REG - Pulsar Helium Inc. - Helium-3 Discovery at Jetstream#1, Topaz Project

Pulsar HeliumAnnouncement

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RNS Number : 5009B  Pulsar Helium Inc.  01 October 2025

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NEWS RELEASE | OCTOBER 1, 2025 | CASCAIS, PORTUGAL

PULSAR HELIUM ANNOUNCES HELIUM-3 DISCOVERY AT JETSTREAM #1, TOPAZ PROJECT,
MINNESOTA

Pulsar Helium Inc. (AIM: PLSR, TSXV: PLSR, OTCQB: PSRHF) ("Pulsar" or the
"Company"), a leading helium project development company, is pleased to
announce a landmark discovery of helium-3 at its Topaz Project in Minnesota.
Laboratory results from the Jetstream #1 well have revealed sustained helium-3
concentrations up to 14.5 parts per billion (ppb) in produced gas. This level
of helium-3 places Topaz amongst the highest accumulation of naturally
occurring helium-3 ever publicly reported in a terrestrial gas reservoir
worldwide. As previously reported (Pulsar News Release September 19, 2025) the
Jetstream #1 well also had a sustained flow containing 7-8% helium-4 (the more
common isotope of helium), confirming that Topaz's helium is not only
high-grade in helium-4 but also highly enriched in the rare helium-3 isotope.

Helium-3: Value and Strategic Significance

Helium-3 is one of the rarest and most valuable isotopes on Earth, with
reported prices of up to US$18.7 million per kilogram, more than 100,000 times
the price of common helium (helium-4). Against this backdrop, discovering a
terrestrial source with sustained helium-3 content at up to 14.5% ppb is an
extraordinary development.

NASA and the U.S. Government are actively funding lunar helium-3 extraction,
with regolith concentrations estimated between 1.4 and 15 ppb, averaging
around 4 ppb. Grants and early purchase agreements are supporting technologies
for regolith heating, gas separation, and transport, reflecting helium-3's
strategic importance. In this context, the significance of Pulsar's discovery
is clear, with terrestrial helium-3 levels now comparable to, and potentially
exceeding, average concentrations found on the Moon, without the need for
lunar excavation.

Highlights

•             Exceptionally High: Laboratory analysis of gas
samples from the Jetstream #1 well at the Topaz Project (Minnesota) shows
sustained helium-3 concentrations ranging from 1.3 to 14.5 ppb, amongst the
highest naturally occurring helium-3 levels publicly reported in a terrestrial
reservoir.

•             Consistent Isotopic Signature: The ³He / ⁴He
isotopic ratio in Jetstream #1 gas is consistently about 0.09 Rₐ across all
samples measured in multiple labs. This steady isotopic signature indicates a
single, stable helium gas source throughout the reservoir.

•             Pulsar Results vs. Peers: Pulsar's helium-3
discovery vastly exceeds any previously reported by other helium explorers.
For example, a recent discovery by an industry peer in Australia encountered
helium-3 only in the sub-ppb range (with a low isotopic 3He / 4He ratio
characteristic of crustal helium), underscoring the world-class significance
of Topaz's results. Jetstream #1's helium-3 concentration now amongst the
highest publicly disclosed in any land-based gas reservoir worldwide.

•             Strategic and Commercial Value: Helium-3 is
exceedingly rare and valuable, commanding ~US$2,500 per liter in specialized
markets. This discovery establishes a potential new terrestrial supply of this
isotope.

•             Critical Applications: Helium-3's unique
properties make it crucial for cutting-edge technologies. It is sought after
as a fuel for future fusion energy reactors, for enabling quantum computing
and advanced cryogenics (ultra-low temperature cooling), and for
high-efficiency neutron detection devices used in nuclear security and
research.

Thomas Abraham-James, President & CEO of Pulsar, commented:

"We are thrilled to announce this remarkable helium-3 discovery, a result that
firmly places Pulsar Helium on the map as a pioneer in the field. To encounter
helium-3 concentrations of this magnitude at our Topaz Project in Minnesota is
nothing short of extraordinary. This achievement not only validates the
exceptional nature of the Topaz Project but also underscores the strategic
importance of our exploration efforts. Helium-3 is a game-changer isotope with
tremendous scientific and commercial value. The fact that we have discovered
such high levels in the USA, when helium-3 is so scarce globally, is testament
to the world-class potential of Topaz. Meanwhile, the next-richest naturally
occurring source of helium-3 is arguably the surface of the Moon which has
attracted interest from NASA and the U.S. Department of Energy - we believe
that Minnesota will be a more reliable and economically viable option. This
discovery positions Pulsar at the forefront of the helium industry not just as
a supplier of conventional helium (helium-4), but potentially as a supplier of
helium-3. It's a development of significance not only for our Company and
shareholders, but also for the broader scientific and energy communities. We
look forward to advancing this project and unlocking its full value in a
responsible and impactful way."

