
ARCADIA BIOSCIENCES, INC.
Date:
April 3, 2026
By:
/s/ THOMAS J. SCHAEFER
Thomas J. Schaefer, Chief Executive Officer
EX-16.1
EX-16.1
Filename: rkda-ex16_1.htm · Sequence: 2
EX-16.1
Exhibit 16.1
April 3, 2026
Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549-7561
Dear Sirs/Madams:
We have read Items 4.01(a) and 4.01(b) of Arcadia Bioscience, Inc.’s Form 8-K dated April 3, 2026, and have the following comments:
1.
We agree with the statements made in Item 4.01(a).
2.
We have no basis on which to agree or disagree with the statements made in Item 4.01(b).
Yours truly,
/s/ Deloitte & Touche LLP
XML — IDEA: XBRL DOCUMENT
XML
Filename: R1.htm · Sequence: 5
v3.26.1
Document And Entity Information
Mar. 30, 2026
Cover [Abstract]
Document Type
8-K
Amendment Flag
false
Document Period End Date
Mar. 30, 2026
Entity Registrant Name
Arcadia Biosciences, Inc.
Entity Central Index Key
0001469443
Entity Emerging Growth Company
false
Entity File Number
001-37383
Entity Incorporation, State or Country Code
DE
Entity Tax Identification Number
81-0571538
Entity Address, Address Line One
5956 Sherry Lane
Entity Address, Address Line Two
Suite 2000
Entity Address, City or Town
Dallas
Entity Address, State or Province
TX
Entity Address, Postal Zip Code
75225
City Area Code
214
Local Phone Number
974-8921
Written Communications
false
Soliciting Material
false
Pre-commencement Tender Offer
false
Pre-commencement Issuer Tender Offer
false
Title of 12(b) Security
Common
Trading Symbol
RKDA
Security Exchange Name
NASDAQ
X
- Definition
Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.
+ References
No definition available.
+ Details
Name:
dei_AmendmentFlag
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Area code of city
+ References
No definition available.
+ Details
Name:
dei_CityAreaCode
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Cover page.
+ References
No definition available.
+ Details
Name:
dei_CoverAbstract
Namespace Prefix:
dei_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.
+ References
No definition available.
+ Details
Name:
dei_DocumentPeriodEndDate
Namespace Prefix:
dei_
Data Type:
xbrli:dateItemType
Balance Type:
na
Period Type:
duration
X
- Definition
The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.
+ References
No definition available.
+ Details
Name:
dei_DocumentType
Namespace Prefix:
dei_
Data Type:
dei:submissionTypeItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Address Line 1 such as Attn, Building Name, Street Name
+ References
No definition available.
+ Details
Name:
dei_EntityAddressAddressLine1
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Address Line 2 such as Street or Suite number
+ References
No definition available.
+ Details
Name:
dei_EntityAddressAddressLine2
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Name of the City or Town
+ References
No definition available.
+ Details
Name:
dei_EntityAddressCityOrTown
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Code for the postal or zip code
+ References
No definition available.
+ Details
Name:
dei_EntityAddressPostalZipCode
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Name of the state or province.
+ References
No definition available.
+ Details
Name:
dei_EntityAddressStateOrProvince
Namespace Prefix:
dei_
Data Type:
dei:stateOrProvinceItemType
Balance Type:
na
Period Type:
duration
X
- Definition
A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityCentralIndexKey
Namespace Prefix:
dei_
Data Type:
dei:centralIndexKeyItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Indicate if registrant meets the emerging growth company criteria.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityEmergingGrowthCompany
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.
+ References
No definition available.
+ Details
Name:
dei_EntityFileNumber
Namespace Prefix:
dei_
Data Type:
dei:fileNumberItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Two-character EDGAR code representing the state or country of incorporation.
+ References
No definition available.
+ Details
Name:
dei_EntityIncorporationStateCountryCode
Namespace Prefix:
dei_
Data Type:
dei:edgarStateCountryItemType
Balance Type:
na
Period Type:
duration
X
- Definition
The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityRegistrantName
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityTaxIdentificationNumber
Namespace Prefix:
dei_
Data Type:
dei:employerIdItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Local phone number for entity.
+ References
No definition available.
+ Details
Name:
dei_LocalPhoneNumber
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 13e
-Subsection 4c
+ Details
Name:
dei_PreCommencementIssuerTenderOffer
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 14d
-Subsection 2b
+ Details
Name:
dei_PreCommencementTenderOffer
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Title of a 12(b) registered security.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b
+ Details
Name:
dei_Security12bTitle
Namespace Prefix:
dei_
Data Type:
dei:securityTitleItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Name of the Exchange on which a security is registered.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection d1-1
+ Details
Name:
dei_SecurityExchangeName
Namespace Prefix:
dei_
Data Type:
dei:edgarExchangeCodeItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 14a
-Subsection 12
+ Details
Name:
dei_SolicitingMaterial
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Trading symbol of an instrument as listed on an exchange.
+ References
No definition available.
+ Details
Name:
dei_TradingSymbol
Namespace Prefix:
dei_
Data Type:
dei:tradingSymbolItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Securities Act
-Number 230
-Section 425
+ Details
Name:
dei_WrittenCommunications
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration