UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K /A Current Report Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): ~~January~~May 25, 2005 (Date of earliest event reported) IndyMac MBS Inc (as Depositor under the Pooling and Servicing Agreement, dated as August 1, 2003, providing for the issuance of IndyMac MBS, Inc. Residential Asset- Securitization Trust Series 2003-A9 Mortgage Pass-Through Certificates Series 2003-I. (Exact name of registrant as specified in charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-102888-08 95-4791925 (Commission File Number) (I.R.S. Employer Identification No.) 155 NORTH LAKE AVENUE PASADENA, CALIFORNIA 91101 (Address of principal executive offices) (Zip Code) Registrant's Telephone Number, Including Area Code: (800) 669-2300 (Former name or former address, if changed since last report.) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12(b)) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Item 8.01 Other Events Attached hereto is a copy of the Monthly Remittance Statements to the Certificateholders which was derived from the monthly information submitted by the Master Servicer of the Trust to the Trustee. Item 9.01 Financial Statements and Exhibits (c) Exhibits: Exhibit No. Description 99.1 Monthly Remittance Statement to the Certificateholders dated as of ~~January~~May 25, 2005. Signatures 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. Deutsche Bank National Trust Company, in its capacity as Trustee under the Pooling and Servicing Agreement on behalf of IndyMac MBS INC., Registrant Date: ~~Jan~~Jun 2702, 2005 By: /s/ Katherine M. Wannenmacher Katherine M. Wannenmacher Vice President EXHIBIT INDEX DOCUMENT 99.1 Monthly Remittance Statement to the Certificateholders dated as of ~~January~~May 25, 2005.

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

External Parties

Table of Contents

Page

Seller

1. Certificate Payment Report

IndyMac Bank

2. Collection Account Report

3. Credit Enhancement Report

4. Collateral Report

Certificate Insurer(s)

5. Delinquency Report

6. REO Report

7. Foreclosure Report

8. Prepayment Report

9. Prepayment Detail Report

10. Realized Loss Report

11. Realized Loss Detail Report

Servicer(s)

12. Triggers and Adj. Cert. Report

IndyMac Bank

13. Other Related Information

Underwriter(s)

Greenwich Capital Markets

Total Number of Pages

Dates

Contacts

Cut-Off Date:

July 01, 2003

~~James~~Brent ~~Noriega~~Hoyler

Close Date:

July 28, 2003

Administrator

First Distribution Date:

August 25, 2003

(714) 247-~~6281~~6322

james.noriega@db.com

Brent.Hoyler@db.com

Address:

1761 East St. Andrew Place, Santa Ana, CA 92705

Distribution Date:

~~January~~May 25, 2005

Factor Information:

(800) 735-7777

Record Date:

~~December~~April 3129, ~~2004~~2005

Main Phone Number:

(714) 247-6000

https://www.tss.db.com/invr

Page 1 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Certificate Payment Report

Current Period Distribution - Senior Certificates

Prior

Current

Class

Original

Principal

Total

Realized

Deferred

Principal

Class

Type

Cur

Face Value

Balance

Interest

Principal

Distribution

Loss

Interest

Balance

(1)

(2)

(3)

(4)=(2)+(3)

(5)

(6)

(7)=(1)-(3)-(5)+(6)