Helium-3 Analytical Results

The analytical data indicate a consistent ³He / ⁴He isotopic ratio of
approximately 0.09 Rₐ across all tested intervals of Jetstream #1. The ³He
/ ⁴He ratio is stable regardless of helium-4 concentration (i.e. from gas
containing ~1% helium-4 up to the richest sample of 11.4% helium-4),
suggesting a single, homogeneous source of helium charging the reservoir,
rather than sporadic pockets or contamination. Notably, one sample containing
11.4% helium-4 by volume yielded approximately 14.5 ppb of helium-3,
consistent with the overall isotopic trend. This uniform enrichment of
helium-3, relative to helium-4, is a strong indicator of the unique genesis
and high quality of the Topaz helium source, setting it apart from typical
helium accumulations which often contain only trace helium-3.

Helium-3 analyses were conducted by Smart Gas Sciences LLC (Smart Gas) in Ohio
and independently verified at Woods Hole Oceanographic Institution (WHOI) in
Massachusetts - accredited by the New England Commission of Higher Education.

At Smart Gas, helium isotopes were measured by first purifying gas samples on
a high-vacuum line, where reactive species are removed with getters and
cryogenic traps ensuring only helium reaches the detector apparatus. The
purified helium is then analyzed on a Thermo Helix SFT static-vacuum noble-gas
mass spectrometer, which simultaneously collects 3He and 4He at high
resolution, eliminating interferences such as HD⁺. Results are calibrated
against air standards and reported both as absolute 3He / 4He ratios and in
R/Rₐ units (relative to the atmospheric reference ratio).

At WHOI, samples were measured for helium concentrations and isotope ratios on
a Nu Instruments multi-collector Noblesse mass spectrometer, which was used to
determine the isotope ratios of all 23 stable noble gases. Due to the
resolving power of the instrument, 3He was resolved from HD+, eliminating any
mass interference during the helium measurement. The instrument is interfaced
to an automated noble gas processing and purification inlet system, which
allows for full separation and purification of the various noble gas species
using cryogenic separation prior to inlet into the mass spectrometer. Results
were normalized to a series of high He standards in order to optimize accuracy
of 3He / 4He and helium concentrations. Helium data are reported both as
absolute helium concentrations and 3He / 4He values in R/Rₐ format (relative
to air).

Other Known Natural Helium-3 Occurrences

From a global perspective, the highest 3He / 4He values on record have been
observed not in conventional gas reservoirs, but volcanic geological settings,
for example, in mid-ocean ridge hydrothermal vent systems such as the East
Pacific Rise, and in volcanic hotspots like Hawaii's Loihi Seamount. These
environments have produced anomalously high 3He / 4He (more than an order of
magnitude above air levels), but they are coupled with relatively low absolute
helium abundances, making them poor targets to commercially exploit.

A recent helium find by a peer company in Australia showed helium-3 in trace
amounts (well below 1 ppb, with a low isotopic ratio indicative of purely
radiogenic helium). In stark contrast, Topaz's results are more than an order
of magnitude greater in helium-3 content, pointing to a geologically distinct
helium source with a higher inherent ³He / ⁴He ratio. This leap in helium-3
concentration marks not only a scientific milestone but also carries
significant economic and strategic implications for Pulsar Helium and the
industry as a whole.

What is Helium-3?

Helium-3 is one of the rarest and most valuable substances on the planet. In
Earth's atmosphere, helium-3 exists at only about 7 parts per trillion, and
historically it has been obtainable mainly as a by-product from nuclear
facilities (via tritium decay) or in minute quantities from certain natural
gas fields. At current market rates, helium-3 commands ~US$2,500 per liter
(~US$18.7 million per kilogram) due to its scarcity and utility. The
exorbitant value (on the order of 100,000 times the price of common helium-4)
reflects the critical applications of helium-3 in advanced technology and
research.

