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Mendell Helium plc

MDH · AIM · Chemicals · mcap £13m today

All announcements

All RNS · 54 Key events · 43

02 Oct 26

Holding(s) in Company
RNS 9804971 ↗
30 Sep 26

Final Results

Final results for the year ended 31 March 2026
RNS 9800023 ↗
23 Sep 26

Rost 2-26 recent gas sample records 11.5% helium

Rost 2-26 most recent gas sample records 11.5% helium
RNS 9785649 ↗
14 Sep 26

Fort Dodge Operations Update

Rost 2-26 preliminary gas analysis indicates over 10% helium
RNS 9769099 ↗
01 Sep 26

Holding(s) in Company
RNS 9747221 ↗
26 Aug 26

Exercise of Convertible Loan Notes

Mendell Helium (LON: MDH), the helium production company with operations in Kansas, announces that it has received notice to exercise convertible loan notes ("Conversion") over 9,799,999 new ordinary shares at an exercise price of 3 pence per share ("New...
RNS 9739856 ↗
24 Aug 26

Issue of Equity, TVR & Director Dealing
RNS 9735255 ↗
18 Aug 26

Holding(s) in Company
RNS 9728223 ↗
12 Aug 26

Holding(s) in Company
RNS 9716748 ↗
10 Aug 26

Holding(s) in Company
RNS 9711917 ↗
05 Aug 26

Rost 1-26, Rost 2-26 and Brobee Operations Update

Rost 1-26, Rost 2-26 and Brobee Operations Update
RNS 9704868 ↗
28 Jul 26

Warrant Extension, Director Shareholding & RPT

Mendell Helium (LON: MDH) provides the following update on certain of its outstanding warrants.
RNS 9689943 ↗
27 Jul 26

Settlement Agreement & Issue of Equity

Mendell Helium (LON: MDH) announces that further to disclosures made in the Company's admission document dated 11 June 2026, the Company has entered into a settlement agreement (the "Agreement") with a former broker to the Company.
RNS 9687624 ↗
02 Jul 26

Exercise of warrants

Mendell Helium (LON: MDH) announces that it has received notice to exercise warrants over 625,000 new ordinary shares at an exercise price of 4 pence per share, generating cash proceeds for the Company of £25,000.
RNS 9650225 ↗
30 Jun 26

Operations update

Mendell Helium, the helium production company with operations in Kansas, is pleased to provide an update on the Company's operations in Fort Dodge, Kansas.
RNS 9642987 ↗
16 Jun 26

Admission to AIM & First Day of Dealings

Admission to Trading on AIM and First Day of Dealings
RNS 9619653 ↗
12 Jun 26

Release of Updated AIM Schedule One

Mendell Helium, the helium production company with operations in Kansas, notes the release of an updated Schedule One by the London Stock Exchange in respect of its proposed admission to trading on AIM ("Admission").
RNS 9615489 ↗
12 Jun 26

Schedule One Update - Mendell Helium PLC

COMPANY REGISTERED OFFICE ADDRESS AND IF DIFFERENT, COMPANY TRADING ADDRESS (INCLUDING POSTCODES):
RNS 9615474 ↗
01 Jun 26

Release of AIM Schedule One

Mendell Helium, the helium production company with operations in Kansas, announces the release of a Schedule One by the London Stock Exchange in respect of its proposed admission to trading on AIM ("Admission").
RNS 9594098 ↗
01 Jun 26

Schedule One - Mendell Helium PLC

COMPANY REGISTERED OFFICE ADDRESS AND IF DIFFERENT, COMPANY TRADING ADDRESS (INCLUDING POSTCODES):
RNS 9594077 ↗
26 May 26

Issue of Equity, TVR & Director Dealing
RNS 9585810 ↗
26 May 26

Operations update

Mendell Helium, the helium production company with operations in Kansas, is pleased to provide an update on the Company's operations in Fort Dodge, Kansas.
RNS 9583928 ↗
18 May 26

Result of GM & Completion of Acquisition

The General Meeting of the Shareholders of Mendell Helium was held today at 10.00 a.m.
RNS 9573416 ↗
12 May 26

Further leases secured in Fort Dodge

Mendell Helium is pleased to announce that M3 Helium Corp.
RNS 9562927 ↗
05 May 26

Correction to Circular

Mendell Helium announces a minor correction to the circular and notice of general meeting posted to shareholders on 1 May 2026.
RNS 9553288 ↗
05 May 26

Publication of Circular & Notice of GM
RNS 9550771 ↗
30 Apr 26

Placing and subscription to raise £5 million

Proposed completion of acquisition of M3 Helium Corp.
RNS 9545342 ↗
24 Apr 26

Exercise of warrants

Mendell Helium announces that it has received notice to exercise warrants over 750,000 new ordinary shares at an exercise price of 3 pence per share and 125,000 new ordinary shares at an exercise price of 6 pence per share, generating cash proceeds for the...
RNS 9537134 ↗
22 Apr 26

Jumbo tube trailer secured & Exercise of warrants

Mendell Helium is pleased to announce that M3 Helium Corporation ("M3 Helium") has agreed terms for the lease of a 265 Mcf capacity trailer for delivery of helium from its Rost 1-26 well ("Rost") and the nearby Rost twin well ("Rost Twin") where drilling...
RNS 9532582 ↗
20 Apr 26

Exercise of warrants

Mendell Helium announces that it has received notice to exercise warrants over 625,000 new ordinary shares at an exercise price of 4 pence per share, generating cash proceeds for the Company of £25,000.
RNS 9526996 ↗
17 Apr 26

