ASX Announcements

COB - Change of Share Registry Postal Address

COB - Vale Robert McDonald

It is with deep sadness and sincere condolences that the Cobalt Blue Holdings Limited (ASX: COB) Board of Directors advises of the sudden and unexpected death of COB non-executive director Rob McDonald

COB - Final Director's Interest Notice - Rob McDonald

COB Quarterly Activities Report - March 2024

We are pleased to publish our March 2024 Quarterly Activities Report.

COB - Application for quotation of securities

COB - Notification regarding unquoted securities

COB - Cleansing Notice

COB - Proposed issue of securities

ASX:COB Successful A$5m Placement

COB - Investor Presentation April 2024

Confirmation of Release - COB - Trading Halt

Webinar Recording: Cobalt Blue and Regeneration Partnership to Commercialise Mine Waste Deposits - 4 April 2024

Cobalt Blue Project Acquisition Manager Dr Helen Degeling and Investor Relations Manager Joel Crane discuss the recently signed MOU with Regeneration Enterprises. Helen also details the massive, global opportunity for Cobalt Blue’s Waste Steams business.

Market Update: Cobalt-Nickel Refinery Progress

COB is developing the first Cobalt Sulphate Refinery (Refinery Project) in Australia.

COB - Half Year Accounts - December 2023

COB - Application for quotation of securities

COB - Cleansing Notice

Confirmation of Release - FCL - S&P DJI Announces March 2024 Quarterly Rebalance

Market Update: Broken Hill Cobalt Project and Cobalt-Nickel Refinery Update

COB - Revised Share Trading Policy

COB Quarterly Activities Report - December 2023

We are pleased to publish our December 2023 Quarterly Activities Report. It was another busy period for COB, and we were excited to produce the results of the Cobalt-Nickel Refinery Study and map out the path to becoming the first Australian producer of battery -grade sulphate by next year. Please see the full report for greater details and updates on all of our activities as well as an update on the trends in the global cobalt market.

Cobalt-Nickel Refinery Project Update

Cobalt Blue is pleased to announce an update of our proposed Cobalt-Nickel Refinery in Western Australia’s Kwinana Industrial Area.

COB - Change of Director's Interest Notice x 4

COB - Application for quotation of securities

COB - Application for quotation of securities

COB - Notification regarding unquoted securities

COB - Notification regarding unquoted securities

COB - Cleansing Notice

Market Update: Iwatani Corporation to partner on Cobalt-Nickel Refinery

Cobalt Blue is delighted to name Iwatani Corporation as our potential partner (subject to binding agreement) in developing the Cobalt-Nickel Refinery Project – to be located in the Kwinana Industrial Area, 30km south of Perth in Western Australia.

Market Update: Broken Hill Cobalt Project Mineral Resource Estimate

COB has updated the Broken Hill Cobalt Project (BHCP) Mineral Resource estimate following the completion of the 2022-23 drilling program. Measured Resources have increased by 32% when compared with the former estimate (2021).

WEBINAR Recording: Strategic Update, including the announcement to progress the Cobalt Nickel Refinery Project in 2024

In this webinar, Joe Kaderavek (CEO), Dr Andrew Tong (Executive Manager) and Joel Crane (Investor Relations/Commercial Manager) provide an update on: progress of the Definitive Feasibility Study for the Broken Hill Cobalt Project, details of the recently released Study on our proposed Cobalt Nickel Refinery in Western Australia, and positive results of testwork on samples from the Flin Flon (Canada) tailings facility.

Strategic Update: COB to Progress Cobalt-Nickel Refinery Project in 2024

The Refinery is a proposed large-scale, cobalt-nickel operation representing Australia’s first cobalt refinery that will produce high-quality, battery-grade cobalt sulphate that is intended for IRA-compliant markets. It will be among the first large Allied Nation investments in cobalt refining for decades. The Refinery is expected to establish COB as an early entrant into the emerging midstream segment of the Allied Battery Supply Chain.

COB - Chair & CEO Presentation to Annual General Meeting 2023

COB - Results of 2023 AGM

COB - Change of Auditor

Flin Flon Tailings Test Work: Positive Results

Cobalt Blue Holdings Limited (COB) and Hudbay Minerals Inc. previously announced a test work co-operation agreement examining the use of COB technology to treat Hudbay’s Flin Flon tailings. COB is pleased to announce we have completed preliminary test work with positive results warranting further evaluation in the next stage.

COB Quarterly Activities Report – September 2023

Notice of 2023 Annual General Meeting and Proxy Form

COB - Finalised Mining Lease Application Lodged

Mining Lease Application 634 (‘MLA634’) has been submitted and complements our earlier application (‘MLA614’). Collectively with existing Mining Leases, MLA614 and MLA634 cover the area required for development of the Broken Hill Cobalt Project (‘BHCP’).

COB 2023 Annual Report

COB 2023 Corporate Governance Statement

COB 2023 Appendix 4G

COB - Change of Director's Interest

COB - Application for quotation of securities

COB - Application for quotation of securities

COB - Cleansing Notice

COB ASX Investor Webinar Presentation

COB Market Update: Demonstration Plant success. Refinery Development Program launched

We are pleased to provide a Demonstration Plant update as well as cobalt sulphate refinery developments.

COB Quarterly Activities Report - June 2023

We are pleased to publish our June 2023 Quarterly Activities Report. See inside for a detailed update on all three of our building block strategies (The Broken Hill Cobalt Project, Kwinana Cobalt Refinery Project and Cobalt in Waste Streams Projects). An update on the trends in the global cobalt is also featured.

Flin Flon Tailings Testwork Agreement with Hudbay Minerals Inc.

Cobalt Blue Holdings Limited (“COB”) is pleased to announce that it has entered into a testwork co-operation agreement with Hudbay Minerals Inc. with respect to Hudbay’s wholly-owned Flin Flon tailings storage facility located in the Province of Manitoba, Canada.

COB - Change of Director's Interest Notice - Joe Kaderavek

Definitive Feasibility Study Update

COB is managing the delivery of the Broken Hill Cobalt Project (BHCP) Definitive Feasibility Study (DFS). This update provides insights on a range DFS activities including the Demonstration Plant, Kwinana Refinery Project and Australian Government Support.

COB - Notification regarding unquoted securities

Cobalt Blue Holdings Limited - March 2023 Quarterly Report

The Cobalt Blue Quarterly Report for March 2023 has been published

COB - CEO's Letter to Shareholders

Cobalt Blue Holdings Ltd (ASX:COB) is pleased to announce the release of the CEO’s Letter to Shareholders. The letter provides an overview of COB’s strategy amid the global critical minerals backdrop. COB recently issued guidance on the progress of our Broken Hill Cobalt Project (BHCP), proposed Cobalt Refinery and Cobalt in Waste Streams projects. This letter details how all the pieces fit together.

COB - Webinar Presentation - Wednesday 29 March 2023

COB – Definitive Feasibility Study Update

The Broken Hill Cobalt Project (BHCP) Definitive Feasibility Study (DFS) remains on track for completion by end-3Q

COB - Half Year Report 2023

Confirmation of Release - S32 - S&P DJI Announces March 2023 Quarterly Rebalance

COB - Quarterly Activities/Appendix 5B Cash Flow Report

COB - Change of Director's Interest Notice

COB - Change of Director's Interest Notice

COB - Notification regarding unquoted securities

COB - Application for quotation of securities

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Change of Director's Interest Notice(s)

COB - Cleansing Notice

COB Demonstration Plant Update: High Grade Concentrate Results

The Broken Hill Cobalt Project achieved another milestone and further evidence of its viability, with higher than expected levels of cobalt recovery for the concentrator circuit.

COB - Application for quotation of securities

COB - Entitlement Issue Results and Shortfall Placement

COB - Change of Director's Interest Notice - H Keller

COB - Chairman's and CEO's Address to Shareholders

COB Chairman Rob Biancardi highlighted 11 milestones achieved this year.

COB - Results of 2022 AGM

COB - Despatch of Entitlement Issue Offer to Eligible Shareholders

COB - Letter to Ineligible Shareholders

COB - Entitlement Issue Offer Document

COB - Application for quotation of securities

COB - Cleansing Notice and Completion of Placement

COB - Placement and Entitlement Issue

COB - Investor Presentation

COB - Proposed issue of securities

COB - Proposed issue of securities

COB - Cleansing Notice

Confirmation of Release - COB - Trading Halt

Cobalt Blue Holding Limited Quarterly Report (September 2022)

The Cobalt Blue Quarterly Report for September 2022/Appendix B Cash Flow has been published

Notice of 2022 Annual General Meeting/Proxy Form

Demonstration Plant: Concentrator Circuit Update - Phase One Complete

The concentrator circuit has now completed testwork on 500 t of ore with a further 2,500 – 3,000 t of ore to be finalised shortly.

COB - Application for quotation of securities

COB - Cleansing Notice

COB 2022 Annual Report

COB - 2022 Corporate Governance Statement

COB - Appendix 4G

Webinar - COB Business Update and Broken Hill Cobalt Project (BHCP) Update

In this webinar held 30/08/2022: Joe Kaderavek (CEO), Dr Andrew Tong (Executive Manager), and Joel Crane (Investor Relations/Commercial Manager) provide an update on the progress of the BHCP

Demonstration Plant - Ore Extraction Completed

Commenting on recent events, Cobalt Blue’s Chief Executive Officer, Joe Kaderavek said: “Strong progress allowed us to extract further ore for better overall representativity. The completion of the mining, and now crushing, sets up Demonstration Plant operations in coming months”.