The isotope's ability to absorb neutrons makes it indispensable for neutron
detectors used in nuclear security and scientific instrumentation. Its low
boiling point and unique quantum properties enable ultra-low-temperature
cooling systems (utilized in quantum computing and fundamental physics
experiments). Moreover, helium-3 is a promising fuel for nuclear fusion
reactions, when combined with deuterium, helium-3 could produce energy with
virtually no radioactive waste, a long-term goal of fusion energy programs.

As spacefaring nations look to the Moon's helium-3 reserves, Pulsar's
terrestrial discovery is positioned to be both scientifically significant and
strategically relevant. Helium-3 sits at the intersection of homeland
security, energy security, and technological leadership, with control over
supply carrying important geopolitical implications.

As an exceptionally scarce keystone resource, helium-3 has the potential to
influence future international power dynamics and underpin next-generation
technologies. Pulsar's discovery also creates scope for potential strategic
partnerships and commercial applications across sectors ranging from clean
energy to national security.

Helium-3 Separation

At present, there is no commercial technology in operation that separates
helium-3 from helium-4 in a gas stream at scale. Pulsar is in active dialogue
with potential collaborators and looks forward to formalizing partnerships to
evaluate methods for helium-3 separation in future processing scenarios, with
the aim of producing helium-3 as a pure product. The Company invites interest
from research groups and technology developers keen to collaborate or trial
their separation techniques at Topaz and actively encourages open dialogue and
outreach.

About the Topaz Project

The Topaz project is located in northern Minnesota, USA, where Pulsar is the
first mover and holds exclusive leases. Drilling at the Jetstream #1 appraisal
well reached a total depth ("TD") of 5,100 feet (1,555 meters) in January
2025, successfully penetrating the entire interpreted helium-bearing reservoir
and beyond. Drilling of the Jetstream #2 appraisal well was completed on
February 1, 2025, reaching a TD of 5,638 feet (1,718 meters). In August 2025,
the Jetstream #1 well was successfully flow-tested using a wellhead
compressor, delivering a peak gas flow rate of approximately 1.3 million cubic
feet per day with a sustained flow of 7-8% helium (as helium-4). Meanwhile, a
multi-well drilling campaign at Topaz is set to commence in early October 2025
to expand the Company's understanding of the helium reservoir and advance
Pulsar's strategy to become a leading helium producer in response to growing
global demand.

On behalf Pulsar Helium Inc.

"Thomas Abraham-James"

President, CEO and Director

Further Information:

Pulsar Helium Inc.

connect@pulsarhelium.com (mailto:connect@pulsarhelium.com)

+ 1 (218) 203-5301 (USA/Canada)

+44 (0) 2033 55 9889 (United Kingdom)

https://pulsarhelium.com (https://pulsarhelium.com)

https://ca.linkedin.com/company/pulsar-helium-inc
(https://ca.linkedin.com/company/pulsar-helium-inc) .

Yellow Jersey PR Limited

(Financial PR)

Charles Goodwin / Annabelle Wills

+44 777 5194 357

pulsarhelium@yellowjerseypr.com (mailto:pulsarhelium@yellowjerseypr.com)

Strand Hanson Limited

(Nominated & Financial Adviser, and Joint Broker)

Ritchie Balmer / Rob Patrick / Richard Johnson

+44 (0) 207 409 3494

OAK Securities*

(Joint Broker)

Richard McGlashan / Mungo Sheehan

+44 7879 646641 / +44 7788 266844

richard.mcglashan@oak-securities.com
(mailto:richard.mcglashan@oak-securities.com) /
mungo.sheehan@oak-securities.com (mailto:mungo.sheehan@oak-securities.com)

*OAK Securities is the trading name of Merlin Partners LLP, a firm
incorporated in the United Kingdom and regulated by the UK Financial Conduct
Authority.

About Pulsar Helium Inc.

Pulsar Helium Inc. is a publicly traded company quoted on the AIM market of
the London Stock Exchange and listed on the TSX Venture Exchange with the
ticker PLSR, as well as on the OTCQB with the ticker PSRHF. Pulsar's portfolio
consists of its flagship Topaz helium project in Minnesota, USA, and the Tunu
helium project in Greenland. Pulsar is the first mover in both locations with
primary helium occurrences not associated with the production of hydrocarbons
identified at each.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that
term is defined in the policies of the TSX Venture Exchange) accepts
responsibility for the adequacy or accuracy of this release.

