Form 13F Report for the Calendar Year or Quarter Ended: 6/30/2010

Check here if Amendment [ ]; Amendment Number: _________

     This Amendment (check only one): [ ] is a restatement
                                      [ ] adds new holdings entries

Institutional Investment Manager Filing this Report:

Name:    Horizon Bancorp
Address: 515 Franklin Square
         Michigan City, IN 46360

Form 13F File Number 28-6479

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      8/10/2010
------------------------------------------   -----------------------   ---------
                                                      Place               Date

Report Type (check only one):

[X]  13F Holdings Report

[ ]  13F Notice

[ ]  13F Combination Report

List of Other Managers Reporting for this Manager: Horizon Trust & Investment
Management



Report Summary:

Number of Other Included Managers:                     1

Form 13F Information Table Entry Total:              186

Form 13F Information Table Value Total:   $40,396,996.00

List of Other Included Managers: Horizon Trust & Investment Management






                                                                             INVESTMENT DIRECTION (6)           VOTING AUTHORITY (8)
                                                                            -------------------------  OTHER   ---------------------
                                                                 SHARES/PV            SHARED- SHARED- MANAGERS
        NAME OF ISSUER (1)         TYPE (2) CUSIP (3) MARKET (4)    (5)       SOLE    DEFINED  OTHER     (7)   SOLE SHARED    NONE
---------------------------------- -------- --------- ---------- ---------  --------- ------- ------- -------- ---- ------ ---------
                                                                                          
Aflac Inc                          Equity   001055102    453,923    10,638     10,453     185             0       0     0     10,638
AT&T Inc Com                       Equity   00206R102    280,507    11,596     10,801     795             0       0     0     11,596
Abbott Labs                        Equity   002824100    150,866     3,225        825   2,400             0       0     0      3,225
ADR Alcatel - Lucent               Equity   013904305        366       144        105      39             0       0     0        144
Altria Group Incorporated          Equity   02209S103    116,152      5796      5,346     450             0       0     0      5,796
American Electric & Power Co       Equity   025537101      7,397       229        229       0             0       0     0        229
American Express Co                Equity   025816109    184,129      4638      4,638       0             0       0     0      4,638
American International Group       Equity   026874784      1,171        34          0      34             0       0     0         34
Ameriprise Financial Inc           Equity   03076C106      31108       861        861       0             0       0     0        861
Ametek Inc                         Equity   031100100     167747      4178      4,178       0             0       0   300      3,878
Amgen Inc                          Equity   031162100      5,260       100          0     100             0       0     0        100
Apache Corp Co                     Equity   037411105     12,629       150          0     150             0       0     0        150
Apple, Inc                         Equity   037833100     25,153       100          0     100             0       0     0        100
Ares Capital Corp                  Equity   04010L103      1,629       130        130       0             0       0     0        130
Avanir Pharmaceuticals, Class A    Equity   05348P401      1,157       450        450       0             0       0     0        450
ADR AXA Sponsored                  Equity   054536107        388        25         25       0             0       0     0         25
ADR BP Amoco PLC                   Equity   055622104     457113     15828     10,536   5,292             0       0     0     15,828
Bank of America Corp               Equity   060505104     25,564     1,779         76   1,703             0       0     0      1,779
iPath S&P GSCI Crude Oil TR Index
   ETN                             Equity   06738C786     22,089     1,000      1,000       0             0       0     0      1,000
Berkshire Hathaway Inc Cl A        Equity   084670108    240,000         2          2       0             0       0     0          2
Berkshire Hathaway Class B         Equity   084670702    503,641     6,320      6,320       0             0       0     0      6,320
BlackRock Bond Portfolio Instl     Equity   091928341     37,500     3,968      3,968       0             0       0     0      3,968
BlackRock Insured Municipal Term
   Tr                              Equity   092474105     15,105      1500      1,500       0             0       0     0      1,500
BlackRock Invt Quality Muni Fd -
   Closed End                      Equity   09247D105      6,135       429        429       0             0       0     0        429
BlackRock MuniVest II              Equity   09253T101     93,089      6173      6,173       0             0       0     0      6,173
Blackrock Muniyield Insured        Equity   09254E103     10,296       745        745       0             0       0     0        745
Blackrock Muniyield Quality        Equity   09254F100     11,713       810        810       0             0       0     0        810
Boeing Co                          Equity   097023105      28740       458        308     150             0       0     0        458
Buffalo Wild Wings Inc             Equity   119848109      3,658       100          0     100             0       0     0        100
CME Group Inc                      Equity   12572Q105      7,883        28         28       0             0       0     0         28
CP Holdrs Dep Rcpts Cp             Equity   12616K106     10,800       100        100       0             0       0     0        100
CSX Corp                           Equity   126408103    161,992     3,264      3,264       0             0       0     0      3,264
Campbell Soup Company              Equity   134429109      3,583       100        100       0             0       0     0        100
Caterpillar Inc                    Equity   149123101    280,467      4669      4,483     186             0       0     0      4,669
Celgene Corp                       Equity   151020104      7,623       150          0     150             0       0     0        150
Chemical Financial                 Equity   163731102      8,712       400        400       0             0       0     0        400
Chesapeake Energy Corp             Equity   165167107        419        20         20       0             0       0     0         20
Chevron Corp                       Equity   166764100     606397      8936      8,491     445             0       0     0      8,936
Cisco Systems Incorporated         Equity   17275R102    237,180    11,130     10,537     593             0       0     0     11,130
Citigroup Inc                      Equity   172967101      2,538       675         75     600             0       0     0        675
Clorox Company                     Equity   189054109     27,599       444        444       0             0       0     0        444





