TR-1: Notification of Major Holdings-Efstathios Topouzoglou

TR-1: Standard form for notification of major holdings

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

1a. Identity of the issuer or the underlying issuer			ENERGEAN PLC
of existing shares to which voting rights are at-
tached ii:						GB00BG12Y042
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 disposal of voting rights							X
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				Trustena GmbH
City and country of registered office (if applicable)		Zurich, Switzerland
4. Full name of shareholder(s) (if different from 3.) v
Name				Efstathios Topouzoglou
City and country of registered office (if applicable)
5. Date on which the threshold was crossed or		19/05/2023
reached vi:
6. Date on which issuer notified (DD/MM/YYYY):		19/05/2023
7. Total positions of person(s) subject to the notification obligation
	% of voting rights at-	% of voting rights			Total number of
	through financial instru-		Total of both in %	voting rights held
	tached to shares (to-
		ments		(8.A + 8.B)	in issuer (8.A +
	tal of 8. A)
	(total of 8.B 1 + 8.B 2)			8.B) vii
Resulting situation
on the date on which	9.06%						9.06%
threshold was
crossed or reached
Position of 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 voting rights ix	% of voting rights
shares
Direct		Indirect	Direct		Indirect
ISIN code (if possible)
(DTR5.1)		(DTR5.2.1)	(DTR5.1)		(DTR5.2.1)
GB00BG12Y042			16,228,599			9.06%
SUBTOTAL 8. A		16,228,599		9.06%

B 1: Financial Instruments according to DTR5.3.1R (1) (a)

Type of financial instrument

Expiration	Exercise/
date x	Conversion Period xi

Number of voting rights that may be acquired if the instrument is exercised/converted.

% of voting rights

SUBTOTAL 8. B 1

B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b)

Type of financial	Expiration
instrument	date x

Exercise/ Conversion Period xi

Physical or cash Settlement xii

Number of voting rights

% of voting rights

SUBTOTAL 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

Fullchain of 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	X
(please add additional rows as necessary) xiv

	% of voting rights if it	% of voting rights	Total of both if it
	through financial in-
	equals or is higher	equals or is higher
Name xv	struments if it equals
than the notifiable	than the notifiable
	or is higher than the
	threshold	threshold
	notifiable threshold
Chain 1
Efstathios Topouzoglou
Trustena GmbH as trus-
tee to the family trust	9.06%		9.06%
"The Energy Trust"
OilCo Investments
Limited
Chain 2
Efstathios Topouzoglou
H.I.L. Hydrocarbon
Investments Limited

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

Place of completion	Zurich, Switzerland
Date of completion	19/05/2023