COB - Application for quotation of securities

COB - Notification of cessation of securities

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Cleansing Notice

COB - Change of Director's Interest Notice - Joe Kaderavek

Demonstration Plant Transitioning to Operations

Cobalt Blue Holdings Limited is now commissioning and operating a Demonstration Plant in Broken Hill

COB - Quarterly Activities/Appendix 5B Cash Flow Report

COB - Application for quotation of securities

COB Investor Webinar Presentation

Webinar Presentation - Cobalt Blue Holdings Ltd and Rho Motion discuss global battery trends and the impact on cobalt markets on Tuesday 19 July 2022.

COB - Change of Director's Interest Notice - J Kaderavek

COB - Application for quotation of securities

COB - Cleansing Notice

COB: BHCP Analyst Site Visit 21 June 2022 - Presentation

Cobalt Blue hosted a site visit at the Broken Hill Cobalt Project that provided an update on the progress of the Demonstration Plant. Our guests were provided with a tour of the crushing and concentrator circuits and had the opportunity to walk ~80m into the underground decline. They were also guided through our processing plant and sulphate lab.

Demonstration Plant - Ore Extraction Underway, Commissioning Continues

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Application for quotation of securities

COB - Cleansing Notice

COB advances Demonstration Plant Commissioning

COB Webinar Presentation

Webinar Presentation - Quarterly COB Business Update and BHCP Project Update hosted on Thursday 12 May 2022

COB - Application for quotation of securities

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Cleansing Notice

Broken Hill Cobalt Project Awarded $15m Critical Minerals Accelerator Initiative (CMAI) Grant

The Australian Government has awarded Cobalt Blue Holdings Limited (ASX:COB) $15m through the CMAI for the Broken Hill Cobalt Project (BHCP).

COB - Quarterly Activities/Appendix 5B Cash Flow Report

COB - Application for quotation of securities

COB - Application for quotation of securities

COB - Cleansing Notice

COB - Change of Director's Interest Notice

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Cleansing Notice

COB commences underground development to support Demonstration Plant

Successful site establishment and first blast completed at Pyrite Hill. Demonstration Plant construction and commissioning underway.

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Half Year Accounts - December 2021

COB - Application for quotation of securities

COB - Cleansing Notice

Grant of Australian Major Project Status

Cobalt Blue Holdings Limited (ASX: COB) has been granted Major Project Status for the Broken Hill Cobalt Project (BHCP) by the Australian Government.

COB - Cleansing Notice

COB - Application for quotation of securities

COB - Application for quotation of securities

COB - Cleansing Notice

COB - Change of Directors' Interest Notice

COB - Quarterly Activities/Appendix 5B Cash Flow Report

COB - Application for quotation of securities - COB

COB - Cleansing Notice

COB - Chairman's Letter to Shareholders

2021 Review and the year ahead.

Webinar - Quarterly COB Business Update and BHCP Project Update.

You are invited to join a live online webinar with CEO Joe Kaderavek and Executive Manager Dr Andrew Tong

COB - Conversion of Options Cleansing Notice

COB - Application for quotation of securities

COB Notification regarding unquoted securities

COB Notification regarding unquoted securities

COB Notification regarding unquoted securities

COB Notification regarding unquoted securities

COB Notification of cessation of securities

COB Application for quotation of securities

COB Application for quotation of securities

COB Application for quotation of securities

COB Change of Directors' interests

COB Cleansing Statement

COB Notification regarding unquoted securities

COB executes Memorandum of Understanding (‘MOU’) with State of Queensland

COB has executed a MOU with the State of Queensland, acting through the Department of Resources, to assess opportunities for the recovery of cobalt (and any coexisting base and precious metals) from mine waste.

COB NSW Government Critical Minerals & High-Tech Metals Strategy

The Deputy Premier and Resources Minister launched the NSW Critical Minerals and High-Tech Metals Strategy on Monday 29th November 2021.

COB Application for quotation of securities

COB Cleansing Notice

COB 2021 Company Presentation

COB Chairman and CEO Address to Shareholders

COB Results of 2021 Annual General Meeting

COB - Change of Director's Interest Notice - Robert Biancardi

Pilot Plant successfully produces cobalt sulphate samples

Broken Hill Cobalt Project (BHCP) Pilot Plant cobalt sulphate initial production completed. Cobalt sulphate partners to receive first samples in early November.

Cobalt Blue participation in Cathode Precursor Production Pilot Plant

BHCP cobalt sulphate will be used in the upcoming A$18m FBI-CRC cathode precursor pilot plant in 2022.