Qualied Person Signoff

In accordance with the AIM Note for Mining and Oil and Gas Companies, the
Company discloses that Thomas Abraham-James, President, CEO and Director of
the Company has reviewed the technical information contained herein. Mr.
Abraham-James has approximately 20 years in the mineral exploration industry,
is a Chartered Professional Fellow of the Australasian Institute of Mining and
Metallurgy (FAusIMM CP (Geo)), a Fellow of the Society of Economic Geologists
and a Fellow of the Geological Society of London.

Forward-Looking Statements

This news release contains forward-looking information within the meaning of
Canadian securities legislation (collectively, "forward-looking statements")
that relate to the Company's current expectations and views of future events.
Any statements that express, or involve discussions as to, expectations,
beliefs, plans, objectives, assumptions or future events or performance
(often, but not always, through the use of words or phrases such as "will
likely result", "are expected to", "expects", "will continue", "is
anticipated", "anticipates", "believes", "estimated", "intends", "plans",
"forecast", "projection", "strategy", "objective" and "outlook") are not
historical facts and may be forward-looking statements. Forward-looking
statements herein include, but are not limited to, statements relating to the
statements regarding bringing the Topaz project to production, anticipated
full plant construction contract in 2026, final investment decision being made
in 2026, the potential impact of the drill results, flow testing and pressure
testing on the next iteration of the resource estimate; the potential of CO2
as a valuable by-product of the Company's future helium production; and the
potential for future wells. Forward-looking statements may involve estimates
and are based upon assumptions made by management of the Company, including,
but not limited to, the Company's capital cost estimates, management's
expectations regarding the availability of capital to fund the Company's
future capital and operating requirements and the ability to obtain all
requisite regulatory approvals.

No reserves have been assigned in connection with the Company's property
interests to date, given their early stage of development. The future value of
the Company is therefore dependent on the success or otherwise of its
activities, which are principally directed toward the future exploration,
appraisal and development of its assets, and potential acquisition of property
interests in the future. Un-risked Contingent and Prospective Helium Volumes
have been defined at the Topaz Project. However, estimating helium volumes is
subject to significant uncertainties associated with technical data and the
interpretation of that data, future commodity prices, and development and
operating costs. There can be no guarantee that the Company will successfully
convert its helium volume to reserves and produce that estimated volume.
Estimates may alter significantly or become more uncertain when new
information becomes available due to for example, additional drilling or
production tests over the life of field. As estimates change, development and
production plans may also vary. Downward revision of helium volume estimates
may adversely affect the Company's operational or financial performance.

Helium volume estimates are expressions of judgement based on knowledge,
experience and industry practice. These estimates are imprecise and depend to
some extent on interpretations, which may ultimately prove to be inaccurate
and require adjustment or, even if valid when originally calculated, may alter
significantly when new information or techniques become available. As further
information becomes available through additional drilling and analysis the
estimates are likely to change. Any adjustments to volume could affect the
Company's exploration and development plans which may, in turn, affect the
Company's performance. The process of estimating helium resources is complex
and requires significant decisions and assumptions to be made in evaluating
the reliability of available geological, geophysical, engineering, and
economic date for each property. Different engineers may make different
estimates of resources, cash flows, or other variables based on the same
available data.

Forward-looking statements are subject to a number of risks and uncertainties,
many of which are beyond the Company's control, which could cause actual
results and events to differ materially from those that are disclosed in or
implied by such forward- looking statements. Such risks and uncertainties
include, but are not limited to, that Pulsar may be unsuccessful in drilling
commercially productive wells; the uncertainty of resource estimation;
operational risks in conducting exploration, including that drill costs may be
higher than estimates ; commodity prices; health, safety and environmental
factors; and other factors set forth above as well as risk factors included in
the Company's Annual Information Form dated July 31, 2025 for the year ended
September 30, 2024 found under Company's profile on www.sedarplus.ca
(http://www.sedarplus.ca) .

Forward-looking statements contained in this news release are as of the date
of this news release, and the Company undertakes no obligation to update or
revise any forward-looking statements, whether as a result of new information,
future events or otherwise, except as may be required by law. New factors
emerge from time to time, and it is not possible for the Company to predict
all of them or assess the impact of each such factor or the extent to which
any factor, or combination of factors, may cause results to differ materially
from those contained in any forward-looking statement. No assurance can be
given that the forward-looking statements herein will prove to be correct and,
accordingly, investors should not place undue reliance on forward-looking
statements. Any forward-looking statements contained in this news release are
expressly qualified in their entirety by this cautionary statement.

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