Largo Inc. announced it has identified significant platinum group metals (?PGMs?) grades in its non-magnetic tailings ponds and ilmenite stockpile from ongoing exploration work at its Maracás Menchen Mine, including a total of 28 vertical auger drill holes and 83 samples. The Company has also initiated a review of its past geology and assay database to establish the existence of PGMs in deposits surrounding its Campbell Pit. Non-Magnetic Tailings Pond Auger Drill Hole Highlights: BN3TR15: 3.0 metres grading 0.410g Pt/t and 0.209g Pd/t and 0.07g Au/t totalling 0.687g PGM equivalent (?PGM eq.?).

BN2TR1: 4.3 metres grading 0.321g Pt/t and 0.118g Pd/t and 0.04g Au/t totalling 0.480g PGM eq. There are three non-magnetic tailings ponds at the Maracás Menchen Mine. Pond four is active but has not been sampled as it is still under operation and receiving non-magnetic material from ongoing operations.

The current tonnage of pond four is approximately 3.0 million tonnes as of December 31, 2023. Further analysis has also identified gold grades, which has been added to the ongoing analysis. Past exploration work was conducted on the Company?s Gulçari A Norte (?GAN?), São José (?SJO?), Novo Amparo (?NAO?), and Novo Amparo Norte (?NAN?) targets, (collectively, the ?Northern District?) in 2006, 2008, 2011, 2012 and 2014 and 2018.

These exploration efforts demonstrated various grades of PGMs, however, further studies to explore PGMs was discontinued as the Company focused solely on advancing its vanadium operations. Highlighted PGMs Results from Past Exploration Work: FGA23 ? 9.0 metres grading 0.860g Pt/t and 0.410g Pd/t. FGA43 ?

9.0 metres grading 0.108g Pt/t and 0.005g Pd/t. FGA25 ? 9.0 metres grading 0.740g Pt/t and 0.110g Pd/t. The Auger sample developed in 2023 was logged and photographed by the Largo Vanádio Maracás S.A. team. The sample preparation and analytical work was conducted at the SGS facility in Belo Horizonte, which is ISO 9001 certified laboratory.

All sample results during the period have been monitored through a QA/QC program that includes the insertion of certified standards, blanks, and pulp and reject duplicate samples developed by SGS. The sampling, logging, custody of samples and QAQC routines were validated by Emerson Ricardo Re during the site visit developed in December 2023. The QAQC program conducted during past exploration work conducted utilized industry and market practices that include certified standards, blanks, rejects and pulp samples.