Holding(s) in Company

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

Rotork 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

Fiera Capital Corporation

4. Full name of shareholder(s)

(if different from 3.): iv

PORTFOLIO HOLDINGS

BNPP IP BELGIUM - G.A. FUND 231 756

193 NBC EUROPEAN EQUITY FUND  204 187

CR BNC FONDS PRINCIPAL US 543 124

COAST CONSERVATION ENDOW 23 514

FIERA INTERNATIONAL EQUITY  4 229 230

867 ACTIONS MONDIALES BNC  285 499

FONDS DE PLACEMENT DU 263 707

FIERA CAP GLOBAL EQUITY FUND 176 234

FONDS FIERA ACTIONS 2 505 256

CHICAGO LABORERS' AND 136 773

MICROSOFT RUSSELL   1 578 150

RUSSELL INVESTMENT 2 447 248

RIC IV PLC RUSSELL ALPHA 11 024

RIL STICHTING 137 380

RIL ALGEMEEN PENSIOENFONDS 16 169

RIC V RUSSELL GSEO FUND 14 763

RUSSELL WORLD EQUITY FUND 124 726

RUSSELL (RCCF AND RIC) 972 687

HUNTINGTON INGALLS 462 657

FIERA GLOBAL EQUITY FUND 2 050 943

FONDS FIERA SCEPTRE 241 809

FIERA CAPITAL INTERNATIONAL 75 865

TENNESSEE CONSOLIDATED 6 008 774

AON HEWITT CIT-FIERA 854 100

MARSHFIELD CLINIC SALARY 118 215

CAISSE DE RETRAITE 2 170 887

FIDUCIE GLOBALE DU R.B.A. 46 933

LONDON LIFE BALANCED FUND 24 399

CAISSE PRIVE 2 070 625

GOLDMAN SACHS NON-US EQUITY 1 030 462

GOLDMAN SACHS NON-US EQUITY 216 333

GOLDMAN SACHS NON-US EQUITY 524 675

FIERA GLOBAL EQUITY FUND 236 641

INTERNATIONAL EQUITY 1 746 207

GLOBAL EQUITY LONG-ONLY 1 083 633

FIERA ASSET MANAGEMENT USA 5 043 936

LORTRON HOLDING CORPORATION 102 000

Total 38 010 521

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

May 22, 2017

6. Date on which issuer notified:

May 26, 2017

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

reached: vi, vii

Crossed 4%

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

0.5p ordinary

Shares

GB00BVFNZH21

33,452,977

38,010,521

4.37%

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

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

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 38,010,521

4.37%

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

Fiera Capital Corporation, a duly registered portfolio manager in all the provinces and territories of Canada, acts as investment adviser and has investment discretion and/or control for all the shareholders listed in box 4 above.

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:

 N/A

14. Contact name:

 Stephen R Jones, Company Secretary

15. Contact telephone number:

01225 733331