Aptitude Regulatory News (APTD)

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

(ii) DR 3.1.4(R)(1)(b) a disclosure made in accordance with section 324 (as extended by section 328) of the Companies Act 1985; or

(iii) both (i) and (ii)

MICROGEN PLC

(i)

3.

Name of person discharging managerial responsibilities/director

4.

State whether notification relates to a person connected with a person discharging managerial responsibilities/director named in 3 and identify the connected person

RALPH KANTER

22,000 SHARES ACQUIRED BY THE WIFE OF RALPH KANTER, PATRICIA BARBARA KANTER

5.

Indicate whether the notification is in respect of a holding of the person referred to in 3 or 4 above or in respect of a non-beneficial interest

6.

Description of shares (including class), debentures or derivatives or financial instruments relating to shares

SEE 3 AND 4 ABOVE

ORDINARY SHARES OF 5P EACH

7.

Name of registered shareholders(s) and, if more than one, the number of shares held by each of them

8

State the nature of the transaction

RALPH KANTER 237,305 SHARES

PATRICIA BARBARA KANTER 53,900 SHARES

ACQUISITION OF SHARES

9.

Number of shares, debentures or financial instruments relating to shares acquired

10.

Percentage of issued class acquired (treasury shares of that class should not be taken into account when calculating percentage)

44,000 SHARES

0.05%

11.

Number of shares, debentures or financial instruments relating to shares disposed

12.

Percentage of issued class disposed (treasury shares of that class should not be taken into account when calculating percentage)

N/A

N/A

13.

Price per share or value of transaction

14.

Date and place of transaction

0.85 PENCE PER SHARE

26 APRIL 2010, UK

15.

Total holding following notification and total percentage holding following notification (any treasury shares should not be taken into account when calculating percentage)

16.

Date issuer informed of transaction

291,205 SHARES 0.34%

26 APRIL 2010

17

Date of grant

18.

Period during which or date on which it can be exercised

N/A

N/A

19.

Total amount paid (if any) for grant of the option

20.

Description of shares or debentures involved (class and number)

N/A

N/A

21.

Exercise price (if fixed at time of grant) or indication that price is to be fixed at the time of exercise

22.

Total number of shares or debentures over which options held following notification

N/A

N/A

23.

Any additional information

24.

Name of contact and telephone number for queries

INFORMATION IS BASED ON THE COMPANY'S CURRENT ISSUED SHARE CAPITAL WHICH IS 86,897,277

ANJUM SIDDIQI, COMPANY SECRETARY, MICROGEN PLC - 01252 772 326

Name and signature of duly authorised officer of issuer responsible for making notification

ANJUM SIDDIQI

Date of notification: 27 APRIL 2010

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