Proposal to install helium production facility

Proposal to install 1,000 Mcf/day helium production facility at Rost
RNS 9524849 ↗
16 Apr 26

Update on drilling the Rost twin well

Mendell Helium is pleased to announce the successful conclusion of drilling operations at M3 Helium Corporation's ("M3 Helium") new twin well to the existing Rost 1-26 well ("Rost") in Fort Dodge, Kansas.
RNS 9522538 ↗
10 Apr 26

Exercise of warrants

Mendell Helium announces that it has received notice to exercise warrants over 1,000,000 new ordinary shares, comprising 500,000 new ordinary shares at an exercise price of 4 pence per share and 500,000 new ordinary shares at an exercise price of 3 pence...
RNS 9515160 ↗
08 Apr 26

Exercise of warrants

Mendell Helium announces that the Company has received notice to exercise warrants over 250,000 new ordinary shares at an exercise price of 4 pence generating cash proceeds for the Company of £10,000.
RNS 9509186 ↗
01 Apr 26

Update on drilling the Rost twin & move to AIM

Mendell Helium is pleased to announce an update on M3 Helium Corporation's ("M3 Helium") ongoing drilling of the new twin well to the existing Rost 1-26 well ("Rost") in Fort Dodge, Kansas.
RNS 9501907 ↗
25 Mar 26

Agreement with Ritchie Exploration

Agreement with Ritchie Exploration to recomplete Schneweis well
RNS 9490340 ↗
12 Mar 26

Update on new production wells at Fort Dodge

Update on new production wells at Fort Dodge
RNS 9470347 ↗
02 Mar 26

Operations update & Update on move to AIM

Update on move to AIM and Option Extension
RNS 9452313 ↗
27 Jan 26

Placing to raise £700,000 to fund production well

Placing to raise £700,000 to fund second Rost production well
RNS 9388085 ↗
20 Jan 26

Issue of Equity, Conversion of CLNs & PDMR Dealing
RNS 9367690 ↗
30 Dec 25

Conversion of CLNs

Mendell Helium announces that the Company has received notice to convert a total face value of £10,000 convertible loan notes (the "CLNs") resulting in the issue of 350,000 new ordinary shares in the Company (the "New Ordinary Shares") ("Conversion").
RNS 9323510 ↗
22 Dec 25

Half-year Results

Unaudited Interim Results for the six months ended 30 September 2025
RNS 9311363 ↗
15 Dec 25

Updated flow rate on Rost 1-26 well

Mendell Helium is pleased to announce an updated flow rate for M3 Helium Corporation's ("M3 Helium") Rost 1-26 well ("Rost") in Fort Dodge, Kansas.
RNS 9295774 ↗
09 Dec 25

Further re Broker Option, CLN & Joint Broker

Mendell Helium announces that, further to its announcement of 17 November 2025, the Company is pleased to announce that it has raised, through the Subscription and an unsecured convertible loan note facility ("CLN") with certain high net worth investors,...
RNS 9283773 ↗
04 Dec 25

Extension of Broker Option & Subscription

Mendell Helium announces that, further to its announcement of 17 November 2025 regarding the Subscription, Issue of Equity and Warrants (the "November Subscription Announcement"), it has received expressions of interest from investors to participate in the...
RNS 9274766 ↗
01 Dec 25

Update on Fort Dodge & Kansas Option Extension

Update on development of Fort Dodge region, Kansas
RNS 9266098 ↗
25 Nov 25

Broker Option Extension & Additional Subscription PUSU deadline

Mendell Helium announces that, further to its announcement of 17 November 2025 regarding the Subscription, Issue of Equity and Warrants (the "November Subscription Announcement"), it has received a further subscription for new ordinary shares on the same...
RNS 9254634 ↗
17 Nov 25

Subscription, Issue of Equity and Warrants

Mendell Helium announces that it has raised approximately £200,000 by way of a subscription ("Subscription") through the issue of 6,682,320 new ordinary shares of 1 pence each in the Company ("Ordinary Shares") at an issue price of 3 pence per new Ordinary Share.
RNS 9236763 ↗
10 Nov 25

Director/PDMR Shareholding Director buys

Mendell Helium announces that Nick Tulloch, Chief Executive Officer, has acquired an aggregate of 8,683,117 warrants ("Warrants") in the Company.
RNS 9223436 ↗
10 Nov 25

Helium Production commences at Rost

Mendell Helium is pleased to announce that production of helium has commenced at M3 Helium Corporation's ("M3 Helium") Rost 1-26 well in Fort Dodge, Kansas ("Rost").
RNS 9222251 ↗
30 Oct 25

Result of AGM
RNS 9204350 ↗
22 Oct 25

Issue of Equity, Total Voting Rights &PDMR dealing
RNS 9186664 ↗
22 Oct 25

Rost Helium Production & Nebraska Update

Mendell Helium is pleased to provide an update on forthcoming production at M3 Helium Corporation's ("M3 Helium") Rost 1-26 well in Fort Dodge, Kansas ("Rost") and the Jasper well in Nebraska.
RNS 9185863 ↗
13 Oct 25

Operations Update

Mendell Helium is pleased to provide an update on M3 Helium Corporation's ("M3 Helium") Rost 1-26 well in Fort Dodge, Kansas ("Rost") and the Jasper well in Nebraska.
RNS 9166025 ↗

Source: Investegate RNS archive. Quotes are short extracts. Not investment advice.