                                                                                          
Coca Cola Company                  Equity   191216100    276,763      5522      3,693   1,829             0       0     0      5,522
Colgate Palmolive                  Equity   194162103      6,301        80         80       0             0       0     0         80
Comcast Corporation New Class A    Equity   20030N101      5,280       304        304       0             0       0     0        304
Conagra Foods                      Equity   205887102    254,165     10899     10,799     100             0       0     0     10,899
ConocoPhillips                     Equity   20825C104     90,227     1,838      1,838       0             0       0     0      1,838
Crane Co Com                       Equity   224399105      9,637       319          0     319             0     319     0        319
Cummins Inc                        Equity   231021106      6,513       100          0     100             0       0     0        100
CurrencyShares Australian Dollar
   Trust                           Equity   23129U101       9281       110        110       0             0       0     0        110
Currencyshares Swiss Franc Tr      Equity   23129V109      5,071        55         55       0             0       0     0         55
DNP Select Income                  Equity   23325P104     19,913     2,220      1,330     890             0       0     0      2,220
Deere & Co Inc                     Equity   244199105      8,352       150          0     150             0       0     0        150
Dell Inc                           Equity   24702R101     15,678      1300          0   1,300             0       0     0      1,300
Devon Energy Corp                  Equity   25179M103      6,092       100          0     100             0       0     0        100
Diamond Offshore Drilling Inc      Equity   25271C102       6219       100          0     100             0       0     0        100
Disney Walt Co                     Equity   254687106     12,600       400          0     400             0       0     0        400
Discover Financial Services        Equity   254709108      1,342        96         96       0             0       0     0         96
DirecTV Group Inc                  Equity   25490A101    351,886    10,374     10,204     170             0       0     0     10,374
Du Pont E I De Nemours & Co        Equity   263534109    247,249     7,148      6,463     685             0       0     0      7,148
Exelon Corp                        Equity   30161N101      3,797       100          0     100             0       0     0        100
Express 1 Expedited Solutions      Equity   30217Q108    278,819   221,285    221,285       0             0       0     0    221,285
Exxon Mobil Corporation            Equity   30231G102    592,330     10379      8,276   2,103             0       0     0     10,379
Fifth Third Bancorp                Equity   316773100      5,100       415        415       0             0       0     0        415
First Finl Bancorp OH              Equity   320209109     51,219     3,426      3,426       0             0       0     0      3,426
1st Source Corp                    Equity   336901103     52,283     3,090      3,090       0             0       0     0      3,090
FIRSTBANK CORP MICH                Equity   33761G104      8,460     2,000      2,000       0             0       0     0      2,000
Fluor Corp                         Equity   343412102    167,408      3939      3,907      32             0       0     0      3,939
Ford Motor Co                      Equity   345370860     10,080     1,000        500     500             0       0     0      1,000
Freeport-McMoran Copper & Gold Inc Equity   35671D857      5,913       100          0     100             0       0     0        100
Gallagher Arthur J & Co            Equity   363576109      7,314       300          0     300             0       0     0        300
General Electric Co                Equity   369604103    367,724     25501     22,597   2,904             0       0     0     25,501
General Mills Inc                  Equity   370334104    156,288      4400      4,400       0             0       0     0      4,400
Gilead Sciences Inc                Equity   375558103      3,428       100          0     100             0       0     0        100
Google Inc Cl A                    Equity   38259P508     17,798        40          0      40             0       0     0         40
Harley Davidson Inc                Equity   412822108     11,115       500          0     500             0       0     0        500
Hershey Foods Corp                 Equity   427866108     47,930     1,000      1,000       0             0       0     0      1,000
Honeywell Inc                      Equity   438516106     23,418       600        600       0             0       0     0        600
Horizon Bancorp Ind                Equity   440407104 13,597,703   637,492    619,536  17,956             0       0     0    637,492
ITT Industries Incorporated        Equity   450911102     29,333       653        653       0             0       0     0        653
Illinois Tool Works Incorporated   Equity   452308109     14,531       352        352       0             0       0     0        352
Intel Corp                         Equity   458140100     79,142     4,069         69   4,000             0       0     0      4,069
Intercontinentalexchange Inc       Equity   45865V100      2,826        25         25       0             0       0     0         25
International Business Machines    Equity   459200101    595,914     4,826      4,700     126             0       0     0      4,826
iShares Barclays Aggregate Bond    Equity   464287226    184,363      1719      1,719       0             0       0     0      1,719