A-1

AD,AS

35,000,000.00

2321,~~503~~277,~~712~~346.9556

7870,~~345~~924.7149

~~536~~631,~~189~~034.1016

~~614~~701,~~534~~958.8165

0.00

2220,~~967~~646,~~523~~312.8540

A-2

Z,AS

3,175,425.00

3,~~360~~405,~~245~~272.0886

0.00

11,~~200~~350.8291

3,~~371~~416,~~445~~623.9077

A-3

FLT,AS

108,612,255.00

7366,~~673~~912,~~595~~930.6001

~~182~~199,~~188~~065.6697

1,~~627~~917,~~997~~068.5135

12,~~810~~116,~~186~~134.1732

0.00

7264,~~045~~995,~~598~~861.0966

A-4

IO,INV,NTL

0.00

~~308~~247,~~968~~020.6424

0.00

~~308~~247,~~968~~020.6424

0.00

A-5

AD,TAC,AS

80,000,000.00

5953,~~030~~439,~~995~~341.6589

~~196~~178,~~769~~131.9914

1,~~346~~584,~~671~~880.3241

1,~~543~~763,~~441~~011.3155

0.00

5751,~~684~~854,~~324~~461.3348

A-6

Z,SUP,AD

12,845,000.00

0.00

A-7

AD,TAC,AS

50,000,000.00

3633,~~894~~399,~~372~~588.2969

~~107~~97,~~608~~415.5947

~~841~~990,~~669~~550.5825

~~949~~1,~~278~~087,965.1772

0.00

3632,~~052~~409,~~702~~038.7144

A-8

IO,NTL

0.00

1513,~~372~~916.6650

0.00

1513,~~372~~916.6650

0.00

PO,RSTP

112,246.00

9287,~~960~~045.7143

0.00

12,~~152~~822.2599

0.00

9184,~~808~~222.4644

A-X

IO,CSTR,NTL

0.00

3731,~~084~~057.1727

0.00

3731,~~084~~057.1727

0.00

R,AS

100.00

0.00

0.0500

0.00

0.0500

0.00

B-1

SUB,NAS

7,585,000.00

7,~~195~~078,~~044~~631.4003

32,~~977~~443.2973

78,~~999~~092.6109

40,~~976~~535.9082

0.00

7,~~187~~070,~~044~~538.7994

B-2

SUB,NAS

2,275,500.00

2,~~158~~123,~~513~~589.3231

9,~~893~~733.1912

2,~~399~~427.8863

12,~~293~~160.0775

0.00

2,~~156~~121,~~113~~161.4468

B-3

SUB,NAS

1,517,000.00

1,~~439~~415,~~008~~726.8821

6,~~595~~488.4675

1,~~599~~618.9242

8,~~195~~107.3817

0.00

1,~~437~~414,~~408~~107.9679

B-4

SUB,NAS

758,500.00

~~719~~707,~~504~~863.4309

3,~~297~~244.7338

~~799~~809.9621

4,~~097~~053.6959

0.00

~~718~~707,~~704~~053.4788

B-5

SUB,NAS

303,400.00

~~287~~283,~~801~~145.7724

1,~~319~~297.0975

~~319~~323.9869

1,~~639~~621.0744

0.00

~~287~~282,~~481~~821.7955

B-6

SUB,NAS

1,213,601.00

1943,~~151,208~~249.9527

54,~~276~~323.3723

1,~~279~~078.9427

65,~~556~~401.3150

0306.0013

0.00

1941,~~149,929~~864.0187

SUB

100.00

013,873.0047

0.00

013,873.0047

0.00

100.00

Total

303,398,127.00

~~209~~191,~~507~~073,~~064~~829.0359

~~985~~908,~~697~~935.6051

45,~~368~~140,~~079~~705.0547

56,~~353~~049,~~776~~640.6598

0306.0013

11,~~200~~350.8291

~~205~~185,~~150~~944,~~185~~168.8090

Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face-

Orig. Principal

Prior

Current

Period

(with Notional)

Principal

Total

Principal

Class

Starting

Ending

Method

Cusip

Balance

Interest

Principal

Distribution

Balance

(1)

(2)

(3)

(4)=(2)+(3)

(5)

