Company: DVS
Filing Date: 2025-10-03
Form Type: 6-K/A
Source: 0001062993-25-015900
Chunk: 0

Company: DOLLY VARDEN SILVER CORP
Filing Date: 2025-10-03
Form: 6-K/A
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K/A

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of:

Commission File Number:

(Translation of registrant's name into English)

595 Burrard Street, Suite 3123

Vancouver BC, Canada V7X 1J1
(604) 609-5137
(Address of principal executive office)</div>

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [ ] Form 40-F [ X ]

<div align='center'>Explanatory Note</div>

This Amendment No. 1 to Dolly Varden Silver Corporation's (the "Company") current report on Form 6-K (this "Form 6-K/A") amends and supersedes the current report on Form 6-K furnished by the Company dated October 1, 2025 (the "Form 6-K"). The revised version of the News Release, furnished as Exhibit 99.1 to this Form 6-K/A, corrects the prior version furnished in the Form 6-K by correcting a typographical error.

All currency amounts referred to in the News Release are expressed in Canadian dollars.

Other than as expressly set forth above, this Form 6-K/A does not, and does not purport to, amend, update or restate the information in any other item of or exhibit to the Form 6-K, or reflect any events that have occurred after the Form 6-K was originally filed.

<div align='center'>EXHIBIT INDEX</div>

<div align='center'>SIGNATURES</div>

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, thereunto duly authorized.

| Date: October 2, 2025 | Dolly Varden Silver Corporation 
 By:                             | /s/Ann Fehr             |
|:----------------------|:--------------------------------|:------------------------|
|                       | Name:                           | Ann Fehr                |
|                       | Title:                          | Chief Financial Officer |