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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   FORM 13F

                              FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: 09/30/2012

Check here if Amendment [_] Amendment Number:
This Amendment          [_] is a restatement

Institutional Investment Manager Filing this Report:

Name:    HORIZON BANCORP
Address: 515 FRANKLIN ST
         MICHIGAN CITY, IN 46360

13F File Number: 28-6479

The institutional investment Manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:  Mark E. Secor
Title: Chief Financial Officer
Phone: 219-873-2611

Signature, Place, and Date of Signing:
/s/ Mark E. Secor,   Chief Financial Officer,  Michigan City, IN
1        10/05/2012

Report Type (Check only one)
    [X] 13F HOLDINGS REPORT
    [_] 13F COMBINATION REPORT

================================================================================



                          FORM 13F INFORMATION TABLE



                                                     SHS                             VOTING AUTHORITY
NAME OF ISSUER         TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   -----------------
SECURITY NAME           CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
-------------------- ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ -----
                                                                
AFLAC INC            COMMON STOCK 001055102   193    4027  SH       SOLE              722
                                                                    SOLE                          3305
                                              146    3045  SH       DEFINED          1257
                                                                    DEFINED                       1788
                                               16     328  SH       OTHER             328
AT&T INC             COMMON STOCK 00206R102   246    6523  SH       DEFINED                       6523
                                                7     175  SH       OTHER                          175
                                               44    1176  SH       DEF/OTH                       1176
AMERICAN EXPRESS CO  COMMON STOCK 025816109   264    4638  SH       DEFINED                       4638
AMETEK INC           COMMON STOCK 031100100   253    7150  SH       DEFINED                       7150
BERKSHIRE            COMMON STOCK 084670108   265       2  SH       DEFINED                          2
HATHAWAY INC
                                              133       1  SH       DEF/OTH                          1
BERKSHIRE            COMMON STOCK 084670702     9     100  SH       SOLE                           100
HATHAWAY INC
                                              298    3375  SH       DEFINED                       3375
                                               67     759  SH       OTHER                          759
                                              128    1450  SH       DEF/OTH                       1450
CSX CORP             COMMON STOCK 126408103   125    6011  SH       SOLE             1007
                                                                    SOLE                          5004
                                              290   13979  SH       DEFINED          1823
                                                                    DEFINED                      12156
                                               12     585  SH       OTHER             435
                                                                    OTHER                          150
COLUMN TOTALS                                2496




                          FORM 13F INFORMATION TABLE



                                                   SHS                             VOTING AUTHORITY
NAME OF ISSUER       TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   ----------------
SECURITY NAME         CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
------------------ ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ ----
                                                              
CVS CAREMARK CORP  COMMON STOCK 126650100   143    2945  SH       SOLE              498
                                                                  SOLE                         2447
                                            111    2295  SH       DEFINED           973
                                                                  DEFINED                      1322
                                             19     385  SH       OTHER             185
                                                                  OTHER                         200
                                             21     435  SH       DEF/OTH                       435
CATERPILLAR INC    COMMON STOCK 149123101   146    1697  SH       SOLE              310
                                                                  SOLE                         1387
                                            101    1172  SH       DEFINED           474
                                                                  DEFINED                       698
                                             19     226  SH       OTHER             126
                                                                  OTHER                         100
CHEVRON CORP       COMMON STOCK 166764100   200    1713  SH       SOLE              320
                                                                  SOLE                         1393
                                            397    3409  SH       DEFINED           981
                                                                  DEFINED                      2428
                                             99     847  SH       OTHER             547
                                                                  OTHER                         300
                                             19     164  SH       DEF/OTH                       164
COCA COLA CO       COMMON STOCK 191216100   106    2790  SH       SOLE              475
                                                                  SOLE                         2315
                                             91    2398  SH       DEFINED          1033
                                                                  DEFINED                      1365
                                             50    1309  SH       OTHER             349
                                                                  OTHER                         960
                                              0       2  SH       DEF/OTH                         2
COLUMN TOTALS                              1522




                          FORM 13F INFORMATION TABLE



                                                  SHS                               VOTING AUTHORITY
NAME OF ISSUER      TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   --------------------
SECURITY NAME        CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS  SOLE  SHARED  NONE
----------------- ------------ --------- ------- ------ --- ---- ------- -------- ------ ------ ------
                                                               