A-1

1204/01/0405

1204/30/0405

F-30/360

45660NSW6

35,000,000.00

~~671~~607.~~534656~~924187

2.~~238449~~026414

1518.~~319689~~029547

1720.~~558137~~055961

~~656~~589.~~214967~~894640

A-2

1204/01/0405

1204/30/0405

F-30/360

45660NSX4

3,175,425.00

1,~~058~~072.~~203258~~383338

0.000000

1,~~061~~075.~~730603~~957949

A-3

1204/25/0405

0105/24/05

A-30/360

45660NSY2

108,612,255.00

~~678~~616.~~317521~~071640

1.~~677423~~832813

1417.~~989078~~650571

1619.~~666500~~483384

~~663~~598.~~328444~~421068

A-4

1204/25/0405

0105/24/05

A-30/360

45660NSZ9

108,612,255.00

~~678~~616.~~317521~~071640

2.~~844694~~274331

0.000000

2.~~844694~~274331

~~663~~598.~~328444~~421068

A-5

1204/01/0405

1204/30/0405

F-30/360

45660NTA3

80,000,000.00

~~737~~667.~~887446~~991774

2.~~459625~~226639

1619.~~833392~~811005

1922.~~293016~~037644

~~721~~648.~~054054~~180769

A-6

1204/01/0405

1204/30/0405

F-30/360

45660NTB1

12,845,000.00

0.000000

A-7

1204/01/0405

1204/30/0405

F-30/360

45660NTC9

50,000,000.00

~~737~~667.~~887446~~991774

21.~~152172~~948309

1619.~~833392~~811005

1821.~~985563~~759314

~~721~~648.~~054054~~180769

A-8

1204/01/0405

1204/30/0405

F-30/360

45660NTD7

50,000,000.00

~~737~~667.~~887446~~991774

0.~~307453~~278330

0.000000

0.~~307453~~278330

~~721~~648.~~054054~~180769

1204/01/0405

1204/30/0405

F-30/360

45660NTE5

112,246.00

~~828~~775.~~187285~~488035

0.000000

1025.~~265399~~150028

~~817~~750.~~921886~~338008

A-X

1204/01/0405

1204/30/0405

A-30/360

45660NTF2

221,083,608.00

~~639~~575.~~286532~~530754

0.~~167738~~140477

0.000000

0.~~167738~~140477

~~623~~561.~~401621~~692224

1204/01/0405

1204/30/0405

45660NTG0

100.00

0.000000

0.~~500000~~000000

0.000000

0.~~500000~~000000

0.000000

B-1

1204/01/0405

1204/30/0405

F-30/360

45660NTH8

7,585,000.00

~~948~~933.~~588583~~240742

4.~~347698~~277354

1.~~054662~~066854

5.~~402360~~344208

~~947~~932.~~533921~~173888

B-2

1204/01/0405

1204/30/0405

F-30/360

45660NTJ4

2,275,500.00

~~948~~933.~~588583~~240743

4.~~347699~~277354

1.~~054661~~066856

5.~~402360~~344210

~~947~~932.~~533922~~173887

B-3

1204/01/0405

1204/30/0405

F-30/360

45660NTK1

1,517,000.00

~~948~~933.~~588583~~240745

4.~~347699~~277357

1.~~054661~~066856

5.~~402360~~344212

~~947~~932.~~533922~~173889

B-4

1204/01/0405

1204/30/0405

F-30/360

758,500.00

~~948~~933.~~588570~~240725

4.~~347699~~277363

1.~~054661~~066856

5.~~402360~~344219

~~947~~932.~~533909~~173869

B-5

1204/01/0405

1204/30/0405

F-30/360

303,400.00

~~948~~933.~~588563~~240738

4.~~347693~~277357

1.~~054647~~066875

5.~~402340~~344232

~~947~~932.~~533916~~173863

B-6

1204/01/0405

1204/30/0405

F-30/360

1,213,601.00

~~948~~777.~~589322~~231784

43.~~347697~~562316

10.~~054663~~888488

54.~~402360~~450804

~~947~~776.~~534659~~091046

1204/01/0405

1204/30/0405

100.00

1,000.000000

0138,734.~~000000~~700000

0.000000

0138,734.~~000000~~700000

1,000.000000

Page 2 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Distribution to Date - Senior Certificates

Current

Original

Unscheduled

Scheduled

Total

Realized

Deferred

Principal

Class

Face Value

Interest

Principal

Distribution

Loss

Interest

Balance

(1)

(2)

(3)

(4)

(5)=(3)+(4)

(6)=(2)+(5)

(7)

(8)

(9)=(1)-(5)-(7)+(8)

