8-K 1 bam0300k.txt MARCH 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 Form 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 25, 2004 BANC OF AMERICA MORTGAGE SECURITIES, INC. Mortgage Pass-Through Certificates, Series 2003-K Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-105940-15 54-2135811 Pooling and Servicing Agreement) (Commission 54-2135812 (State or other File Number) IRS EIN jurisdiction of Incorporation) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) ITEM 5. Other Events On March 25, 2004 a distribution was made to holders of BANC OF AMERICA MORTGAGE SECURITIES, INC., Mortgage Pass-Through Certificates, Series 2003-K Trust. ITEM 7. Financial Statements and Exhibits (c) Exhibits furnished in accordance with Item 601(a) of Regulation S-K Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-K Trust, relating to the March 25, 2004 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. BANC OF AMERICA MORTGAGE SECURITIES, INC. Mortgage Pass-Through Certificates, Series 2003-K Trust By: Wells Fargo Bank, N.A. as Trustee By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 4/2/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-K Trust, relating to the March 25, 2004 distribution. EX-99.1

Banc of America Mortgage Securities, Inc. Mortgage Pass-Through Certificates Record Date: 112/3029/032004 Distribution Date: 123/2625/032004 BAM Series: 2003-K Contact: Customer Service - CTSLink Wells Fargo Bank ~~Minnesota~~, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Principal Class CUSIP Description Rate Balance Distribution Distribution 1-A-1 05948XZB0 SEN 3.~~41912~~40693% 9483,~~278~~434,~~000~~443.0068 ~~268~~236,~~623~~879.3918 15,~~654~~745,~~513~~796.7656 1-A-2 05948XZC8 SEN 3.~~96912~~95693% 4842,~~425~~855,~~000~~310.0020 ~~160~~141,~~170~~312.6576 ~~849~~2,~~825~~951,273.2987 1-A-3 05948XZD6 SEN 3.~~96912~~95693% 1,~~575~~393,~~000~~848.0050 54,~~209~~596.4713 2795,~~640~~988.1677 1-A-R 05948XZE4 SEN 3.~~60973~~60725% 500.00 0.1500 500.00 1-A-LR 05948XZF1 SEN 3.~~60973~~60725% 500.00 0.3418 500.00 2-A-1 05948XZG9 SEN 4.~~25075~~24571% ~~237~~229,~~465~~616,~~000~~491.0048 ~~841~~812,~~169~~404.69 18,~~047~~533,~~461~~870.8635 2-A-2 05948XZH7 SEN 4.~~56575~~56071% ~~270~~261,~~000~~076,~~000~~169.0096 1992,~~027,293~~244.0748 19,~~190~~703,~~974~~093.2607 3-A-1 05948XZJ3 SEN 4.~~69012~~69063% 46,~~782~~537,~~000~~526.0061 ~~182~~181,~~844~~908.4259 57625,~~723~~605.7195 B-1 05948XZK0 SUB 4.~~26952~~26353% 10,~~098~~066,~~000~~240.0009 35,~~928~~764.0575 10,~~493~~761.1081 B-2 05948XZL8 SUB 4.~~26952~~26353% 5,~~770~~751,~~000~~852.0038 20,~~529~~435.3099 56,~~995~~149.7630 B-3 05948XZM6 SUB 4.~~26952~~26353% 2,~~885~~875,~~000~~926.0019 10,~~264~~217.6599 23,~~997~~074.8865 B-4 05948XZS3 SUB 4.~~26952~~26353% 1,~~082~~078,~~000~~596.0093 3,~~849~~832.6919 1,~~124~~153.3313 B-5 05948XZT1 SUB 4.~~26952~~26353% 1,~~082~~078,~~000~~596.0093 3,~~849~~832.6919 1,~~124~~153.3313 B-6 05948XZU8 SUB 4.~~26952~~26353% 1,~~803~~797,~~448~~775.0085 6,~~416~~387.5539 1,~~874~~922.0100 1-IO 05948XZP9 SEN 0.48040% 0.00 5952,~~637~~986.4957 0.00 2-IO 05948XZQ7 SEN 0.14740% 0.00 6462,~~361~~295.9396 0.00 3-IO 05948XZR5 SEN 0.15400% 0.00 6,~~198~~166.9989 0.00 SES 05948XZN4 SEN 0.00000% 0.00 ~~136~~133,~~475~~062.1174 0.00 Totals ~~721~~687,~~245~~562,~~548~~778.0080 2,~~832~~704,~~822~~328.6367 427,~~851~~679,~~848~~842.4559