                                                                                          
iShares S&P Global
   Telecommunications              Equity   464287275     12,433       260        260       0             0       0     0        260
iShares S&P 500 Value Index        Equity   464287408      5,463       110        110       0             0       0     0        110
iShares Barclays 1-3 Year Treasury
   Bond                            Equity   464287457     45,088       536        536       0             0       0     0        536
iShares MSCI EAFE Index            Equity   464287465     31,673       681        681       0             0       0     0        681
iShares S&P North America
   Technology Sector               Equity   464287549  1,145,315     23688     23,390     298             0       0     0     23,688
iShares Russell 1000 Value Index   Equity   464287598     31,875       588        588       0             0       0     0        588
iShares Russell 1000 Growth Index  Equity   464287614     31,944       697        697       0             0       0     0        697
iShares Dow Jones US Technology    Equity   464287721     13,674       265        265       0             0       0     0        265
iShares S&P SmallCap 600 Index     Equity   464287804     17,758       328        328       0             0       0     0        328
iShares Dow Jones US Consumer
   Goods                           Equity   464287812     13,088       245        245       0             0       0     0        245
iShares S&P SmallCap 600 Growth
   Index                           Equity   464287887      8,541       150        150       0             0       0     0        150
JP Morgan Chase and Company        Equity   46625H100     21,307       582        180     402             0       0     0        582
Johnson & Johnson                  Equity   478160104    516,539     8,746      8,391     355             0       0     0      8,746
Johnson Controls Incorporated      Equity   478366107     254513      9472      9,402      70             0       0     0      9,472
Kansas City Southern Industries
   Inc New                         Equity   485170302      7,634       210        210       0             0       0     0        210
Kimco Rlty Corp                    Equity   49446R109      8,064       600        600       0             0       0     0        600
Kraft Foods Incorporated Class A   Equity   50075N104      2,800       100        100       0             0       0     0        100
L-3 Communication Holdings
   Corporation                     Equity   502424104    471,228     6,652      6,256     396             0       0     0      6,652
Laboratory Corp Of America
   Holdings                        Equity   50540R409    502,358     6,667      6,511     156             0       0     0      6,667
Lakeland Finl Corp                 Equity   511656100      9,990       500        500       0             0       0     0        500
LaPorte Bancorp Inc                Equity   516650108     25,434     3,414      3,414       0             0       0     0      3,414
Lennar Corp                        Equity   526057104       4173       300          0     300             0       0     0        300
Lincoln National Corporation       Equity   534187109      24290     1,000      1,000       0             0       0     0      1,000
Lowes Company                      Equity   548661107      2,042       100          0     100             0       0     0        100
Macatawa Bank Corp                 Equity   554225102      1,840      1533          0   1,533             0       0     0      1,533
Marathon Oil Corporation           Equity   565849106    337,109    10,843     10,763      80             0       0     0     10,843
McDermott Intl Inc                 Equity   580037109      2,166       100          0     100             0       0     0        100
McDonalds Corporation              Equity   580135101     44,462       675        675       0             0       0     0        675
McGraw Hill Companies Incorporated Equity   580645109     17,841       634        634       0             0       0     0        634
Medtronic Incorporated             Equity   585055106      3,627       100        100       0             0       0     0        100
Merck & Co. Inc.                   Equity   58933Y105     13,988       400          0     400             0       0     0        400
Microsoft Corporation              Equity   594918104    351,133    15,260     13,830   1,430             0       0     0     15,260
Morgan Stanley                     Equity   617446448      4,456       192        192       0             0       0     0        192
National Oil Well Varco            Equity   637071101    223,322     6,753      6,699      54             0       0     0      6,753
Newmont Mining Corp                Equity   651639106     12,348       200          0     200             0       0     0        200
Nisource Incorporated              Equity   65473P105     11,107       766        766       0             0       0     0        766
Norfolk Southern Corporation       Equity   655844108      5,305       100        100       0             0       0     0        100
Northern Trust Corporation         Equity   665859104      2,335        50         50       0             0       0     0         50
Nucor Corp                         Equity   670346105      3,828       100          0     100             0       0     0        100
Nustar Energy LP                   Equity   67058H102      5,854       102        102       0             0       0     0        102
Nuveen Insured Quality Municipal
   Fund                            Equity   67062N103     20,506      1425          0   1,425             0       0     0      1,425
Nuveen Insd Dividend Advantage     Equity   67071L106     30,210     2,072          0   2,072             0       0     0      2,072
Nuveen Quality PFD Income Fund     Equity   67071S101       7160      1000      1,000       0             0       0     0      1,000