A-1

35,000,000.00

12,~~817~~112,~~395~~398.8574

1012,~~397~~340,~~652~~408.1704

12,~~634~~013,~~823~~279.9856

1214,~~032~~353,~~476~~687.1560

1316,~~849~~466,~~872~~086.0034

0.00

2220,~~967~~646,~~523~~312.8540

A-2

3,175,425.00

0.00

~~196~~241,~~020~~198.9077

3,~~371~~416,~~445~~623.9077

A-3

108,612,255.00

23,~~666~~432,~~664~~699.5659

3137,~~599~~499,~~444~~599.0637

46,~~967~~116,~~212~~793.8597

3643,~~566~~616,~~656~~393.9134

3947,~~233~~049,~~321~~092.4793

0.00

7264,~~045~~995,~~598~~861.0966

A-4

0.00

89,~~650~~737,~~209~~180.7094

0.00

89,~~650~~737,~~209~~180.7094

0.00

A-5

80,000,000.00

45,~~263~~004,~~322~~239.3394

1924,~~216~~095,~~476~~825.9573

34,~~099~~049,~~198~~712.7178

2228,~~315~~145,~~675~~538.6651

2633,~~578~~149,~~997~~778.9945

0.00

5751,~~684~~854,~~324~~461.3348

A-6

12,845,000.00

0.00

11,630,448.77

1,703,964.24

13,334,413.01

0.00

489,413.01

0.00

A-7

50,000,000.00

2,~~331~~736,~~504~~693.4173

1215,~~010~~059,~~298~~891.1108

12,~~936~~531,~~999~~070.1948

1317,~~947~~590,~~297~~961.3057

1620,~~278~~327,~~801~~655.7130

0.00

3632,~~052~~409,~~702~~038.7144

A-8

0.00

~~333~~390,~~072~~956.0727

0.00

~~333~~390,~~072~~956.0727

0.00

112,246.00

0.00

1724,~~759~~927.9741

23,~~677~~096.5614

2028,~~437~~023.5355

0.00

9184,~~808~~222.4644

A-X

0.00

1,~~042~~177,~~651~~225.1115

0.00

1,~~042~~177,~~651~~225.1115

0.00

100.00

0.1231

34.70

65.30

100.00

100.1231

0.00

B-1

7,585,000.00

~~612~~742,~~055~~707.8949

0.04

~~397~~514,~~955~~461.1803

~~397~~514,~~955~~461.2207

1,~~010~~257,~~011~~168.1156

0.00

7,~~187~~070,~~044~~538.7994

B-2

2,275,500.00

~~183~~222,~~616~~812.8028

0.0102

~~119~~154,~~386~~338.5631

~~119~~154,~~386~~338.5733

~~303~~377,~~003~~150.3761

0.00

2,~~156~~121,~~113~~161.4468

B-3

1,517,000.00

~~122~~148,~~411~~541.1951

0.00

79102,~~591~~892.0421

~~202~~251,~~002~~433.2372

0.00

1,~~437~~414,~~408~~107.9679

B-4

758,500.00

6174,~~205~~270.5875

0.00

3951,~~795~~446.5312

~~101~~125,~~001~~716.1187

0.00

~~718~~707,~~704~~053.4788

B-5

303,400.00

2429,~~482~~708.2430

0.00

1520,~~918~~578.2145

4050,~~400~~286.4575

0.00

~~287~~282,~~481~~821.7955

B-6

1,213,601.00

97117,~~929~~965.0960

0.00

6382,~~671~~096.9242

~~161~~200,~~601~~062.0102

0189,639.0064

0.00

1941,~~149,929~~864.0187

100.00

~~137~~162,~~907~~800.0821

0.00

~~137~~162,~~907~~800.0821

0.00

100.00

Total

303,398,127.00

2226,~~344~~090,~~428~~200.0281

84100,~~872~~651,~~114~~135.7816

1417,~~061~~343,~~260~~795.2701

98117,~~933~~994,~~375~~930.0518

~~121~~144,~~277~~085,~~803~~130.0799

0189,639.0064

~~685~~730,~~433~~611.9178

~~205~~185,~~150~~944,~~185~~168.8090

Interest Detail - Senior Certificates

Pass

Prior Principal

Non-

Prior

Unscheduled

Paid or

Current

Through

(with Notional)

Accrued

Supported

Unpaid

Interest

Optimal

Deferred

Unpaid

Class

Rate

Balance

Interest

Interest SF

Interest

Adjustment

Interest

(1)

(2)

(3)

(4)

(5)=(1)-(2)+(3)+(4)

(6)

(7)=(5)-(6)

