Notification of major interest in shares

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: ii

ConvaTec Group PLC

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to the notification obligation: iii

OrbiMed Advisors LLC and OrbiMed Capital LLC

4. Full name of shareholder(s)

(if different from 3.):iv

OrbiMed Partners Master Fund Limited OrbiMed Partners II, L.P.

OrbiMed Global Healthcare Master Fund, L.P.

Stichting Depositary APG Developed Markets Equity Pool Worldwide Healthcare Trust PLC

5. Date of the transaction and date on which the threshold is crossed or reached: v

October 26, 2016

6. Date on which issuer notified:

October 27, 2019

7. Threshold(s) that is/are crossed or reached: vi, vii

Greater than 3% ownership

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights x

Direct

Direct xi

Indire ct xii

Direct

Indirect

GB00BD3VFW73

0

0

23,000,000

23,000,000

0

3.49%

0

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date xiii

Exercise/ Conversion Period xiv

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

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

xv, xvi

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date xvii

Exercise/ Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

23,000,000

3.49%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

OrbiMed Advisors LLC and OrbiMed Capital LLC (together, "OrbiMed") are affiliated investment advisers registered with the U.S. Securities and Exchange Commission.

OrbiMed acts as investment manager or investment adviser for the funds and accounts listed in Item 4, which beneficially own the shares that are the subject of this

notification.

14. Contact name:

Douglas Coon

15. Contact telephone number:

1-212-739-6400