DIRECTV           COMMON STOCK 25490A309    160    3059 SH       SOLE                556
                                                                 SOLE                             2503
                                            128    2450 SH       DEFINED             976
                                                                 DEFINED                          1474
                                             12     227 SH       OTHER               227
DU PONT E I DE    COMMON STOCK 263534109     92    1839 SH       SOLE                324
NEMOURS & CO                                                     SOLE                             1515
                                             95    1881 SH       DEFINED             845
                                                                 DEFINED                          1036
                                             32     645 SH       OTHER               145
                                                                 OTHER                             500
EXXON MOBIL CORP  COMMON STOCK 30231G102    293    3200 SH       DEFINED                          3200
                                             65     713 SH       OTHER                             713
                                             61     664 SH       DEF/OTH                           664
HORIZON BANCORP   COMMON STOCK 440407104     11     375 SH       SOLE                              375
IND
                                          24607  860996 SH       DEFINED          586993
                                                                 DEFINED                        274003
                                            564   19717 SH       OTHER                           19717
                                           4196  146813 SH       DEF/OTH            6547
                                                                 DEF/OTH                        140266
COLUMN TOTALS                             30316




                          FORM 13F INFORMATION TABLE



                                                   SHS                             VOTING AUTHORITY
NAME OF ISSUER       TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   -----------------
SECURITY NAME         CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
------------------ ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ -----
                                                              
INTEL CORP         COMMON STOCK 458140100   100    4399  SH       SOLE              739
                                                                  SOLE                          3660
                                             39    1700  SH       DEFINED           405
                                                                  DEFINED                       1295
                                            102    4507  SH       OTHER             307
                                                                  OTHER                         4200
INTERNATIONAL      COMMON STOCK 459200101   274    1322  SH       SOLE              232
BUSINESS MACHINES                                                 SOLE                          1090
                                            402    1936  SH       DEFINED           381
                                                                  DEFINED                       1555
                                             34     163  SH       OTHER             113
                                                                  OTHER                           50
ISHARES            ETF-EQUITY   464287549   845   12202  SH       SOLE             2137
                                                                  SOLE                         10065
                                            622    8978  SH       DEFINED          3525
                                                                  DEFINED                       5453
                                             61     880  SH       OTHER             755
                                                                  OTHER                          125
JOHNSON & JOHNSON  COMMON STOCK 478160104   183    2661  SH       SOLE              472
                                                                  SOLE                          2189
                                            189    2738  SH       DEFINED          1057
                                                                  DEFINED                       1681
                                             28     410  SH       OTHER             210
                                                                  OTHER                          200
COLUMN TOTALS                              2879




                          FORM 13F INFORMATION TABLE



                                                   SHS                             VOTING AUTHORITY
NAME OF ISSUER       TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   ----------------
SECURITY NAME         CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
------------------ ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ ----
                                                              
L-3                COMMON STOCK 502424104    96    1341  SH       SOLE              245
COMMUNICATIONS                                                    SOLE                         1096
HOLDINGS CORP
                                             91    1265  SH       DEFINED           486
                                                                  DEFINED                       779
                                             27     382  SH       OTHER             132
                                                                  OTHER                         250
LABORATORY CORP    COMMON STOCK 50540R409   171    1850  SH       SOLE              328
AMERICA HLDGS                                                     SOLE                         1522
                                            142    1532  SH       DEFINED           651
                                                                  DEFINED                       881
                                             27     288  SH       OTHER             188
                                                                  OTHER                         100
MARATHON OIL CORP  COMMON STOCK 565849106   108    3658  SH       SOLE              665
                                                                  SOLE                         2993
                                             94    3183  SH       DEFINED          1300
                                                                  DEFINED                      1883
                                             11     362  SH       OTHER             312
                                                                  OTHER                          50
                                             10     331  SH       DEF/OTH                       331
MARATHON PETE      COMMON STOCK 56585A102   117    2144  SH       SOLE              390
CORP                                                              SOLE                         1754
                                             98    1790  SH       DEFINED           746
                                                                  DEFINED                      1044
                                             12     218  SH       OTHER             168
                                                                  OTHER                          50
                                              9     165  SH       DEF/OTH                       165
COLUMN TOTALS                              1013




                          FORM 13F INFORMATION TABLE



                                                   SHS                             VOTING AUTHORITY
NAME OF ISSUER       TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   ----------------
SECURITY NAME         CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
------------------ ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ ----
                                                              