A-1

4.00000%

2321,~~503~~277,~~712~~346.9556

7870,~~345~~924.7149

0.00

7870,~~345~~924.7149

0.00

A-2

4.00000%

3,~~360~~405,~~245~~272.0886

11,~~200~~350.8291

0.00

11,~~200~~350.8291

0.00

A-3

23.~~96750~~57000%

7366,~~673~~912,~~595~~930.6001

~~182~~199,~~188~~065.6697

0.00

~~182~~199,~~188~~065.6697

0.00

A-4

54.~~03250~~43000%

7366,~~673~~912,~~595~~930.6001

~~308~~247,~~968~~020.6423

0.00

~~308~~247,~~968~~020.6423

~~308~~247,~~968~~020.6424

0.00

A-5

4.00000%

5953,~~030~~439,~~995~~341.6589

~~196~~178,~~769~~131.9914

0.00

~~196~~178,~~769~~131.9914

0.00

A-6

0.00000%

0.00

A-7

3.50000%

3633,~~894~~399,~~372~~588.2969

~~107~~97,~~608~~415.5947

0.00

~~107~~97,~~608~~415.5947

0.00

A-8

0.50000%

3633,~~894~~399,~~372~~588.2969

1513,~~372~~916.6650

0.00

1513,~~372~~916.6650

0.00

0.00000%

9287,~~960~~045.7143

0.00

A-X

0.~~31486~~29290%

~~141~~127,~~335~~240,~~773~~415.0057

3731,~~084~~057.1727

0.00

3731,~~084~~057.1727

0.00

0.00000%

0.00

0.0500

0.00

B-1

5.50000%

7,~~195~~078,~~044~~631.4003

32,~~977~~443.2973

0.00

32,~~977~~443.2973

0.00

B-2

5.50000%

2,~~158~~123,~~513~~589.3231

9,~~893~~733.1912

0.00

9,~~893~~733.1912

0.00

B-3

5.50000%

1,~~439~~415,~~008~~726.8821

6,~~595~~488.4675

0.00

6,~~595~~488.4675

0.00

B-4

5.50000%

~~719~~707,~~504~~863.4309

3,~~297~~244.7337

0.00

3,~~297~~244.7337

3,~~297~~244.7338

0.00

B-5

5.50000%

~~287~~283,~~801~~145.7724

1,~~319~~297.0975

0.00

1,~~319~~297.0975

0.00

B-6

5.50000%

1943,~~151,208~~249.9527

54,~~276~~323.3723

0.00

54,~~276~~323.3723

0.00

0166,481.~~00000~~64000%

100.00

0.00

013,873.0047

0.00

Total

~~461~~418,~~410~~626,~~804~~763.9286

~~996~~906,~~898~~412.3793

0.00

~~996~~906,~~898~~412.3793

~~996~~920,~~898~~286.42

0.00

Page 3 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Collection Account Report

SUMMARY

Total

Principal Collections

45,~~356~~129,~~878~~354.2555

Principal Withrawals

0.00

Principal Other Accounts

0.00

TOTAL NET PRINCIPAL

45,~~356~~129,~~878~~354.2555

Interest Collections

1916,~~009,100~~810.9844

Interest Withdrawals

-0.00

Interest Other Accounts

013,873.0046

Interest Fees

-1210,~~202~~397.5849

TOTAL NET INTEREST

~~996~~920,~~898~~286.4041

TOTAL AVAILABLE FUNDS FOR DISTRIBUTION

56,~~353~~049,~~776~~640.6596

PRINCIPAL - COLLECTIONS

Total

Scheduled Principal Received

~~232~~218,~~939~~432.2335

Curtailments

2714,~~359~~418.3784

Prepayments In Full

4,~~096~~896,~~579~~809.6549

Repurchased/Substitutions

0.00

Liquidations

0.00

Insurance Principal

0.00

Other Additional Principal

0.00

Delinquent Principal

-~~188~~181,~~264~~556.8736

Realized Losses

-0306.0013

Advanced Principal

~~188~~181,~~264~~556.8736

TOTAL PRINCIPAL COLLECTED

45,~~356~~129,~~878~~354.2555

PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK

PRINCIPAL - OTHER ACCOUNTS

Total

TOTAL PRINCIPAL OTHER ACCOUNTS

0.00

Page 4 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

INTEREST - COLLECTIONS

Total

Scheduled Interest

1954,~~050,099~~836.6956

Repurchased/Substitution Interest

0.00

Liquidation Interest

0.00

Insurance Interest

0.00

Other Additional Interest

0.00

Prepayment Interest Shortfalls

-4,~~038~~023.2196

Delinquent Interest

-~~833~~771,~~238~~411.9704

Compensating Interest

4,~~038~~023.2196

Civil Relief Act Shortfalls

-0.00

Interest Advanced

~~792~~733,~~240~~384.2591

TOTAL INTEREST COLLECTED

1916,~~009,100~~810.9844

INTEREST - WITHDRAWALS

Total

TOTAL INTEREST WITHDRAWALS

0.00

INTEREST - OTHER ACCOUNTS

Total

Prepayment Charges

013,873.0046

TOTAL INTEREST OTHER ACCOUNTS

013,873.0046

INTEREST - FEES

Total

Current Servicing Fees

109,~~893~~203.1627

Trustee Fees

1,~~309~~194.4222

REMIC Tax Filing Fees

0.00

TOTAL INTEREST FEES

1210,~~202~~397.5849

Page 5 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Credit Enhancement Report

ACCOUNTS

SPACE INTENTIONALLY LEFT BLANK

INSURANCE

SPACE INTENTIONALLY LEFT BLANK

STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK

Page 6 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Collateral Report

COLLATERAL

Total

Loan Count:

Original

810

Prior

~~572~~521

Prefunding

Scheduled Paid Offs

-0

Full Voluntary Prepayments

-1316

Repurchases

-0

Liquidations

-0

Current

~~559~~505

Principal Balance:

