Anglesey Mining Plc – Holding(s) in Company

TR-1: Standard form for notification of major holdings

NOTIFICATION OF
MAJOR HOLDINGS
(to
be sent to the
relevant issuer
and
to the FCA in
Microsoft Word
format
if possible) i

1a. Identity of Anglesey Mining PLC
the issuer or the
underlying issuer
of existing
shares
to which voting
rights are
attached
ii:
1b. Please
indicate if the
issuer is
a non-UK issuer
(please mark with
an
«X» if
appropriate)
Non-UK issuer
2. Reason for the
notification
(please mark the
appropriate box
or
boxes with an
«X»)
An acquisition or x
disposal of
voting
rights
An acquisition or
disposal of
financial
instruments
An event changing
the breakdown of
voting rights
Other (please
specify) iii:
3. Details of
person subject to
the
notification
obligation iv
Name YA II PN LTD
City and country An exempted company
of registered incorporated in the
office (if Cayman Islands with
applicable) limited liability,
whose principal office
is at 1012 Springfield
Avenue, Mountainside,
NJ 07092 USA
4. Full name of
shareholder(s)
(if
different from
3.) v
Name
City and country
of registered
office (if
applicable)
5. Date on which 13 March 2026
the threshold was
crossed or
reached vi:
6. Date on which 25 March 2026
issuer notified
(DD/MM/YYYY):
7. Total
positions of
person(s)
subject to the
notification
obligation

% of voting % of voting Total of both Total
rights rights in % (8.A + number of
attached to through 8.B) voting
shares financial rights
(total instruments held in
of 8. A) (total of issuer
8.B 1 + 8.B (8.A +
2) 8.B) vii
Resulting 6.43% 0.00 6.43% 4,166,666
situation on the
date on
which threshold
was crossed or
reached
Position of 0% 0.00 0%
previous
notification
(if

applicable)

8. Notified
details of the
resulting
situation on
the date on
which the
threshold was
crossed or
reached viii
A: Voting
rights
attached to
shares
Class/type of Number of % of
shares voting voting
rights ix rights
ISIN code (if
possible)
Direct Indirect Direct Indirect

(DTR5.1) (DTR5.2.1) (DTR5.1) (DTR5.2.1)
Ordinary 4,166,666 0 6.43% 0
Shares

ISIN:
GB00BRYPS729

SUBTOTAL 8. A 4,166,666 6.43%

B 1: Financial
Instruments
according to
DTR5.3.1R (1)
(a)
Type of Expiration Exercise/ Number of %
of
financial date x Conversion voting
voting
instrument Period xi rights
rights
that may
be
acquired
if the
instrument
is

exercised/c
onverted.

SUBTOTAL 0
0.00
8. B 1

B 2: Financial
Instruments
with similar
economic
effect
according to
DTR5.3.1R (1)
(b)
Type of Expiration Exercise/ Physical Number of voting %
of
financial date x Conversion or cash rights
voting
instrument Period xi
rights
Settlement
xii

SUBTOTAL 0
0.00
8.B.2

9. Information
in
relation to
the person
subject to the
notification
obligation
(please mark
the

applicable box
with an
«X»)
Person subject
to the
notification
obligation
is not
controlled by
any
natural person
or legal
entity and
does not
control any
other
undertaking(s)
holding
directly or
indirectly an
interest in
the
(underlying)
issuer xiii
Full chain of x
controlled
undertakings
through
which the
voting rights
and/or the
financial
instruments
are
effectively
held starting
with the
ultimate
controlling
natural
person or
legal entity
(please add
additional
rows as
necessary) xiv
Name xv % of voting rights if it equals or is % of voting Total of
higher than the notifiable threshold rights both if it
through equals or
financial is higher
instruments than the
if it notifiable
equals or threshold
is higher
than the
notifiable
threshold
Yorkville 6.43% 6.43% 6.43%
Advisors
Global
II, LLC
(General
Partner)
Yorkville 6.43% 6.43% 6.43%
Advisors
Global, LP
(Investment
Manager)
YA II PN, Ltd 6.43% 6.43% 6.43%

10. In case of
proxy
voting, please
identify:
Name of the
proxy holder
The number and
% of
voting rights
held
The date until
which the
voting rights
will be
held

11. Additional
information
xvi
Yorkville
Advisors
Global, LP is
the
Investment
Manager of YA
II PN Ltd and
exercises
voting rights
on behalf
of YA II PN
Ltd.
Yorkville
Advisors
Global
II, LLC
controls
Yorkville
Advisors
Global, LP in
its
capacity as
General
Partner.

+——————-+———————-+
|Place of completion|London, United Kingdom|
+——————-+———————-+
|Date of completion |25 March 2026 |
+——————-+———————-+

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