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses 1-A-1 0.00 9277,~~623~~688,~~486~~647.2412 15,~~923~~982,~~137~~675.1574 0.00 1-A-2 0.00 4739,~~575~~904,~~174~~036.7133 13,~~009~~092,~~995~~586.9463 0.00 1-A-3 0.00 1,~~547~~297,~~359~~859.8473 32100,~~849~~584.6390 0.00 1-A-R 0.00 0.00 500.1500 0.00 1-A-LR 0.00 0.00 500.3418 0.00 2-A-1 0.00 ~~236~~221,~~417~~082,~~538~~621.1413 19,~~888~~346,~~631~~275.5504 0.00 2-A-2 0.00 ~~268~~251,~~809~~373,~~025~~076.7490 210,~~218~~695,~~267~~337.3355 0.00 3-A-1 0.00 4645,~~724~~911,~~276~~920.2967 ~~240~~807,~~568~~514.1354 0.00 B-1 0.00 10,~~087~~055,~~506~~478.9028 46,~~421~~526.1556 0.00 B-2 0.00 5,~~764~~745,~~004~~703.2408 26,~~525~~585.0629 0.00 B-3 0.00 2,~~882~~872,~~002~~851.1254 13,~~262~~292.5364 0.00 B-4 0.00 1,~~080~~077,~~875~~443.6780 4,~~974~~985.0232 0.00 B-5 0.00 1,~~080~~077,~~875~~443.6780 4,~~974~~985.0232 0.00 B-6 0.00 1,~~801~~795,~~573~~853.9985 8,~~290~~309.5639 0.00 1-IO 0.00 0.00 5952,~~637~~986.4957 0.00 2-IO 0.00 0.00 6462,~~361~~295.9396 0.00 3-IO 0.00 0.00 6,~~198~~166.9989 0.00 SES 0.00 0.00 ~~136~~133,~~475~~062.1174 0.00 Totals 0.00 ~~716~~659,~~393~~882,~~699~~936.5523 730,~~684~~384,~~671~~171.0826 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) 1-A-1 94,278,000.00 9483,~~278~~434,~~000~~443.0068 ~~127~~115,~~357~~315.0209 15,~~527~~630,~~156~~481.7447 0.00 0.00 1-A-2 48,425,000.00 4842,~~425~~855,~~000~~310.0020 6559,~~415~~230.7350 ~~784~~2,~~409~~892,043.5637 0.00 0.00 1-A-3 1,575,000.00 1,~~575~~393,~~000~~848.0050 21,~~127~~926.6244 2594,~~512~~062.5533 0.00 0.00 1-A-R 50.00 500.00 30.8500 460.1500 0.00 0.00 1-A-LR 50.00 500.00 30.8500 460.1500 0.00 0.00 2-A-1 237,465,000.00 ~~237~~229,~~465~~616,~~000~~491.0048 221,~~652~~198.1593 ~~825~~8,~~809~~312,671.7142 0.00 0.00 2-A-2 270,000,000.00 ~~270~~261,~~000~~076,~~000~~169.0096 ~~252~~251,~~020~~505.6432 ~~938~~9,~~953~~451,587.6375 0.00 0.00 3-A-1 46,782,000.00 46,~~782~~537,~~000~~526.0061 5758,~~270~~277.9236 ~~452~~567,328.7959 0.00 0.00 B-1 10,098,000.00 10,~~098~~066,~~000~~240.0009 10,~~493~~761.1081 0.00 0.00 0.00 B-2 5,770,000.00 5,~~770~~751,~~000~~852.0038 56,~~995~~149.7630 0.00 0.00 0.00 B-3 2,885,000.00 2,~~885~~875,~~000~~926.0019 23,~~997~~074.8865 0.00 0.00 0.00 B-4 1,082,000.00 1,~~082~~078,~~000~~596.0093 1,~~124~~153.3313 0.00 0.00 0.00 B-5 1,082,000.00 1,~~082~~078,~~000~~596.0093 1,~~124~~153.3313 0.00 0.00 0.00 B-6 1,803,448.00 1,~~803~~797,~~448~~775.0085 1,~~874~~922.0100 0.00 0.00 0.00 1-IO 0.00 0.00 0.00 0.00 0.00 0.00 2-IO 0.00 0.00 0.00 0.00 0.00 0.00 3-IO 0.00 0.00 0.00 0.00 0.00 0.00 SES 0.00 0.00 0.00 0.00 0.00 0.00 Totals 721,245,548.00 ~~721~~687,~~245~~562,~~548~~778.0080 ~~749~~731,~~461~~667.1966 426,~~102~~948,~~387~~174.2893 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution 1-A-1 15,~~654~~745,~~513~~796.7656 9277,~~623~~688,~~486~~647.2412 0.~~98245069~~82403792 15,~~654~~745,~~513~~796.7656 1-A-2 ~~849~~2,~~825~~951,273.2987 4739,~~575~~904,~~174~~036.7133 0.~~98245069~~82403792 ~~849~~2,~~825~~951,273.2987 1-A-3 2795,~~640~~988.1677 1,~~547~~297,~~359~~859.8473 0.~~98245069~~82403792 2795,~~640~~988.1677 1-A-R 500.00 0.00 0.00000000 500.00 1-A-LR 500.00 0.00 0.00000000 500.00 2-A-1 18,~~047~~533,~~461~~870.8635 ~~236~~221,~~417~~082,~~538~~621.1413 0.~~99558898~~93101140 18,~~047~~533,~~461~~870.8635 2-A-2 19,~~190~~703,~~974~~093.2607 ~~268~~251,~~809~~373,~~025~~076.7490 0.~~99558898~~93101140 19,~~190~~703,~~974~~093.2607 3-A-1 57625,~~723~~605.7195 4645,~~724~~911,~~276~~920.2967 0.~~99876611~~98140141 57625,~~723~~605.7195 B-1 10,~~493~~761.1081 10,~~087~~055,~~506~~478.9028 0.~~99896087~~99578909 10,~~493~~761.1081 B-2 56,~~995~~149.7630 5,~~764~~745,~~004~~703.2408 0.~~99896087~~99578910 56,~~995~~149.7630 B-3 23,~~997~~074.8865 2,~~882~~872,~~002~~851.1254 0.~~99896087~~99578910 23,~~997~~074.8865 B-4 1,~~124~~153.3313 1,~~080~~077,~~875~~443.6780 0.~~99896088~~99578909 1,~~124~~153.3313 B-5 1,~~124~~153.3313 1,~~080~~077,~~875~~443.6780 0.~~99896088~~99578909 1,~~124~~153.3313 B-6 1,~~874~~922.0100 1,~~801~~795,~~573~~853.9985 0.~~99896087~~99578909 1,~~874~~922.0100 1-IO 0.00 0.00 0.00000000 0.00 2-IO 0.00 0.00 0.00000000 0.00 3-IO 0.00 0.00 0.00000000 0.00 SES 0.00 0.00 0.00000000 0.00 Totals 427,~~851~~679,~~848~~842.4559 ~~716~~659,~~393~~882,~~699~~936.5523 0.~~99327296~~91492133 427,~~851~~679,~~848~~842.4559