MICROSOFT CORP     COMMON STOCK 594918104   202    6790  SH       SOLE             1198
                                                                  SOLE                         5592
                                            149    5013  SH       DEFINED          2083
                                                                  DEFINED                      2930
                                             44    1467  SH       OTHER             347
                                                                  OTHER                        1120
                                             23     778  SH       DEF/OTH                       778
NATIONAL OIL WELL  COMMON STOCK 637071101   179    2234  SH       SOLE              407
VARCO INC                                                         SOLE                         1827
                                            143    1789  SH       DEFINED           761
                                                                  DEFINED                      1028
                                             14     175  SH       OTHER             175
OMNICOM GROUP      COMMON STOCK 681919106   155    3015  SH       SOLE              538
                                                                  SOLE                         2477
                                            136    2638  SH       DEFINED           869
                                                                  DEFINED                      1769
                                             10     190  SH       OTHER             190
PEPSICO INC        COMMON STOCK 713448108   111    1570  SH       SOLE              285
                                                                  SOLE                         1285
                                            207    2919  SH       DEFINED           460
                                                                  DEFINED                      2459
                                             27     377  SH       OTHER             177
                                                                  OTHER                         200
                                             17     236  SH       DEF/OTH                       236
COLUMN TOTALS                              1417




                          FORM 13F INFORMATION TABLE



                                                      SHS                              VOTING AUTHORITY
NAME OF ISSUER        TITLE OF                VALUE   PRN   SH  PUT  INVSTMT  OTHER   ------------------
SECURITY NAME          CLASS         CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE  SHARED NONE
------------------ --------------- --------- ------- ------ --- ---- ------- -------- ----- ------ -----
                                                                  
PFIZER INC         COMMON STOCK    717081103  2190    88138 SH       DEFINED                       88138
                                              3113   125280 SH       OTHER            41018
                                                                     OTHER                         84262
                                                20      794 SH       DEF/OTH                         794
PHILIP MORRIS      COMMON STOCK    718172109   210     2340 SH       SOLE               393
INTERNATIONAL INC                                                    SOLE                           1947
                                               443     4927 SH       DEFINED           1899
                                                                     DEFINED                        3028
                                                44      493 SH       OTHER               43
                                                                     OTHER                           450
POWERSHARES        ETF-EQUITY      73935X500    34     8097 SH       SOLE              1467
                                                                     SOLE                           6630
                                                24     5849 SH       DEFINED           2449
                                                                     DEFINED                        3400
                                                 0      149 SH       OTHER              149
POWERSHARES        ETF-EQUITY      73935X799   211     6100 SH       SOLE              1024
                                                                     SOLE                           5076
                                                83     2393 SH       DEFINED            557
                                                                     DEFINED                        1836
                                                15      422 SH       OTHER              422
SPDR               ETF-ALTERNATIVE 78463V107   301     1750 SH       DEFINED             25
                   ASSETS                                            DEFINED                        1725
                                                77      450 SH       OTHER              450
                                                 0        3 SH       DEF/OTH                           3
COLUMN TOTALS                                 6765




                          FORM 13F INFORMATION TABLE



                                                SHS                             VOTING AUTHORITY
NAME OF ISSUER    TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   ----------------
SECURITY NAME      CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
--------------- ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ ----
                                                           
SPDR            ETF-EQUITY   78464A698   151    5280  SH       SOLE              879
                                                               SOLE                         4401
                                         104    3638  SH       DEFINED          1648
                                                               DEFINED                      1990
                                          15     511  SH       OTHER             341
                                                               OTHER                         170
SELECT SECTORS  ETF-EQUITY   81369Y506   247    3365  SH       SOLE              615
                                                               SOLE                         2750
                                         202    2752  SH       DEFINED          1173
                                                               DEFINED                      1579
                                          22     293  SH       OTHER             293
SELECT SECTORS  ETF-EQUITY   81369Y886   356    9792  SH       SOLE             1725
                                                               SOLE                         8067
                                         249    6849  SH       DEFINED          2793
                                                               DEFINED                      4056
                                          36     982  SH       OTHER             682
                                                               OTHER                         300
AMERITRADE      COMMON STOCK 87236Y108   117    7620  SH       SOLE             1355
HOLDING CORP                                                   SOLE                         6265
                                          87    5675  SH       DEFINED          2377
                                                               DEFINED                      3298
                                           8     517  SH       OTHER             517
TJX COS INC     COMMON STOCK 872540109   234    5228  SH       SOLE              954
                                                               SOLE                         4274
                                         186    4155  SH       DEFINED          1717
                                                               DEFINED                      2438
                                          18     412  SH       OTHER             412
COLUMN TOTALS                           2032




                          FORM 13F INFORMATION TABLE



                                              SHS                             VOTING AUTHORITY
NAME OF ISSUER   TITLE OF             VALUE   PRN   SH  PUT  INVSTMT  OTHER   ----------------
SECURITY NAME     CLASS      CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
--------------  ---------- --------- ------- ------ --- ---- ------- -------- ---- ------ ----
                                                         