                                                                                          
Nuveen Multi-Strategy Income &
   Growth Fund                     Equity   67073B106      3,949       538          0     538             0       0     0        538
Old Second Bancorp Inc III         Equity   680277100      1,000       500        500       0             0       0     0        500
Omnicom Group                      Equity   681919106    264,830      7721      7,661      60             0       0     0      7,721
Oracle Corporation                 Equity   68389X105    111,592      5200          0   5,200             0       0     0      5,200
Pactiv Corporation                 Equity   695257105     13,925       500        500       0             0       0     0        500
Patterson Cos Inc                  Equity   703395103      1,626        57          0      57             0       0     0         57
Paychex Incorporated               Equity   704326107    247,390     9,526      9,301     225             0       0     0      9,526
Pepsico Incorporated               Equity   713448108    352,474     5,783      5,556     227             0       0     0      5,783
Pfizer Incorporated                Equity   717081103  3,155,439   221,279    136,757  84,522             0       0     0    221,279
Philip Morris Intl Inc             Equity   718172109    251,249      5481      5,031     450             0       0     0      5,481
Plum Creek Timber                  Equity   729251108     25,069       726        726       0             0       0     0        726
Potash Corp Sask Inc               Equity   73755L107     12,936       150          0     150             0       0     0        150
PowerShares WilderHill Clean
   Energy                          Equity   73935X500    149,556    18,106     17,971     135             0       0     0     18,106
PowerShares DB Energy              Equity   73936B101     23,150      1000      1,000       0             0       0     0      1,000
Procter & Gamble                   Equity   742718109     71,976      1200      1,200       0             0       0     0      1,200
Qwest Communications               Equity   749121109      1,197       228          0     228             0       0     0        228
Research In Motion                 Equity   760975102    174,824     3,549      3,522      27             0       0     0      3,549
ADR Rio Tinto PLC                  Equity   767204100     17,440       400          0     400             0       0     0        400
Rockwell Auto Corp                 Equity   773903109     27,589       562        562       0             0       0     0        562
ADR Royal Dutch Shell PLC          Equity   780259206    148,149     2,950      2,950       0             0       0     0      2,950
SPDR S&P 500                       Equity   78462F103     81,544       790        790       0             0       0     0        790
SPDR Gold Shares                   Equity   78463V107    288,138     2,368      2,368       0             0       0     0      2,368
SPDR S&P Midcap 400                Equity   78467Y107     14,466       112        112       0             0       0     0        112
Sara Lee Corporation               Equity   803111103        296        21         21       0             0       0     0         21
Select Sector SPDR Energy          Equity   81369Y506    516,324    10,393     10,316      77             0       0     0     10,393
Select Sector SPDR Utilities       Equity   81369Y886    585,152     20706     20,251     455             0       0     0     20,706
Starbucks Corporation              Equity   855244109      3,645       150          0     150             0       0     0        150
Stryker Corporation                Equity   863667101     40,048       800        800       0             0       0   100        700
Ameritrade Hldg Corp               Equity   87236Y108    281,413     18393     18,041     352             0       0     0     18,393
TJX Cos Inc New                    Equity   872540109    387,031      9226      9,160      66             0       0     0      9,226
TTC Technology Corp                Equity   87304R100          8     41700     41,700       0             0       0     0     41,700
Tenneco Automotive Inc             Equity   880349105      2,106       100        100       0             0       0     0        100
ADR Teva Pharmaceutical Ind        Equity   881624209    501,288     9,642      9,303     339             0       0     0      9,642
Tupperware Corp                    Equity   899896104      8,687       218        218       0             0       0     0        218
Turner Mid Cap Grth                Equity   900297409       2082        79         79       0             0       0     0         79
US Bancorp Delaware New            Equity   902973304      11175       500        500       0             0       0     0        500
Union Pacific Corporation          Equity   907818108     13,902       200        200       0             0       0     0        200
United Parcel Service              Equity   911312106      2,845        50         50       0             0       0     0         50
United States Steel Corp           Equity   912909108      3,855       100          0     100             0       0     0        100
Vanguard Consumer Discretionary
   ETF                             Equity   92204A108    359,995     7,751      7,689      62             0       0     0      7,751
Vanguard Consumer Staples ETF      Equity   92204A207    669,329     10473     10,390      83             0       0     0     10,473
Vanguard Financials ETF            Equity   92204A405    878,630    31,135     30,703     432             0       0     0     31,135
Vanguard Health Care ETF           Equity   92204A504     571530     11376     11,287      89             0       0     0     11,376