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion 1-A-1 94,278,000.00 ~~1000~~884.~~00000000~~98317402 1.~~35086680~~22313891 1659.~~19844227~~72211407 0.00000000 1-A-2 48,425,000.00 ~~1000~~884.~~00000000~~98317398 1.~~35086691~~22313887 1659.~~19844213~~72211399 0.00000000 1-A-3 1,575,000.00 ~~1000~~884.~~00000000~~98317460 1.~~35086984~~22313651 1659.~~19844444~~72211429 0.00000000 1-A-R 50.00 ~~1000~~0.00000000 770.00000000 ~~923~~0.00000000 0.00000000 1-A-LR 50.00 ~~1000~~0.00000000 770.00000000 ~~923~~0.00000000 0.00000000 2-A-1 237,465,000.00 ~~1000~~966.~~00000000~~94877763 0.~~93340977~~93150119 335.~~47760601~~00588053 0.00000000 2-A-2 270,000,000.00 ~~1000~~966.~~00000000~~94877763 0.~~93340978~~93150119 335.~~47760604~~00588056 0.00000000 3-A-1 46,782,000.00 ~~1000~~994.~~00000000~~77419969 1.~~22420846~~24572186 012.~~00967872~~12707003 0.00000000 B-1 10,098,000.00 ~~1000~~996.~~00000000~~85483165 1.~~03912656~~06573678 0.00000000 0.00000000 B-2 5,770,000.00 ~~1000~~996.~~00000000~~85483189 1.~~03912652~~06573657 0.00000000 0.00000000 B-3 2,885,000.00 ~~1000~~996.~~00000000~~85483189 1.~~03912652~~06573657 0.00000000 0.00000000 B-4 1,082,000.00 ~~1000~~996.~~00000000~~85483364 1.~~03912200~~06573937 0.00000000 0.00000000 B-5 1,082,000.00 ~~1000~~996.~~00000000~~85483364 1.~~03912200~~06573937 0.00000000 0.00000000 B-6 1,803,448.00 ~~1000~~996.~~00000000~~85483030 1.~~03912616~~06573630 0.00000000 0.00000000 1-IO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 2-IO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 3-IO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 SES 0.00 0.00000000 0.00000000 0.00000000 0.00000000 2) All classes are per $1,000 denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution 1-A-1 0.00000000 1760.~~54930906~~94525298 ~~982~~824.~~45069094~~03792104 0.~~98245069~~82403792 1760.~~54930906~~94525298 1-A-2 0.00000000 1760.~~54930903~~94525287 ~~982~~824.~~45069097~~03792112 0.~~98245069~~82403792 1760.~~54930903~~94525287 1-A-3 0.00000000 1760.~~54930794~~94525079 ~~982~~824.~~45069206~~03792381 0.~~98245069~~82403792 1760.~~54930794~~94525079 1-A-R 0.00000000 ~~1,000~~0.00000000 0.00000000 0.00000000 ~~1,000~~0.00000000 1-A-LR 0.00000000 ~~1,000~~0.00000000 0.00000000 0.00000000 ~~1,000~~0.00000000 2-A-1 0.00000000 435.~~41101577~~93738172 ~~995~~931.~~58898423~~01139591 0.~~99558898~~93101140 435.~~41101577~~93738172 2-A-2 0.00000000 435.~~41101578~~93738174 ~~995~~931.~~58898422~~01139593 0.~~99558898~~93101140 435.~~41101578~~93738174 3-A-1 0.00000000 113.~~23388718~~37279189 ~~998~~981.~~76611282~~40140802 0.~~99876611~~98140141 113.