Holding(s) in Company

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

Regenersis PLC

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

An acquisition or disposal of voting rights

Yes

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

No

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

No

An event changing the breakdown of voting rights

No

Other (please specify):

No

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

IMPAX ASSET MANAGEMENT LIMITED

4. Full name of shareholder(s)

(if different from 3.): iv

IMPAX ENVIRONMENTAL MARKETS PLC,

 IMPAX ENVIRONMENTAL MARKETS IRELAND

IMPAX GLOBAL RESOURCE OPTIMIZATION FUND.

LGS FUND

PARVEST ENVIROMENTAL OPPORTUNITES FUND,

THE ENVIRONMENT AGENCY FUND

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

07/04/2014

6. Date on which issuer notified:

09/04/2014

7. Threshold(s) that is/are crossed or

reached: vi, vii

7%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B06GNN57 LN

3,047,998

3,047,998

3,896,175

N/A

3,896,175

N/A

7.8266%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/ConversionPeriod xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

 NIL

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate xvii

Exercise/Conversionperiod xviii

Number of votingrights instrumentrefers to

% of voting rights xix, xx

NIL

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 3,896,175

7.8266%

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

IMPAX ENVIRONMENTAL MARKETS PLC, (1,802,284 SHARES 3.62%)

MPAX ENVIRONMENTAL MARKETS IRELAND. (498,734 SHARES 1%)

IMPAX GLOBAL RESOURCE OPTIMIZATION FUND. (49,840 SHARES 0.1%)

LGS FUND (169,536 SHARES 0.34%)

PARVEST ENVIROMENTAL OPPORTUNITES FUND, (503,231 SHARES 1.01%)

THE ENVIRONMENT AGENCY FUND (329,000 SHARES 0.66%)

FCP TERRA MUNDA (545,570 SHARES 1.01%)

Proxy Voting:

10. Name of the proxy holder:

 N/A

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

 N/A

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

 N/A

13. Additional information:

 Based on 49,781,503 issued ordinary shares

 14. Contact name:

 Annika Norman - Head of Compliance

15. Contact telephone number:

 + 44 (0) 20 7432 2626