CMCL 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

Form 6-K

Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 Of the Securities Exchange Act of 1934

For the month of May 2026 Commission File Number: 001-38164

CALEDONIA MINING CORPORATION PLC (Translation of registrant's name into English)

2 Mulcaster StreetSt Helier Jersey JE2 3NJ (Address of principal executive office)

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 ☐

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, thereunto duly authorized.

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EXHIBIT INDEX

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Exhibit 99.1

CaledoniaMining Corporation Plc

Refilingof Bilboes Gold Project Feasibility Study National Instrument 43-101

TechnicalReport

(NYSE AMERICAN: CMCL; AIM: CMCL; VFEX: CMCL)

St Helier, 22 May, 2026: On November 24, 2025, Caledonia Mining Corporation Plc (the "Company") filed the “Bilboes Gold Project Technical Report Summary” with effective date October 31, 2025 prepared by DRA Projects (Pty) Ltd (“DRA”) on EDGAR as an exhibit to a Form 6-K Report of Foreign Private Issuer (the “Feasibility Study").

In accordance with Canadian securities regulations, the Company then filed on January 6, 2026 the “Bilboes Gold Project Feasibility Study National Instrument 43-101 Technical Report” with effective date October 31, 2025 prepared by DRA on SEDAR+ (the “Canadian Report ").

Staff at the Ontario Securities Commission (the “OSC”) have reviewed the Canadian Report and identified that some of the authors listed by DRA as qualified persons in the report did not meet the definition of a qualified person under National Instrument 43-101. DRA has therefore updated the Canadian Report by replacing those authors with individuals that meet the definition of a qualified person, and the updated Canadian Report, which is entitled “Bilboes Gold Project Matabeleland Zimbabwe National Instrument 43-101 Technical Report”, was filed on SEDAR+ yesterday.

Under US mining disclosure rules, DRA is able to act as the sole qualified person and therefore the Feasibility Study is unchanged. For the avoidance of doubt, there is no effect on the Bilboes Gold Project and the aforementioned change is solely to comply with Canadian mining disclosure rules.

Enquiries:

Head and Registered Office: Caledonia Mining Corporation Plc

2 Mulcaster Street, St Helier, Jersey, Channel Islands, JE2 3NJ

[email protected]

| | www.caledoniamining.com