~~23388718~~37279189 B-1 0.00000000 1.~~03912656~~06573678 ~~998~~995.~~96087344~~78909487 0.~~99896087~~99578909 1.~~03912656~~06573678 B-2 0.00000000 1.~~03912652~~06573657 ~~998~~995.~~96087348~~78909532 0.~~99896087~~99578910 1.~~03912652~~06573657 B-3 0.00000000 1.~~03912652~~06573657 ~~998~~995.~~96087348~~78909532 0.~~99896087~~99578910 1.~~03912652~~06573657 B-4 0.00000000 1.~~03912200~~06573937 ~~998~~995.~~96087800~~78909427 0.~~99896088~~99578909 1.~~03912200~~06573937 B-5 0.00000000 1.~~03912200~~06573937 ~~998~~995.~~96087800~~78909427 0.~~99896088~~99578909 1.~~03912200~~06573937 B-6 0.00000000 1.~~03912616~~06573630 ~~998~~995.~~96087384~~78909400 0.~~99896087~~99578909 1.~~03912616~~06573630 1-IO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 2-IO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3-IO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 SES 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall 1-A-1 94,278,000.00 3.~~41912~~40693% 9483,~~278~~434,~~000~~443.0068 ~~268~~236,~~623~~879.3918 0.00 0.00 1-A-2 48,425,000.00 3.~~96912~~95693% 4842,~~425~~855,~~000~~310.0020 ~~160~~141,~~170~~312.6576 0.00 0.00 1-A-3 1,575,000.00 3.~~96912~~95693% 1,~~575~~393,~~000~~848.0050 54,~~209~~596.4713 0.00 0.00 1-A-R 50.00 3.~~60973~~60725% 500.00 0.1500 0.00 0.00 1-A-LR 50.00 3.~~60973~~60725% 500.00 0.1500 0.00 0.00 2-A-1 237,465,000.00 4.~~25075~~24571% ~~237~~229,~~465~~616,~~000~~491.0048 ~~841~~812,~~169~~404.6968 0.00 0.00 2-A-2 270,000,000.00 4.~~56575~~56071% ~~270~~261,~~000~~076,~~000~~169.0096 1992,~~027,293~~244.0747 0.00 0.00 3-A-1 46,782,000.00 4.~~69012~~69063% 46,~~782~~537,~~000~~526.0061 ~~182~~181,~~844~~908.4259 0.00 0.00 B-1 10,098,000.00 4.~~26952~~26353% 10,~~098~~066,~~000~~240.0009 35,~~928~~764.0575 0.00 0.00 B-2 5,770,000.00 4.~~26952~~26353% 5,~~770~~751,~~000~~852.0038 20,~~529~~435.3099 0.00 0.00 B-3 2,885,000.00 4.~~26952~~26353% 2,~~885~~875,~~000~~926.0019 10,~~264~~217.6599 0.00 0.00 B-4 1,082,000.00 4.~~26952~~26353% 1,~~082~~078,~~000~~596.0093 3,~~849~~832.6919 0.00 0.00 B-5 1,082,000.00 4.~~26952~~26353% 1,~~082~~078,~~000~~596.0093 3,~~849~~832.6919 0.00 0.00 B-6 1,803,448.00 4.~~26952~~26353% 1,~~803~~797,~~448~~775.0085 6,~~416~~387.5539 0.00 0.00 1-IO 0.00 0.48040% ~~148~~132,~~971~~357,~~131~~515.7681 5952,~~637~~986.4957 0.00 0.00 2-IO 0.00 0.14740% ~~523~~507,~~970~~151,~~608~~553.5870 6462,~~361~~295.9396 0.00 0.00 3-IO 0.00 0.15400% 48,~~303~~053,~~808~~709.2386 6,~~198~~166.9989 0.00 0.00 SES 0.00 0.00000% ~~721~~687,~~245~~562,~~548~~779.5737 0.00 0.00 0.00 Totals 721,245,548.00 2,~~696~~571,~~347~~265.3373 0.00 0.00