Original

303,250,183.98

Prior

~~209~~191,~~506~~073,~~964~~729.0759

Prefunding

0.00

Scheduled Principal

-~~232~~218,~~939~~432.2335

Partial Prepayments

-2714,~~359~~418.3784

Full Voluntary Prepayments

-4,~~096~~896,~~579~~809.6549

Repurchases

-0.00

Liquidations

-0.00

Current

~~205~~185,~~150~~944,~~085~~068.8291

PREFUNDING

SPACE INTENTIONALLY LEFT BLANK

Page 7 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

CHARACTERISTICS

Total

Weighted Average Coupon Original

6.10169%

Weighted Average Coupon Prior

6.~~01681~~00274%

Weighted Average Coupon Current

65.~~01469~~99666%

Weighted Average Months to Maturity Original

358

Weighted Average Months to Maturity Prior

~~340~~335

Weighted Average Months to Maturity Current

~~339~~334

Weighted Avg Remaining Amortization Term Original

358

Weighted Avg Remaining Amortization Term Prior

~~340~~335

Weighted Avg Remaining Amortization Term Current

~~339~~334

Weighted Average Seasoning Original

1.15

Weighted Average Seasoning Prior

1721.11

Weighted Average Seasoning Current

1822.11

Page 8 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

ARM CHARACTERISTICS

Total

Weighted Average Margin Original

0.00000%

Weighted Average Margin Prior

0.00000%

Weighted Average Margin Current

0.00000%

Weighted Average Max Rate Original

0.00000%

Weighted Average Max Rate Prior

0.00000%

Weighted Average Max Rate Current

0.00000%

Weighted Average Min Rate Original

0.00000%

Weighted Average Min Rate Prior

0.00000%

Weighted Average Min Rate Current

0.00000%

Weighted Average Cap Up Original

0.00000%

Weighted Average Cap Up Prior

0.00000%

Weighted Average Cap Up Current

0.00000%

Weighted Average Cap Down Original

0.00000%

Weighted Average Cap Down Prior

0.00000%

Weighted Average Cap Down Current

0.00000%

SERVICING FEES & ADVANCES

Total

Current Servicing Fees

109,~~893~~203.1627

Delinquent Servicing Fees

4038,~~998~~026.7113

TOTAL SERVICING FEES

5147,~~891~~229.8739

Total Servicing Fees

5147,~~891~~229.8739

Compensating Interest

-4,~~038~~023.2196

Delinquent Servicing Fees

-4038,~~998~~026.7113

COLLECTED SERVICING FEES

65,~~854~~179.9429

Total Advaced Interest

~~792~~733,~~240~~384.2591

Total Advaced Principal

~~188~~181,~~264~~556.8736

Aggregate Advances with respect to this Distribution

~~980~~914,~~505~~941.1227

ADDITIONAL COLLATERAL INFORMATION

Total

Prepayment Interest Shortfall (PPIS)

4,~~038~~023.2196

Compensating Interest

-4,~~038~~023.2196

Net Prepayment Interest Shortfall (PPIS)

0.00

Weighted Average Net Mortgage Rate

5.~~709968~~692544%

Page 9 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Delinquency Report

TOTAL

< 1 PAYMENT

1 PAYMENT

2 PAYMENTS

3+ PAYMENTS

TOTAL

DELINQUENT

Balance

21,~~412~~131,~~903~~627.2531

01,270,702.0052

~~655~~529,~~777~~436.16

32,~~068~~931,~~680~~765.4199

% Balance

10.1861%

0.0068%

0.3228%

1.5058%

# Loans

% # Loans

10.2579%

0.0059%

0.3640%

1.6178%

FORECLOSURE

Balance

0187,481.0049

0.00

0187,481.0049

% Balance

0.10%

0.00%

0.10%

# Loans

% # Loans

0.20%

0.00%

0.20%

BANKRUPTCY

Balance

114,220.52

460,651.43

0.00

574,871.95

% Balance

0.06%

0.25%

0.00%

0.31%

# Loans

% # Loans

0.20%

0.00%

0.40%

REO

Balance

0.00

% Balance

0.00%

# Loans

% # Loans

0.00%

BANKRUPTCY

Balance

0.00

TOTAL

Balance

301,702.01

1,592,278.74

1,270,702.52

529,436.16

3,694,119.43

% Balance

0.0016%

0.0086%

0.0068%

0.0028%

01.0099%

# Loans

012

% # Loans

0.0040%

0.0099%

0.0059%

0.0040%

02.0038%

REO

Balance

0.00

325,221.66

% Balance

0.00%

0.16%

# Loans

% # Loans

0.00%

0.18%

TOTAL

Balance

0.00

2,412,903.25

0.00

980,998.82

3,393,902.07

% Balance

0.00%

1.18%

0.00%

0.48%

1.65%

# Loans

% # Loans

0.00%

1.25%

0.00%

0.54%

1.79%

Page 10 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

REO Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

2721075 1

TOTAL

330,600.00

325,221.66

###############

6.875%

GA - 95.00%

360

01-Aug-2003

TOTAL

330,600.00

325,221.66

Page 11 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Foreclosure Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

