Form 8-K

8-K — Cyngn Inc.

Accession: 0001213900-26-041070

Filed: 2026-04-07

Period: 2026-04-03

CIK: 0001874097

SIC: 7371 (SERVICES-COMPUTER PROGRAMMING SERVICES)

Item: Changes in Registrant's Certifying Accountant

Item: Financial Statements and Exhibits

Documents

8-K — ea0285300-8k_cyngn.htm (Primary)

EX-16.1 — LETTER FROM CBIZ CPAS P.C. TO THE SECURITIES AND EXCHANGE COMMISSION DATED APRIL 3, 2026 (ea028530001ex16-1.htm)

GRAPHIC (ea028530001_ex16-1img1.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K — CURRENT REPORT

8-K (Primary)

Filename: ea0285300-8k_cyngn.htm · Sequence: 1

false

0001874097

2026-04-03

iso4217:USD

xbrli:shares

iso4217:USD

xbrli:shares

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):

April 3, 2026

CYNGN INC.

(Exact name of registrant as specified in charter)

Delaware

001-40932

46-2007094

(State or other jurisdiction

of incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

1344 Terra Bella Avenue

Mountain View, CA 94043

(Address of principal executive offices) (Zip Code)

(650) 924-5905

(Registrant’s telephone number, including area

code)

Not Applicable

(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 (see General

Instruction A.2. below):

☐ 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 Stock

CYN

The Nasdaq Stock Market LLC (The Nasdaq Capital

Market)

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 mart

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 Change in Registrant’s Certifying Accountant

On April 3, 2026, the Audit Committee

and Board of Directors of Cyngn Inc. (the “Company”) approved the proposed appointment of Baker Tilly US, LLP (“Baker

Tilly”) as the Company’s independent registered public accounting firm, dismissing the Company’s previous independent

public accounting firm, CBIZ CPAs P.C. (the “CBIZ”), on the same date.

During the year ended December

31, 2025, and through April 3, 2026, the date of CBIZ’s dismissal, there were (a) no disagreements (as defined in Item 304(a)(1)(iv)

of Regulation S-K and the related instructions) with CBIZ on any matter of accounting principles or practices, financial statement disclosure,

or auditing scope or procedures, which disagreements, if not resolved to the satisfaction of CBIZ, would have caused CBIZ to make reference

to such disagreement in its report and (b) no “reportable events” (as defined in Item 304(a)(1)(v) of Regulation S-K and the

related instructions), except for:

● The material weaknesses in the Company’s internal control

over financial reporting as reported in Part II, Item 9A of the Company’s Annual Report on Form 10-K for the year ended December

31, 2025, as filed with the Securities and Exchange Commission (the “SEC”) on March 27, 2026, related to the ineffective

oversight of third parties engaged to assist in the Company’s financial reporting process and the lack of appropriate technical

expertise to a complex accounting transaction.

The above reportable event was

discussed between the Audit Committee and CBIZ. CBIZ has been authorized by the Company to respond fully to the inquiries of Baker Tilly,

the successor independent registered public accounting firm, concerning the reportable event.

During the two most recent fiscal years ended December

31, 2025 and 2024 and any subsequent interim period prior to engaging Baker Tilly, neither the Company nor anyone on its behalf consulted

Baker Tilly regarding either (i) the application of accounting principles to any proposed or completed transaction, or the type of audit

opinion that might be rendered on the Company’s financial statements, and neither a written report nor oral advice was provided

to the Company that Baker Tilly concluded was an important factor considered by the Company in reaching a decision as to any accounting,

auditing or financial reporting issue; or (ii) any matter that was either the subject of a “disagreement” (as defined in Item

304(a)(1)(iv) of Regulation S-K and the related instructions) or a “reportable event” (as defined in Item 304(a)(1)(v) of

Regulation S-K and the related instructions).

The Company has provided CBIZ

with a copy of this Current Report on Form 8-K prior to filing with the SEC and requested that CBIZ furnish the Company with a letter

addressed to the SEC, pursuant to Item 304(a)(3) of Regulation S-K, stating whether it agrees with the above statements made by us in

response to Item 304(a) of Regulation S-K and, if it does not agree, the respects in which it does not agree, as required

under Item 304(a)(3) of Regulation S-K. A copy of CBIZ’s letter, dated April 3, 2026, is filed as Exhibit 16.1

(which is incorporated by reference herein) to this Current Report on Form 8-K.

Item 9.01 Financial Statements and Exhibits

Exhibit No.

Description

16.1

Letter from CBIZ CPAs P.C. to the Securities and Exchange Commission dated April 3, 2026

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

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.

Date: April 7, 2026

CYNGN INC.

By:

/s/ Natalie Russell

Natalie Russell

Chief Financial Officer

EX-16.1 — LETTER FROM CBIZ CPAS P.C. TO THE SECURITIES AND EXCHANGE COMMISSION DATED APRIL 3, 2026

EX-16.1

Filename: ea028530001ex16-1.htm · Sequence: 2

Exhibit 16.1

CBIZ CPAs P.C.

One Montgomery Street

Suite 1700

San Francisco, CA 94104

P: 415.432.6200

April 7, 2026

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We have read the statements made by Cyngn Inc. under Item 4.01 of its Form 8-K dated April 7, 2026. We agree with the statements

concerning our Firm in such Form 8-K; we are not in a position to agree or disagree with other statements of Cyngn Inc. contained therein.

Very truly yours,

/s/ CBIZ CPAs P.C.

CBIZ CPAs P.C.

CBIZCPAS.COM

GRAPHIC

Filename: ea028530001_ex16-1img1.jpg · Sequence: 3

Binary file (12514 bytes)

Download ea028530001_ex16-1img1.jpg

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 8

v3.26.1

Cover

Apr. 03, 2026

Cover [Abstract]

Document Type

8-K

Amendment Flag

false

Document Period End Date

Apr. 03, 2026

Entity File Number

001-40932

Entity Registrant Name

CYNGN INC.

Entity Central Index Key

0001874097

Entity Tax Identification Number

46-2007094

Entity Incorporation, State or Country Code

Entity Address, Address Line One

1344 Terra Bella Avenue

Entity Address, City or Town

Mountain View

Entity Address, State or Province

Entity Address, Postal Zip Code

94043

City Area Code

650

Local Phone Number

924-5905

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock

Trading Symbol

CYN

Security Exchange Name

NASDAQ

Entity Emerging Growth Company

true

Elected Not To Use the Extended Transition Period

false

- 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:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- 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:

Period Type:

duration

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- Definition

Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 7A

-Section B

-Subsection 2

+ Details

Name:

dei_EntityExTransitionPeriod

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration

- 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:

Period Type:

duration