Interest Distribution Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance 1-A-1 0.00 0.00 ~~268~~236,~~623~~879.3918 0.00 9277,~~623~~688,~~486~~647.2412 1-A-2 0.00 0.00 ~~160~~141,~~170~~312.6576 0.00 4739,~~575~~904,~~174~~036.7133 1-A-3 0.00 0.00 54,~~209~~596.4713 0.00 1,~~547~~297,~~359~~859.8473 1-A-R 0.00 0.00 0.1500 0.00 0.00 1-A-LR 0.00 0.00 0.3418 0.00 0.00 2-A-1 (0.0001) 0.00 ~~841~~812,~~169~~404.69 0.00 ~~236~~221,~~417~~082,~~538~~621.1413 2-A-2 (0.0001) 0.00 1992,~~027,293~~244.0748 0.00 ~~268~~251,~~809~~373,~~025~~076.7490 3-A-1 0.00 0.00 ~~182~~181,~~844~~908.4259 0.00 4645,~~724~~911,~~276~~920.2967 B-1 0.00 0.00 35,~~928~~764.0575 0.00 10,~~087~~055,~~506~~478.9028 B-2 0.00 0.00 20,~~529~~435.3099 0.00 5,~~764~~745,~~004~~703.2408 B-3 0.00 0.00 10,~~264~~217.6599 0.00 2,~~882~~872,~~002~~851.1254 B-4 0.00 0.00 3,~~849~~832.6919 0.00 1,~~080~~077,~~875~~443.6780 B-5 0.00 0.00 3,~~849~~832.6919 0.00 1,~~080~~077,~~875~~443.6780 B-6 0.00 0.00 6,~~416~~387.5539 0.00 1,~~801~~795,~~573~~853.9985 1-IO 0.00 0.00 5952,~~637~~986.4957 0.00 ~~146~~123,~~432~~557,~~712~~996.6477 2-IO 0.00 0.00 6462,~~361~~295.9396 0.00 ~~521~~488,~~716~~898,~~765~~734.9676 3-IO 0.00 0.00 6,~~198~~166.9989 0.00 4847,~~244~~426,~~221~~205.5125 SES 0.00 0.00 ~~136~~133,~~475~~062.1174 0.00 ~~716~~659,~~393~~882,~~700~~936.1178 Totals (0.0002) 0.00 2,~~832~~704,~~822~~328.6367 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall 1-A-1 94,278,000.00 3.~~41912~~40693% ~~1000~~884.~~00000000~~98317402 2.~~84926908~~51256051 0.00000000 0.00000000 1-A-2 48,425,000.00 3.~~96912~~95693% ~~1000~~884.~~00000000~~98317398 32.~~30760248~~91817780 0.00000000 0.00000000 1-A-3 1,575,000.00 3.~~96912~~95693% ~~1000~~884.~~00000000~~98317460 32.~~30760000~~91817778 0.00000000 0.00000000 1-A-R 50.00 3.~~60973~~60725% ~~1000~~0.00000000 30.00000000 0.00000000 0.00000000 1-A-LR 50.00 3.~~60973~~60725% ~~1000~~0.00000000 30.00000000 0.00000000 0.00000000 2-A-1 237,465,000.00 4.~~25075~~24571% ~~1000~~966.~~00000000~~94877763 3.~~54228914~~42115545 0.00000000 0.00000000 2-A-2 270,000,000.00 4.~~56575~~56071% ~~1000~~966.~~00000000~~94877763 3.~~80478915~~67497952 0.00000000 0.00000000 3-A-1 46,782,000.00 4.~~69012~~69063% ~~1000~~994.~~00000000~~77419969 3.~~90843530~~88843123 0.00000000 0.00000000 B-1 10,098,000.00 4.~~26952~~26353% ~~1000~~996.~~00000000~~85483165 3.~~55793722~~54176570 0.00000000 0.00000000 B-2 5,770,000.00 4.~~26952~~26353% ~~1000~~996.~~00000000~~85483189 3.~~55793761~~54176603 0.00000000 0.00000000 B-3 2,885,000.00 4.~~26952~~26353% ~~1000~~996.~~00000000~~85483189 3.~~55793761~~54176430 0.00000000 0.00000000 B-4 1,082,000.00 4.~~26952~~26353% ~~1000~~996.~~00000000~~85483364 3.~~55793900~~54176525 0.00000000 0.00000000 B-5 1,082,000.00 4.~~26952~~26353% ~~1000~~996.~~00000000~~85483364 3.~~55793900~~54176525 0.00000000 0.00000000 B-6 1,803,448.00 4.~~26952~~26353% ~~1000~~996.~~00000000~~85483030 3.~~55793458~~54176555 0.00000000 0.00000000 1-IO 0.00 0.48040% ~~1000~~888.~~00000000~~47761473 0.~~40032917~~35568348 0.00000000 0.00000000 2-IO 0.00 0.14740% ~~1000~~967.~~00000000~~90076656 0.~~12283500~~11889209 0.00000000 0.00000000 3-IO 0.00 0.15400% ~~1000~~994.~~00000000~~82238815 0.~~12833336~~12766882 0.00000000 0.00000000 SES 0.00 0.00000% ~~1000~~953.~~00000000~~29916522 0.00000000 0.00000000 0.00000000 5) All classes are per $1,000 denomination.

Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance 1-A-1 0.00000000 0.00000000 2.~~84926908~~51256051 0.00000000 ~~982~~824.~~45069094~~03792104 1-A-2 0.00000000 0.00000000 32.~~30760248~~91817780 0.00000000 ~~982~~824.~~45069097~~03792112 1-A-3 0.00000000 0.00000000 32.~~30760000~~91817778 0.00000000 ~~982~~824.~~45069206~~03792381 1-A-R 0.00000000 0.00000000 30.00000000 0.00000000 0.00000000 1-A-LR 0.00000000 0.00000000 63.~~80000000~~60000000 0.00000000 0.00000000 2-A-1 (0.~~00000000~~00000004) 0.00000000 3.~~54228914~~42115550 0.00000000 ~~995~~931.~~58898423~~01139591 2-A-2 (0.~~00000000~~00000004) 0.00000000 3.~~80478915~~67497956 0.00000000 ~~995~~931.~~58898422~~01139593 3-A-1 0.00000000 0.00000000 3.~~90843530~~88843123 0.00000000 ~~998~~981.~~76611282~~40140802 B-1 0.00000000 0.00000000 3.~~55793722~~54176570 0.00000000 ~~998~~995.~~96087344~~78909487 B-2 0.00000000 0.00000000 3.~~55793761~~54176603 0.00000000 ~~998~~995.~~96087348~~78909532 B-3 0.00000000 0.00000000 3.~~55793761~~54176430 0.00000000 ~~998~~995.~~96087348~~78909532 B-4 0.00000000 0.00000000 3.~~55793900~~54176525 0.00000000 ~~998~~995.~~96087800~~78909427 B-5 0.00000000 0.00000000 3.~~55793900~~54176525 0.00000000 ~~998~~995.~~96087800~~78909427 B-6 0.00000000 0.00000000 3.~~55793458~~54176555 0.00000000 ~~998~~995.~~96087384~~78909400 1-IO 0.00000000 0.00000000 0.~~40032917~~35568348 0.00000000 ~~982~~829.~~96032869~~40899562 2-IO 0.00000000 0.00000000 0.~~12283500~~11889209 0.00000000 ~~995~~933.~~69853235~~06518868 3-IO 0.00000000 0.00000000 0.~~12833336~~12766882 0.00000000 ~~998~~981.~~76641776~~83159854 SES 0.00000000 0.00000000 0.~~18922142~~18449021 0.00000000 ~~993~~914.~~27295888~~92133031 (6) Amount Does Not Include Excess Special Hazard, Bankruptcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Certificateholder Component Statement Component Beginning Ending Beginning Ending Ending Pass-Through Notional Notional Component Component Component Class Rate Balance Balance Balance Balance Percentage 1-SES 0.00000% ~~148~~132,~~971~~357,~~131~~515.7681 ~~146~~123,~~432~~557,~~712~~996.6477 0.00 0.00 9882.~~29603287~~94089956% 2-SES 0.00000% ~~523~~507,~~970~~151,~~608~~553.5870 ~~521~~488,~~716~~898,~~765~~734.9676 0.00 0.00 9993.~~56985324~~30651887% 3-SES 0.00000% 48,~~303~~053,~~808~~709.2386 4847,~~244~~426,~~221~~205.5125 0.00 0.00 9998.~~87664178~~18315985%

