Holding(s) in Company

Senior PLC

02 October 2026

 

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB0007958233

Issuer Name

SENIOR PLC

UK or Non-UK Issuer

UK

2. Reason for Notification

An acquisition or disposal of voting rights; An acquisition or disposal of financial instruments

3. Details of person subject to the notification obligation

Name

JPMorgan Chase & Co.

City of registered office (if applicable)

Country of registered office (if applicable)

US

4. Details of the shareholder

Name	City of registered office	Country of registered office
J.P. Morgan Securities PLC

5. Date on which the threshold was crossed or reached

30-Sep-2026

6. Date on which Issuer notified

02-Oct-2026

7. Total positions of person(s) subject to the notification obligation

.	% of voting rights attached to shares (total of 8.A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer
Resulting situation on the date on which threshold was crossed or reached	4.956370	3.019372	7.975742	33451704
Position of previous notification (if applicable)	2.263885	5.864518	8.128403

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached

8A. Voting rights attached to shares

Class/Type of shares ISIN code(if possible)	Number of direct voting rights (DTR5.1)	Number of indirect voting rights (DTR5.2.1)	% of direct voting rights (DTR5.1)	% of indirect voting rights (DTR5.2.1)
GB0007958233		20787914		4.956370
Sub Total 8.A	20787914		4.956370%

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument	Expiration date	Exercise/conversion period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights
Sub Total 8.B1

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument	Expiration date	Exercise/conversion period	Physical or cash settlement	Number of voting rights	% of voting rights
Cash-settled Equity Swap	15/10/2026	15/10/2026	Cash	22342	0.005327
Cash-settled Equity Swap	30/11/2026	30/11/2026	Cash	14429	0.003440
Cash-settled Equity Swap	05/05/2027	05/05/2027	Cash	32748	0.007808
Cash-settled Equity Swap	02/07/2027	02/07/2027	Cash	42279	0.010080
Cash-settled Equity Swap	02/09/2027	02/09/2027	Cash	81311	0.019387
Cash-settled Equity Swap	17/09/2027	17/09/2027	Cash	32232	0.007685
Cash-settled Equity Swap	04/10/2027	04/10/2027	Cash	15083	0.003596
Cash-settled Equity Swap	30/05/2028	30/05/2028	Cash	2404	0.000573
Cash-settled Equity Swap	22/09/2027	22/09/2027	Cash	1294758	0.308703
Cash-settled Equity Swap	02/11/2027	02/11/2027	Cash	17115	0.004081
Cash-settled Equity Swap	23/08/2027	23/08/2027	Cash	1908401	0.455012
Cash-settled Equity Swap	27/01/2027	27/01/2027	Cash	5346376	1.274713
Cash-settled Equity Swap	29/01/2027	29/01/2027	Cash	3854312	0.918967
Sub Total 8.B2				12663790	3.019372%

9. Information in relation to the person subject to the notification obligation

2. Full chain 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 entities (please add additional rows as necessary)

Ultimate controlling person	Name of controlled undertaking	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
JPMorgan Chase & Co.	J.P. Morgan Securities PLC	4.686496	3.019372	7.705868%
JPMorgan Chase & Co.	J.P. Morgan Markets Limited
JPMorgan Chase & Co.	J.P. Morgan SE
JPMorgan Chase & Co.	J.P. Morgan Securities LLC

10. In case of proxy voting

Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

If date does not apply, explain below

11. Additional Information

Chain of controlled undertakings:

JPMorgan Chase & Co.
JPMorgan Chase Bank, National Association (100%)
J.P. Morgan International Finance Limited (100%)
J.P. Morgan Capital Holdings Limited (100%)
J.P. Morgan Securities PLC (100%)

JPMorgan Chase & Co.
JPMorgan Chase Bank, National Association (100%)
J.P. Morgan International Finance Limited (100%)
J.P. Morgan SE (100%)

JPMorgan Chase & Co.
JPMorgan Chase Holdings LLC (100%)
J.P. Morgan Broker-Dealer Holdings Inc. (100%)
J.P. Morgan Securities LLC (100%)

JPMorgan Chase & Co.
JPMorgan Chase Holdings LLC (100%)
J.P. Morgan Financial Investments Limited (100%)
J.P. Morgan Markets Limited (100%)

12. Date of Completion

02-Oct-2026

13. Place Of Completion

London

 

END