ASTRON LIMITED — Major Shareholding Notification 2012

Jun 3, 2012

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Manager of Company Announcements ASX Limited Level 6 20 Bridge Street SYDNEY NSW 2000

4 June 2012

By e-lodgement

TOP 20 SHAREHOLDERS AND DISTRIBUTION SCHEDULE FOR ASTRON CORPORATION LIMITED (ASX:ATR)

Attached is a list of the top 20 CDI holders in Astron Corporation Limited and a schedule of the distribution of CDIs by number of securities held in Astron Corporation Limited on 21 May 2012 immediately following the allotment of the securities on that day.

Contact

For further information please contact:

Mark Nielsen

Chief Financial Officer Astron Corporation Limited T +61 2 9375 2361 F +61 2 9375 212

CER/COMPUTERSHARE INVESTOR SERVICES PTY LTD  ***      T O P     2 0     H O L D E R S       ***                (RSP520:14.05:040612)
  ASTRON CORPORATION LIMITED/ATR                      RUN NUMBER 2711       21/05/2012           A.C.N. 000 285 272    PAGE :      1
  CLASS: CDI/CHESS DEPOSITORY INTERESTS
  HOLDER NO     NAME AND ADDRESS                                           UNITS       % I/C      RANK
                FIRBACK FINANCE LIMITED                                  55,732,592    45.50         1
                P T ARAFUA MINING LIMITED                                32,361,944    26.42         2
                FSC INVESTMENT HOLDINGS LTD                               7,437,092     6.07         3
                JUHUA INTERNATIONAL LIMITED                               4,000,000     3.27         4
                GCC ASSET HOLDINGS PTY LTD                                2,584,500     2.11         5
                COMBINED OIL & GAS PTY LTD                                2,000,000     1.63         6
                QUERION PTY LTD                                           1,826,816     1.49         7
                QUERION PTY LTD                                           1,400,000     1.14         8
                MR DARRELL VAUGHAN MANTON &                                 933,364     0.76         9
                MRS VERONICA JOSEPHINE MANTON
                <THE MANTON FAMILY NO 2 A/C>
                MR DONALD ALEXANDER BLACK                                   702,028     0.57        10
                FYLPANE PTY LTD                                             600,000     0.49        11
                <TOGNOLA SUPER FUND A/C>
                MR ADRIAN ROBERT NIJMAN &                                   480,200     0.39        12
                MRS JENNY ANN NIJMAN
                NITCO PTY LIMITED                                           416,608     0.34        13
                COGNITION AUSTRALIA PTY LTD                                 381,468     0.31        14
                <A&M GALL SUPERANNUATION A/C>
                NAVIGATOR AUSTRALIA LTD                                     376,120     0.31        15
                <MLC INVESTMENT SETT A/C>
                3RD PULITANO INCORPORATION PTY                              328,744     0.27        16
                LTD
                <GIUSEPPE PULITANO FAMILY A/C>

                BRESRIM PTY LTD                                             328,342     0.27        17
                <D A HANNES SUPER FUND #2 A/C>
                GOLDMAN SACHS AUSTRALIA PTY                                 313,164     0.26        18
                LTD
                <405V A/C>
                DFC MANAGEMENT PTY LTD                                      300,000     0.24        19
                <CARMICHAEL SUPERFUND A/C>
                MAX SHORT PTY LTD                                           289,260     0.24        20
               <GL SHORT FAMILY A/C>
                ***  REPORT  TOTAL  ***                                 112,792,242    92.09
                ***    REMAINDER   ***                                    9,684,836     7.91
                                                                     -----------------------
                ***  GRAND  TOTAL  ***                                  122,477,078   100.00
                                                                     =======================

CER/COMPUTERSHARE INVESTOR SERVICES PTY LTD  ***           Range Of Units Summary           ***                (RSP510:14.06:040612)
  ASTRON CORPORATION LIMITED/ATR                      RUN NUMBER 2711       21/05/2012           A.C.N. 000 285 272    PAGE :      1
                       1        1001        5001       10001      100001                                       * TOTAL *
                      to          to          to          to          to
                    1000        5000       10000      100000       (MAX)
CDI                /CHESS DEPOSITORY INTERESTS
   Holders
      Issuer          65          50          19          39          10                                             183
      Chess           63         117          51         136          29                                             396
      Total          128         167          70         175          39                                             579
   Units
      Issuer       36474      157128      149436     1087506   104321252                                       105751796
      Chess        26228      326036      390948     4591294    11390776                                        16725282
      Total        62702      483164      540384     5678800   115712028                                       122477078
TOTAL HOLDERS FOR CLASSES SELECTED                                                         579
TOTAL UNITS    "    "         "                                                      122477078
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