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 730,~~716~~414,~~826~~825.6109 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 0.00 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 730,~~716~~414,~~826~~825.6109 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 3230,~~155~~653.5383 Payment of Interest and Principal 730,~~684~~384,~~671~~171.0826 Total Withdrawals (Pool Distribution Amount) 730,~~716~~414,~~826~~825.6109 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee 3028,~~051~~648.8945 Trustee Fee - Wells Fargo Bank, N.A. 2,~~103~~005.6438 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 3230,~~155~~653.5383

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 011 0 0 0 011 05,536,832.0068 0.00 0.00 0.00 05,536,832.0068 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 011 0 0 0 011 05,536,832.0068 0.00 0.00 0.00 05,536,832.0068 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~000000~~848765% 0.000000% 0.000000% 0.000000% 0.~~000000~~848765% 0.~~000000~~838297% 0.000000% 0.000000% 0.000000% 0.~~000000~~838297% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.~~000000~~848765% 0.000000% 0.000000% 0.000000% 0.~~000000~~848765% 0.~~000000~~838297% 0.000000% 0.000000% 0.000000% 0.~~000000~~838297%

Delinquency Status By Groups

DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 1 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 02 0 0 0 02 01,011,772.0023 0.00 0.00 0.00 01,011,772.0023 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 02 0 0 0 02 01,011,772.0023 0.00 0.00 0.00 01,011,772.0023 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~000000~~800000% 0.000000% 0.000000% 0.000000% 0.~~000000~~800000% 0.~~000000~~817853% 0.000000% 0.000000% 0.000000% 0.~~000000~~817853% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.~~000000~~800000% 0.000000% 0.000000% 0.000000% 0.~~000000~~800000% 0.~~000000~~817853% 0.000000% 0.000000% 0.000000% 0.~~000000~~817853% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 2 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 08 0 0 0 08 04,041,927.0008 0.00 0.00 0.00 04,041,927.0008 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 08 0 0 0 08 04,041,927.0008 0.00 0.00 0.00 04,041,927.0008 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~000000~~839454% 0.000000% 0.000000% 0.000000% 0.~~000000~~839454% 0.~~000000~~826065% 0.000000% 0.000000% 0.000000% 0.~~000000~~826065% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.~~000000~~839454% 0.000000% 0.000000% 0.000000% 0.~~000000~~839454% 0.~~000000~~826065% 0.000000% 0.000000% 0.000000% 0.~~000000~~826065% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 3 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 01 0 0 0 01 0483,133.0037 0.00 0.00 0.00 0483,133.0037 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 01 0 0 0 01 0483,133.0037 0.00 0.00 0.00 0483,133.0037 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 01.~~000000~~075269% 0.000000% 0.000000% 0.000000% 01.~~000000~~075269% 01.~~000000~~017631% 0.000000% 0.000000% 0.000000% 01.~~000000~~017631% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 01.~~000000~~075269% 0.000000% 0.000000% 0.000000% 01.~~000000~~075269% 01.~~000000~~017631% 0.000000% 0.000000% 0.000000% 01.~~000000~~017631%

COLLATERAL STATEMENT Collateral Description Mixed ARM Weighted Average Gross Coupon 4.~~765470~~765180% Weighted Average Net Coupon 4.~~515470~~491118% Weighted Average Pass-Through Rate 4.~~486152~~487617% Weighted Average Maturity(Stepdown Calculation ) ~~356~~353 Beginning Scheduled Collateral Loan Count 1,~~401~~348 Number Of Loans Paid In Full 652 Ending Scheduled Collateral Loan Count 1,~~395~~296 Beginning Scheduled Collateral Balance ~~721~~687,~~245~~562,~~548~~779.0037 Ending Scheduled Collateral Balance ~~716~~659,~~393~~882,~~700~~936.1178 Ending Actual Collateral Balance at 3029-~~Nov~~Feb-~~2003~~2004 ~~721~~660,~~316~~485,~~112~~897.1965 Monthly P &I Constant 3,~~613~~461,~~689~~968.6545 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Ending Scheduled Balance for Premium Loans ~~716~~659,~~393~~882,~~700~~936.1178 Scheduled Principal ~~749~~731,~~461~~667.1866 Unscheduled Principal 426,~~102~~948,~~387~~174.2893

