IDH.L Regulatory News (IDH)

For filings with the FSA include the annex For filings with issuer exclude the annex

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

Immunodiagnostic Systems Holdings Plc

GB00B01YZ052

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

Frankfurter Investmentgesellschaft mit variablem Kapital

(SICAV)

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

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

1st October 2017

6. Date on which issuer notified:

2nd October 2017

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

Crossing above 8%

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

VotingRights

Number of shares

Number of voting rights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B01YZ052

0

0

2.419.648

2.419.648

8,23

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

N/A

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

N/A

Nominal

Delta

Number of voting rights

Percentage of voting rights

2.419.648

8,23

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

Frankfurter Investmentgesellschaft mit variablem Kapital (SICAV) holds these shares as legal representative for one of their unit trusts.

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:

Frankfurter Investmentgesellschaft mit variablem Kapital

(SICAV)

14. Contact name:

Christian Tietze

15. Contact telephone number:

+352 / 76 94 94 - 538