Twenty Seven : Assays support shallow gold mineralisation at Rover, WA

ASX: TSC

ASX ANNOUNCEMENT

22 April 2022

Further assays support shallow gold mineralisation at Rover Gold Project, WA

HIGHLIGHTS:

• • 1m splits from 4m composite gold assays returned and confirm shallow gold mineralisation

• • A total of 42 of the 141 1m samples submitted1 returned >0.1ppm Au

• • Highlights include:

  • o 1m @ 1.94g/t Au from 135m (21RVRC002)

  • o 1m @ 1.21g/t Au from 77m (21RVRC001)

  • o 6m @ 0.40g/t Au from 30m within a much larger interval of 31m @ 0.22g/t

    Au from 21m (21RVRC006)

• • RC drilling completed in December 2021 targeted the Harmonic, Four Corners and Blue Hills Prospects and comprised 31 holes for a total of 2,161m

• • Multi element assay results are still pending due to the backlog at the lab and results are expected in the coming weeks

Twenty Seven Co. Limited (ASX: TSC) ("TSC" or "the Company") is pleased to advise that is has received the 1m assay results from the Reverse Circulation ("RC") drilling programme completed at the Rover Gold Project in December 2021. Initial 4m gold composites results were reported to the ASX on the 4th February 2022.

Importantly, the new detailed 1m results from this drilling campaign have further highlighted the mineralised potential of the Rover Project area, and in particular at the Harmonic Prospect.

Commenting on the receipt of the 1m splits, Non-Exec Chairman Rohan Dalziell said:

"We are pleased with the latest batch of assays received from Rover as they continue to support our aim of extending the existing gold system at Harmonic and Creasy to further increase the overall prospectivity of the Rover Project. We are continuing to build our understanding of the mineralised system at Rover and the confirmation of further shallow gold mineralisation is encouraging as we plan our future work programmes in the area. We look forward to providing further updates in due course."

Twenty Seven Co. Limited | ABN 48 119 978 013 ASX: TSC

Suite 17, 145 Stirling Hwy, Nedlands WA 6009 | 08 9385 6911

E:[e-mail]| W:www.twentysevenco.com.au

Figure 1: Rover Gold Project relative to Greenstone belts and selected peer operations

Harmonic Prospect: 1m splits of 3m Composites

All of the 1m splits sample assays have been returned from the lab for RC drilling completed over the Harmonic, Four Corners and Blue Hills Prospects in December 2021. Pleasingly, the 1m splits include a zone of mineralisation with grades up to 1m @ 1.94g/t Au in hole 21RVRC002 and a broader interval of 6m @ 0.40g/t Au in hole 21RVRC006.

The mineralisation intersected at Harmonic drilling shows good continuity along strike and down dip of the previous holes drilled by TSC in 2019 and 2020 2 and 3, which highlights the strong mineralised potential at Harmonic and across the broader Rover Project area.

Near-Term Exploration Plans:

The following work programmes are currently underway and/or planned for TSC's WA and NSW tenement portfolios:

• ▪ Yarbu Gold Project: Analyse pending assay results from auger drilling and identify areas of mineralisation/ anomalism for follow-up exploration and drilling activity.

• ▪ NSW portfolio: Undertake soil and rock chip sampling programme over the northern end of Perseus, southern end of Trident and eastern side of Midas.

• ▪ Mt Dimer Gold and Silver Project: All options currently being assessed by TSC.

• ▪ Rover Gold Project: Awaiting final multi element results before refining next phase of exploration.

Figure 2: Prospect map with 6 holes around Harmonic and 25 holes at Blue Hills and Four Corners

References

• 1. ASX: TSC: 4 February 2021, Rover drilling results update

• 2. ASX: TSC: 23 December 2019, High-grade shallow gold discovery at Rover Project

• 3. ASX: TSC: 21 October 2020, Gold from surface intersected at Harmonic

The Board of Twenty Seven Co. Limited authorised the release of this announcement to the ASX.

For further information please contact:

Rohan Dalziell

Non-executive Chairman

Phone: [phone] Mobile: + 61 407 994 507

Email:[e-mail]

Competent Person's Statement

The information in this report relates to historical mineral exploration results and is based on work reviewed and compiled by Mr. Stephen F Pearson, a Competent Person and Member of the Australasian Institute of Mining and Metallurgy and the Australian Institute of Geoscientists. Mr Pearson is a beneficiary of a trust which is shareholder of TSC. Mr. Pearson is a Senior Geologist for GEKO-Co Pty Ltd and contracted to the Company as Exploration Manager and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity that he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr. Pearson consents to the inclusion in this report of the information in the form and context in which it appears. The Australian Securities Exchange has not reviewed and does not accept responsibility for the accuracy or adequacy of this release. Cautionary Statement - Historical exploration results reported in this announcement are based on data reported in historical reports rather than data that has been produced by Twenty Seven Co. Limited; - Historical exploration results have not been reported in accordance with the JORC Code 2012; - A Competent Person has not done sufficient work to disclose the historical exploration work in accordance with JORC 2012; - It is possible that following further evaluation and/or exploration work that the confidence in the historical exploration results may be reduced when reported under JORC Code 2012; - Nothing has come to the attention of the acquirer that causes it to question the accuracy or reliability of the former owners' historical exploration results, but - The acquirer has not independently validated the former owners' historical exploration results and therefore is not to be regarded as reporting, adopting or endorsing those historical results.

About Twenty Seven Co. Limited

Twenty Seven Co. Limited (ASX: TSC) is an ASX-listed explorer. TSC's Australian assets comprise two tenure groupings detailed briefly as follows:

WA Archaean Gold assets:

• - Mt Dimer Project: is made up of mining lease M77/515 and exploration license E77/2383. The project is highly prospective for Archean gold.

• - Yarbu Project: This project is located on the Marda Greenstone belt ~ 80km to the northwest of the Mt Dimer Project. Yarbu consists of three exploration licenses (E77/2442, E77/2540 and E77/2539) which cover approximately 223sq km and are highly prospective for Archean gold deposits.

• - Rover Project: TSC's 100% owned Rover project is located near Sandstone in a base metals and gold mineral rich area associated with Archean greenstone belts. Rover Project is a large 460sqkm tenure package covering two linear Archean greenstones, with a combined length of around 160km. Historically the area is underexplored and is currently undergoing a resurgence in exploration.

NSW Iron Oxide-Copper-Gold and Tin assets:

• - Midas Project: is prospective for iron oxide copper gold (IOCG) and is located 40km NE of Broken Hill.

• - Perseus Project: is prospective for iron oxide copper gold (IOCG) and historically has been underexplored and is located ~50km west of Broken Hill.

• - Trident Project: is prospective for iron oxide copper gold (IOCG) and Tin and is located ~35km north-east of Broken Hill