COB September 2021 Quarterly Report

Notice of 2021 Annual General Meeting/Proxy Form

COB Expands Broken Hill Tenure

Cobalt Blue Holdings Limited (ASX: COB) is pleased to announce the grant of Exploration Licence (‘EL’) 9254 has increased the Company’s Broken Hill footprint by some 35%.

COB 2021 Annual Report

COB Appendix 4G & Corporate Governance Statement

CEO Investor Webinar

Cobalt Industry Responsible Assessment Framework (CIRAF)

BHCP Resource Update

Premium cobalt samples finalised

Premium Mixed Hydroxide Product (MHP) {typically 35–41% cobalt and 3–10% nickel content} produced

Top 20 security holders

Cobalt Blue Holdings Limited (ASX: COB) (Company) is pleased to provide the following listing of the 20 largest holders of ordinary shares of the Company.

Application for quotation of securities - COB

Cleansing Notice

Results of General Meeting

COB Change to General Meeting Procedures

June 2021 Quarterly Activities Report

Appendix 3Y - Joe Kaderavek

COB Notification of cessation of securities

Transition to Demonstration Plant

Broken Hill Cobalt Project (BHCP) – sample program underway (concludes early Q3). Transition of activities to Demonstration Plant beginning.

Appendix 3Y - Joe Kaderavek

Change of Director’s Interest Notice

Notice of General Meeting & Proxy Form

COB Notification regarding unquoted securities

Notification regarding unquoted securities - COB

COB Proposed issue of securities

Trading Halt

Honeywell Cooperation Partnership

Honeywell brings global reach and solutions to COB’s technical needs. Data quality is essential to attract investment/commercial partners and the implementation of advanced data gathering, and analysis systems will assist the BHCP in this partnering process.

Pilot Plant – Open Days

COB Expands Broken Hill Footprint

Progress Report

COB announces the successful installation and commissioning of its Broken Hill based Pilot Plant. Production of concentrate has been operating at nameplate 2 – 3 tonnes per day since the start of May.

Strategic Financial Advisor Appointed

The appointment of Cutfield Freeman and the commencement of this Strategic Financial Advisory mandate represents another major step forward in the development of COB’s Broken Hill Cobalt Project (BHCP).

Cobalt in Waste Streams Project

Cobalt Blue Holdings Limited (ASX:COB) is delighted to announce its Cobalt in Waste Streams Project, a rollout of its existing technology and test facilities to examine cobalt recovery from waste streams.

Pilot Trial - Commissioning underway

Appendix 2A - issue of shares

Pilot Trial – Calcine testwork underway

Pilot Trial scale treatment of pyrite concentrate commenced. Calcine product to be processed for cobalt recovery in COB’s Pilot Plant at Broken Hill.

BHCP Tenement Expansion

COB Change of Company Secretary

Top 20 Shareholders

January 2021

Appendix 2A - issue of shares

COB December 2021 Quarterly Activities & Cash Flow Reports

ARR – Investment in Cobalt Blue Holdings Limited

COB Chairman's Letter to Shareholders

Response to ASX Price Query

Pilot Plant – Progress Update

Major items of equipment have arrived at our Broken Hill plant site, with remaining items due in early January 2021.

CEO's letter to Shareholders

Pilot Plant Progress

Pilot Plant Update – 2nd Delivery of Major Equipment Received

Major items of equipment continue to arrive at our Broken Hill plant site. COB has taken delivery of a 2nd tranche of Pilot Plant equipment – including reactors, tanks, filters, pumps and spirals.

Broken Hill Cobalt Project (BHCP) Update 2020

BHCP testwork – High purity cobalt and sulphur products

COB produces 20.8% cobalt sulphate suitable for lithium ion battery market and 99% grade sulphur.

Mixed Hydroxide Product (MHP) testwork delivers premium product.

Significant testwork outcome – strong hydroxide results ~37% cobalt and ~7% nickel content with low impurities = a premium product.

Pilot Plant Update

COB has committed to build a metallurgical testing centre in Broken Hill. This will include a Demonstration Plant for testing COB minerals processing technology to produce cobalt sulphate from pyrite samples sourced from the Broken Hill Cobalt Project.

Concentrate Circuit (Pilot Trial) program successfully completed

Completed previously announced pilot-scale production of concentrate from 45 t (wet basis) of ore.

Significant Thackaringa Resource Upgrade

Pilot Plant Update – Critical Equipment Received

COB has taken delivery of critical Pilot Plant equipment – including both leaching circuit and specialist filter equipment. The equipment has arrived in the Port of Adelaide ready for transport and site installation at Broken Hill.

Testwork Update

Positive Large Scale Testwork Results

Thackaringa Pre-Feasibility Study Announcement

Archive

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