                                                                                          
Vanguard Industrials ETF           Equity   92204A603    405,943      7980      7,917      63             0       0     0      7,980
Vanguard Materials ETF             Equity   92204A801    405,870      6760      6,702      58             0       0     0      6,760
Vanguard Telecom Services ETF      Equity   92204A884    475,438      8957      8,883      74             0       0     0      8,957
Verizon Communications             Equity   92343V104     15,579       556        556       0             0       0     0        556
ADR Vodafone Group                 Equity   92857W209        124         6          6       0             0       0     0          6
Vulcan Materials Company           Equity   929160109      2,192        50          0      50             0      50     0         50
Wal-Mart Stores                    Equity   931142103    354,468     7,374      7,258     116             0       0     0      7,374
Walgreen Company                   Equity   931422109    703,145    26,335     25,572     763             0       0     0     26,335
Wells Fargo & Company New          Equity   949746101    911,590    35,609     34,528   1,081             0       0     0     35,609
Whirlpool Corp                     Equity   963320106    130,676     1,488      1,488       0             0       0    50      1,438
Wizzard Software Corporation       Equity   97750V109      1,104     5,520      5,520       0             0       0     0      5,520
Xilinx Incorporated                Equity   983919101      5,052       200          0     200             0       0     0        200
Zebra Technologies Corp Cl A       Equity   989207105     16,719       659          0     659             0       0     0        659
Accenture PLC                      Equity   G1151C101    277,855     7,189      7,129      60             0       0     0      7,189
Seagate Technology Shs             Equity   G7945J104      1,304       100        100       0             0       0     0        100
Noble Corporation Switzerland      Equity   H5833N103    209,044     6,763      6,508     255             0       0     0      6,763
                                                      ------------------------------------------------------------------------------
                                                      40,396,996 1,765,229  1,609,579 155,650             0     369   450  1,764,779
                                                      ==============================================================================