Howden Joinery Regulatory News (HWDN)

TR-1: Notifications of Major Interests in Shares

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

Howden Joinery Group PLC

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

Yes

An acquisition or disposal of 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 notification obligation:

Ameriprise Financial, Inc. and its group

4. Full name of shareholder(s) (if different from 3):

Nortrust Nominees Ltd

Vidacos Nominees Ltd

HSBC Global Custody Nominee (UK) Ltd

State Street Nominees Ltd

Bank Lombard Odier & Co Ltd

BNP Paribas Nominees Pty Ltd

Securities Services Nominees Ltd

State Street Bank & Trust Boston

The Bank of New York (Nominees) Ltd

Chase Nominees Ltd

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

10th May 2017

6. Date on which issuer notified:

12th May 2017

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

Below the threshold of 5%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use 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

Percentage of voting rights

Direct

Direct

Indirect

Direct

Indirect

GB0005576813

32,022,189

32,022,189

306,950

306,950

31,051,936

0.048%

4.933%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period

No. of voting rights that may be acquired if the instrument is exercised/converted.

Percentage of voting rights

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

Resulting situation after the triggering transaction

Type of financial instrument

Exercise Price

Expiration date

Exercise / conversion period

No. of voting rights instrument refers to

Percentage of voting rights

Nominal

Delta

Equity Swap

110,586

0.018%

Total (A+B+C)

Number of voting rights

Percentage of voting rights

31,469,472

4.999%

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

Columbia Management Investment Advisers, LLC (0.319%)

Threadneedle Asset Management Limited (4.680%)

Columbia Management Investment Advisers, LLC Is wholly owned by Ameriprise Financial, Inc.

Threadneedle Asset Management Limited is wholly owned by TC Financing Limited, which is itself wholly owned by Threadneedle Asset Management Holdings Limited, which is itself wholly owned by TAM UK Holdings Limited, which is itself wholly owned by Threadneedle Holdings Limited, which is itself wholly owned by Threadneedle Asset Management Holdings SARL, which is itself wholly owned by Ameriprise International Holdings GmbH, which is itself wholly owned by Ameriprise Financial, Inc.

Proxy Voting:

10. Name of 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:

The Shares referred to in section 9 of this form are held in portfolios and funds managed on a discretionary basis by the entities set out in section 9.

Please note that the Shares are held through certain nominee companies.

14 Contact name:

Mark Powney, Threadneedle Asset Management Ltd.

15. Contact telephone name:

+44 (0) 1793 363 135