Director/PDMR Shareholding

Glanbia PLC
01 December 2005


                                  GLANBIA plc


NOTIFICATION OF TRANSACTIONS OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL
RESPONSIBILITY OR CONNECTED PERSONS

This form is intended for use by an issuer to make a RIS notification required
by DR 3.1.4R(1).

(1)     An issuer making a notification in respect of a transaction relating to
the shares or debentures of the issuer should complete boxes 1 to 16, 23 and 24.
(2)     An issuer making a notification in respect of a derivative relating to
the shares of the issuer should complete boxes 1 to 4, 6, 8, 13, 14, 16, 23 and
24.
(3)     An issuer making a notification in respect of options granted to a
director/person discharging managerial responsibilities of the issuer should
complete boxes 1 to 3 and 17 to 24.
(4)     An issuer making a notification in respect of a financial instrument
relating to the shares of the issuer (other than a debenture) should complete
boxes 1 to 4, 6, 8, 9, 11, 13, 14, 16, 23 and 24.

Please complete all relevant boxes in block capital letters.

 1.  Name of the issuer                      2.  State whether the notification
                                                 relates to (i) a transaction
                                                 notified in accordance with DR
                                                 3.1.4R(1)(a); or
     GLANBIA plc                                 (ii) DR 3.1.4(R)(1)(b) a
                                                 disclosure made in accordance
                                                 with Section 53 of the
                                                 Companies Act, 1990 (as
                                                 amended); or
                                                 (iii) both (i) and (ii)

                                                 (i)

 3.  Name of person discharging managerial   4.  State whether notification
     responsibilities/director                   relates to a person connected
                                                 with a person discharging
                                                 managerial responsibilities/
                                                 director named in 3 and
                                                 identify the connected person
     BRIAN PHELAN                                NOT APPLICABLE

 5.  Indicate whether the notification is    6.  Description of shares
     in respect of a holding of the person       (including class), debentures
     referred to in 3 or 4 above or in           or derivatives or financial
     respect of a non-beneficial interest        instruments relating to
                                                 shares
     NOTIFICATION IS IN RESPECT OF A             ORDINARY SHARES OF €0.06 EACH
     HOLDING OF BRIAN PHELAN

 7.  Name of registered shareholder(s) and,  8.  State the nature of the
     if more than one, the number of shares      transaction
     held by each of them

     DAVYCREST NOMINEES LIMITED <0106583>        EXERCISE OF TOTAL OPTION
                                                 ENTITLEMENT PURSUANT TO THE
                                                 GLANBIA plc IRISH EMPLOYEE
                                                 SAVINGS RELATED SHARE OPTION
                                                 SCHEME

 9.  Number of shares or financial          10.  Percentage of issued class
     instruments relating to shares              acquired (treasury shares of
     acquired                                    that class should not be taken
                                                 into account when calculating
                                                 percentage)
                                    3,625        NOT MATERIAL, LESS THAN 0.1%

11.  Number of shares or financial          12.  Percentage of issued class
     instruments relating to shares              disposed (treasury shares of
     disposed                                    that class should not be taken
                                                 into account when calculating
                                                 percentage)

     NOT APPLICABLE                              NOT APPLICABLE

13.  Price per share or value of            14.  Date and place of transaction
     transaction
     €1.20 PER SHARE                             1 DECEMBER, 2005
                                                 BY CORRESPONDENCE TO BARCLAYS
                                                 BANK

15.  Total holding following notification   16.  Date issuer informed of
     and total percentage holding following      transaction
     notification (any treasury shares
     should not be taken into account when
     calculating percentage)
     TOTAL HOLDING/INTERESTS                     1 DECEMBER, 2005

     FOLLOWING NOTIFICATION:

     3,625 ORDINARY SHARES OF €0.06 EACH

     100,000 OPTIONS UNDER 2002 LONG TERM
     INCENTIVE PLAN, AT AN EXERCISE OF
     €2.47 PER SHARE
     75,000 OPTIONS UNDER 2002 LONG TERM
     INCENTIVE PLAN, AT AN EXERCISE OF
     €2.725 PER SHARE
     ADDITIONALLY, AS A PARTICIPANT OF THE
     2002 LONG TERM INCENTIVE PLAN (€2.725
     PER SHARE), B. PHELAN IS ELIGIBLE FOR
     A SHARE AWARD OF 10% OF THE ORDINARY
     SHARES THAT HE CONTINUES TO HOLD
     FOLLOWING THE SECOND ANNIVERSARY OF
     THE EXERCISE OF THE SHARE OPTION.
     PERCENTAGE HOLDING:

     NOT MATERIAL, LESS THAN 0. 1%

If a person discharging managerial responsibilities has been granted options by
the issuer complete the following boxes

17.  Date of grant                          18.  Period during which or date on
                                                 which it can be exercised
19.  Total amount paid (if any) for the     20.  Description of shares or
     grant of the option                         debentures involved (class and
                                                 number)
21.  Exercise price (if fixed at time of    22.  Total number of shares or
     grant) or indication that price is to       debentures over which options
     be fixed at the time of the exercise        held following notification
23.  Any additional information             24.  Name of contact and telephone
                                                 number for queries
                                                 JOHN ROCHE
                                                 + 353 56 7772212

Name and signature of duly authorised officer of issuer responsible for making
notification
MICHAEL HORAN
Date of Notification: 1 December, 2005




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