Miscellaneous Reporting Total Senior % 96.~~849832~~705902% Total Subordinate % 3.~~150168~~294098%

Group Level Collateral Statement Group Group 1 Group 2 Group 3 Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 4.~~468623~~456426 4.~~819247~~814213 5.~~097622~~098130 Weighted Average Net Rate 4.~~218623~~206426 4.~~569247~~564213 4.~~847623~~848130 Weighted Average Maturity ~~357~~354 ~~357~~354 ~~355~~352 Beginning Loan Count ~~297~~268 ~~1,010~~986 94 Loans Paid In Full 518 33 1 0 Ending Loan Count ~~292~~250 ~~1,009~~953 9493 Beginning Scheduled Balance ~~148~~132,~~971~~357,~~131~~515.7681 ~~523~~507,~~970~~151,~~608~~553.5870 48,~~303~~053,~~808~~709.2386 Ending scheduled Balance ~~146~~123,~~432~~557,~~712~~996.6477 ~~521~~488,~~716~~898,~~765~~734.9676 4847,~~244~~426,~~221~~205.5125 Record Date 1102/3029/~~2003~~2004 1102/3029/~~2003~~2004 1102/3029/~~2003~~2004 Principal And Interest Constant ~~755~~674,~~994~~466.48 2,~~593~~523,~~365~~172.7658 264,329.4139 Scheduled Principal ~~201~~182,~~247~~931.9787 ~~489~~488,~~079~~559.2877 5960,~~133~~176.9302 Unscheduled Principal 28,~~337~~616,~~171~~587.1517 117,764,~~763~~259.3417 ~~452~~567,328.7959 Scheduled Interest ~~554~~491,~~746~~534.5161 2,~~104~~034,~~286~~612.4881 ~~205~~204,~~195~~153.4837 Servicing Fees 3127,~~035~~574.6548 ~~109~~105,~~160~~656.5357 10,~~063~~011.2918 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee ~~434~~386.5004 1,~~528~~479.2519 140.8915 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 1513,~~517~~787.8323 0.00 0.00 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest ~~507~~449,~~758~~786.5386 1,~~993~~927,~~597~~477.7005 194,~~991~~002.3004 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 4.~~090123~~077926 4.~~565747~~560713 4.~~844122~~844630

Group Level Collateral Statement Group Total Collateral Description Mixed ARM Weighted Average Coupon Rate 4.~~765470~~765180 Weighted Average Net Rate 4.~~515470~~491118 Weighted Average Maturity ~~356~~353 Beginning Loan Count 1,~~401~~348 Loans Paid In Full 652 Ending Loan Count 1,~~395~~296 Beginning Scheduled Balance ~~721~~687,~~245~~562,~~548~~779.5737 Ending scheduled Balance ~~716~~659,~~393~~882,~~700~~936.1178 Record Date 1102/3029/~~2003~~2004 Principal And Interest Constant 3,~~613~~461,~~689~~968.6545 Scheduled Principal ~~749~~731,~~461~~667.1866 Unscheduled Principal 426,~~102~~948,~~387~~174.2893 Scheduled Interest 2,~~864~~730,~~228~~300.4779 Servicing Fees ~~150~~143,~~259~~242.4723 Master Servicing Fees 0.00 Trustee Fee 2,~~103~~005.6438 FRY Amount 0.00 Special Hazard Fee 0.00 Other Fee 1513,~~517~~787.8323 Pool Insurance Fee 0.00 Spread Fee 1 0.00 Spread Fee 2 0.00 Spread Fee 3 0.00 Net Interest 2,~~696~~571,~~347~~265.5395 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.0000 Prepayment Penalties 0.00 Special Servicing Fee 0.00 Pass-Through Rate 4.~~486152~~487617

Miscellaneous Reporting Group Group 1 CPR 1755.~~305427~~467725% Senior % 96.~~849704~~468721% Senior Prepayment % 100.000000% Subordinate% 3.~~150296~~531279% Subordinate Prepayment% 0.000000% Group Group 2 CPR 334.~~971273~~837650% Senior % 96.~~849898~~754640% Senior Prepayment % 100.000000% Subordinate% 3.~~150102~~245360% Subordinate Prepayment% 0.000000% Group Group 3 CPR 013.~~011262~~298268% Senior % 96.~~849507~~844815% Senior Prepayment % 100.000000% Subordinate% 3.~~150493~~155185% Subordinate Prepayment% 0.000000%

Filing Compare · BANC OF AMERICA MORTGAGE PASS-THROUGH CERT SER 2003-K