Post-Effective Amendment to Post-Effective Amendment by Investment Company (Form 485BXT)

Securities Act Registration No. 333-178833

Investment Company Act Registration No. 811-22655

As filed with the Securities and Exchange Commission on April 9, 2026

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ý

¨

Pre-Effective Amendment No.

ý

Post-Effective Amendment No. 647

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 ý

ý

Amendment No. 650

(Check appropriate box or boxes.)

Northern Lights Fund Trust III

(Exact Name of Registrant as Specified in Charter)

225 Pictoria Drive, Suite 450, Cincinnati, OH 45246

(Address of Principal Executive Offices) (Zip Code)

Registrant's Telephone Number, including Area Code: (631) 490-4300

The Corporation Trust Company

1209 Orange Street

Wilmington, DE 19801

(Name and Address of Agent for Service)

With copy to:

JoAnn M. Strasser, Esq. Thompson Hine LLP 41 South High Street, Suite 1700 Columbus, Ohio 43215 614-469-3265 (phone) 614-469-3361 (fax)

Brian Curley Ultimus Fund Solutions, LLC 225 Pictoria Drive, Suite 450 Cincinnati, Ohio 45246 (631) 470-2688

Approximate date of proposed public offering: As soon as practicable after the effective date of the Registration Statement.

It is proposed that this filing will become effective:

¨ Immediately upon filing pursuant to paragraph (b)

ý On April 22, 2026 pursuant to paragraph (b)

¨ 60 days after filing pursuant to paragraph (a)(1)

¨ On (date) pursuant to paragraph (a)(1)

¨ 75 days after filing pursuant to paragraph (a)(2)

¨ On (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

ý This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

The sole purpose of this filing is to delay the effectiveness of the Trust's Post-Effective Amendment No. 645 to its Registration Statement until April 22, 2026. Post-Effective Amendment No. 645 to the Trust's Registration Statement relates to the Persimmon Long/Short Fund. Parts A, B and C of Registrant's Post-Effective Amendment No. 645 under the Securities Act of 1933 and Amendment No. 648 under the Investment Company Act of 1940, filed on February 5, 2026, are incorporated by reference herein.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under rule 485(b) under the Securities Act it has duly caused this registration statement to be signed on its behalf by the undersigned, duly authorized, in the City of Fort Salonga, and State of New York, on the 9^th day of April, 2026.

Northern Lights Fund Trust III

By: /s/ Brian Curley

Brian Curley, President

Pursuant to the requirements of the Securities Act, this registration statement has been signed below by the following persons in the capacities indicated on the dates indicated.

Northern Lights Fund Trust III

Name	Title
/s/ Brian Curley	President and Principal Executive Officer
Richard Gleason*	Treasurer and Principal Accounting Officer
Patricia Luscombe*	Independent Trustee
John V. Palancia*	Independent Trustee
Mark H. Taylor*	Independent Trustee
Jeffery D. Young*	Independent Trustee

*By: Date:

/s/ Brian Curley April 9, 2026

Brian Curley

*Attorney-in-Fact - Pursuant to Powers of Attorney as previously filed on May 30, 2023.