VANGUARD        ETF-EQUITY 92204A108   246    3283  SH       SOLE              582
                                                             SOLE                         2701
                                       195    2599  SH       DEFINED          1092
                                                             DEFINED                      1507
                                        15     202  SH       OTHER             202
VANGUARD        ETF-EQUITY 92204A207   251    2741  SH       SOLE              519
                                                             SOLE                         2222
                                       211    2303  SH       DEFINED           975
                                                             DEFINED                      1328
                                        26     285  SH       OTHER             285
VANGUARD        ETF-EQUITY 92204A405   320    9758  SH       SOLE             1757
                                                             SOLE                         8001
                                       252    7681  SH       DEFINED          3027
                                                             DEFINED                      4654
                                        32     987  SH       OTHER             887
                                                             OTHER                         100
VANGUARD        ETF-EQUITY 92204A504   463    6326  SH       SOLE             1125
                                                             SOLE                         5201
                                       333    4552  SH       DEFINED          1819
                                                             DEFINED                      2733
                                        13     182  SH       OTHER             182
COLUMN TOTALS                         2357




                          FORM 13F INFORMATION TABLE



                                                 SHS                             VOTING AUTHORITY
NAME OF ISSUER     TITLE OF              VALUE   PRN   SH  PUT  INVSTMT  OTHER   -----------------
SECURITY NAME       CLASS       CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE SHARED NONE
---------------- ------------ --------- ------- ------ --- ---- ------- -------- ---- ------ -----
                                                            
VANGUARD         ETF-EQUITY   92204A603   170    2468  SH       SOLE              441
                                                                SOLE                          2027
                                          125    1805  SH       DEFINED           710
                                                                DEFINED                       1095
                                           15     216  SH       OTHER             216
VANGUARD         ETF-EQUITY   92204A801   227    2742  SH       SOLE              481
                                                                SOLE                          2261
                                          161    1942  SH       DEFINED           776
                                                                DEFINED                       1166
                                           14     172  SH       OTHER             172
VANGUARD         ETF-EQUITY   92204A884   311    4139  SH       SOLE              738
                                                                SOLE                          3401
                                          225    2999  SH       DEFINED          1200
                                                                DEFINED                       1799
                                           19     251  SH       OTHER             251
WAL MART STORES  COMMON STOCK 931142103   121    1639  SH       SOLE              289
INC                                                             SOLE                          1350
                                          219    2967  SH       DEFINED          1299
                                                                DEFINED                       1668
                                           16     216  SH       OTHER             140
                                                                OTHER                           76
                                           38     521  SH       DEF/OTH                        521
WALGREEN CO      COMMON STOCK 931422109     1      35  SH       SOLE               35
                                          531   14569  SH       DEFINED           344
                                                                DEFINED                      14225
                                           22     600  SH       OTHER                          600
                                           13     369  SH       DEF/OTH                        369
COLUMN TOTALS                            2228




                          FORM 13F INFORMATION TABLE



                                                    SHS                             VOTING AUTHORITY
NAME OF ISSUER       TITLE OF               VALUE   PRN   SH  PUT  INVSTMT  OTHER   -----------------
SECURITY NAME         CLASS        CUSIP   X $1000 AMOUNT PRN CALL DISCRTN MANAGERS SOLE  SHARED NONE
------------------ ------------- --------- ------- ------ --- ---- ------- -------- ----- ------ ----
                                                                
WELLS FARGO & CO   COMMON STOCK  949746101    242   6997  SH       SOLE              1275
                                                                   SOLE                          5722
                                              431  12478  SH       DEFINED           4050
                                                                   DEFINED                       8428
                                               38   1089  SH       OTHER              589
                                                                   OTHER                          500
XPO LOGISTICS INC  COMMON STOCK  983793100    728  59441  SH       DEFINED          59441
ACCENTURE PLC      FOREIGN STOCK G1151C101    242   3449  SH       SOLE               607
                                                                   SOLE                          2842
                                              169   2420  SH       DEFINED            988
                                                                   DEFINED                       1432
                                               20    292  SH       OTHER              242
                                                                   OTHER                           50
NOBLE CORPORATION  COMMON STOCK  H5833N103    124   3454  SH       SOLE               583
SWITZERLAND                                                        SOLE                          2871
                                               95   2668  SH       DEFINED           1124
                                                                   DEFINED                       1544
                                                9    259  SH       OTHER              259
COLUMN TOTALS                                2098

AGGREGATE TOTAL                             55123




                             FORM 13F SUMMARY PAGE


Report Summary:

Number of Other Included Managers:      0

Form 13F Information Table Entry Total: 154

Form 13F Information Table Value Total: $55,123

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment Managers with respect to which this report is filed,
other than the Manager filing this report.

NONE