TOTAL

2274671 1

191,500.00

187,481.49

01-Apr-2005

7.250%

AZ - 89.91%

360

01-May-2003

TOTAL

191,500.00

187,481.49

Page 12 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Prepayment Report

VOLUNTARY PREPAYMENTS

Total

Current

Number of Paid in Full Loans

1316

Number of Repurchased Loans

Total Number of Loans Prepaid in Full

1316

Curtailments Amount

2714,~~359~~418.3784

Paid in Full Balance

4,~~096~~896,~~579~~809.6549

Repurchased Loans Balance

0.00

Total Prepayment Amount

4,~~123~~911,~~939~~228.0233

Cumulative

Number of Paid in Full Loans

~~218~~265

Number of Repurchased Loans

3339

Total Number of Loans Prepaid in Full

~~251~~304

Paid in Full Balance

8398,~~288~~740,~~504~~731.0859

Repurchased Loans Balance

911,~~041~~419,~~828~~822.1154

Curtailments Amount

~~846~~1,~~630~~000,355.7907

Total Prepayment Amount

93111,~~176~~160,~~962~~909.9820

Page 13 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES

Total

SMM

12.9757%

3 Months Avg SMM

2.3147%

12 Months Avg SMM

2.7253%

Avg SMM Since Cut-off

2.0510%

CPR

2126.2586%

3 Months Avg CPR

2425.4694%

12 Months Avg CPR

2826.1651%

Avg CPR Since Cut-off

2122.9744%

PSA

~~586~~607.5536%

3 Months Avg PSA Approximation

~~714~~614.6626%

12 Months Avg PSA Approximation

~~1,116~~798.1114%

Avg PSA Since Cut-off Approximation

~~1,141~~965.7865%

Page 14 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

PREPAYMENT CALCULATION METHODOLOGY

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidations )/(Beg Principal Balance - Sched Principal)

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidations )/(Beg Principal Balance - Sched Principal) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) PSA Standard Prepayment Model: CPR/(0.002*min(30,WAS)) Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn)*(1-SMMn+1)*...*(1-SMMm)]^(1/months in period n,m) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*Avg WASn,m)) Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m) Weighted Average Seasoning (WAS) Dates correspond to distribution dates. Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.

Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)

PSA Standard Prepayment Model: CPR/(0.002*min(30,WAS))

Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn)*(1-SMMn+1)*...*(1-SMMm)]^(1/months in period n,m)

Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)

Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*Avg WASn,m))

Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m)

Weighted Average Seasoning (WAS)

Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.

Dates correspond to distribution dates.

Page 15 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Prepayment Detail Report

Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution

Loan Number

Original

Current

State &

Type Prepayment

First

Loan

Principal

Prepayment

Note

LTV at

Payment

Loan Group

Status

Balance

Amount

Date

Rate

Origination

Original Term

Date

2231650 1

158,270.00

155,652.12

16-Dec-2004

7.250%

CA - 95.00%

Paid Off - 360

05/01/2003

2154315 1

128,700.00

125,638.43

03-May-2005

6.250%

CA - 90.00%

Paid Off - 360

01-Jun-2003

2293149 1

170,100.00

166,170.09

29-Dec-2004

6.500%

NJ - 89.57%

Paid Off - 360

01/01/2003

2155185 1

433,000.00

423,227.67

12-May-2005

6.125%

CA - 79.45%

Paid Off - 360

01-Jul-2003

2369140 1

550,000.00

540,748.99

27-Dec-2004

6.250%

NJ - 67.07%

Paid Off - 360

08/01/2003

2213827 1

151,000.00

147,829.30

22-Apr-2005

6.250%

CA - 59.22%

Paid Off - 360

01-Aug-2003

2388433 1

357,600.00

351,585.18

12-Jan-2005

6.250%

NY - 78.42%

Paid Off - 360

08/01/2003

2235637 1

378,000.00

370,421.50

29-Apr-2005

6.500%

NY - 84.00%

Paid Off - 360

01-Aug-2003

2574060 1

600,000.00

589,608.58

14-Dec-2004

5.750%

CA - 35.29%

Paid Off - 360

09/01/2003

2408775 1

400,000.00

390,274.67

29-Apr-2005

5.750%

CA - 67.23%

Paid Off - 360

01-Aug-2003

2604050 1

126,000.00

123,728.41

30-Dec-2004

5.875%

CA - 61.16%

Paid Off - 360

08/01/2003

2418506 1

450,000.00

436,881.02

12-May-2005

5.875%

FL - 63.83%

Paid Off - 360

01-Aug-2003

2623902 1

637,500.00

623,724.02

30-Dec-2004

5.875%

CA - 75.00%

Paid Off - 360

08/01/2003

2455493 1

473,000.00

462,116.99

03-May-2005

5.750%

MA - 68.80%

Paid Off - 360

01-Aug-2003

2628988 1

385,000.00

378,059.21

09-Dec-2004

5.875%

CA - 77.00%

Paid Off - 360

08/01/2003

2469722 1

193,000.00

188,943.05

12-May-2005

6.000%

NY - 50.13%

Paid Off - 360

01-Sep-2003

2648756 1

167,100.00

163,058.42

12-Jan-2005

5.750%

CA - 43.97%

Paid Off - 360

09/01/2003

2587346 1

450,000.00

439,646.15

26-Apr-2005

5.750%

CA - 47.87%

Paid Off - 360

01-Aug-2003

2659003 1

335,000.00

328,960.64

27-Dec-2004

5.875%

CA - 69.07%

Paid Off - 360

08/01/2003

2591285 1

393,000.00

384,409.18

22-Apr-2005

5.750%

CA - 71.45%

Paid Off - 360

01-Sep-2003

2686972 1

65,000.00

63,846.04

10-Jan-2005

6.375%

NY - 15.29%

Paid Off - 360

07/01/2003

2593718 1

139,000.00

135,944.02

19-Apr-2005

6.000%

CA - 61.78%

Paid Off - 360

01-Aug-2003

2723590 1

488,000.00

480,294.91

06-Jan-2005

6.250%

TX - 80.00%

Paid Off - 360

09/01/2003

2601197 1

155,000.00

151,762.91

19-Apr-2005

6.000%

NY - 44.86%

Paid Off - 360

01-Sep-2003

4040597 1

136,000.00

131,143.04

29-Dec-2004

6.125%

NJ - 61.82%

Paid Off - 360

09/01/2003

2648253 1

138,000.00

134,818.67

03-May-2005

5.875%

CA - 48.68%

Paid Off - 360

01-Aug-2003

TOTAL

4,175,570.00

4,096,579.65

2659543 1

445,500.00

432,749.35

18-Apr-2005

6.500%

NJ - 90.00%

Paid Off - 360

01-Aug-2003

2664366 1

320,000.00

312,637.35

22-Apr-2005

5.750%

CA - 39.02%

Paid Off - 360

01-Aug-2003

2693831 1

367,000.00

359,509.23

18-Apr-2005

6.125%

NJ - 69.25%

Paid Off - 360

01-Sep-2003

TOTAL

5,014,200.00

4,896,809.49

Page 16 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Realized Loss Report

COLLATERAL REALIZED LOSSES

Total

Current

Number of Loans Liquidated

Collateral Principal Realized Loss/(Gain) Amount

0306.0013

Collateral Interest Realized Loss/(Gain) Amount

0.00

Net Liquidation Proceeds

0(306.0013)

Cumulative

Number of Loans Liquidated

Collateral Realized Loss/(Gain) Amount

0189,639.0065

Net Liquidation Proceeds

0134,963.0012

Special Hazard Loss Coverage Amt

4,066,039.36

Fraud Loss Coverage Amt

2,503,076.42

Bankrupt Loss Coverage Amt

100,000.00

Class B-1 Writedown Amount

0.00

Class B-2 Writedown Amount

0.00

Class B-3 Writedown Amount

0.00

Class B-4 Writedown Amount

0.00

Class B-5 Writedown Amount

0.00

Class B-6 Writedown Amount

0.00

Page 17 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

DEFAULT SPEEDS

Total

MDR

0.00%

3 Months Avg MDR

0.0006%

12 Months Avg MDR

0.0001%

Avg MDR Since Cut-off

0.0001%

CDR

0.00%

3 Months Avg CDR

0.0066%

12 Months Avg CDR

0.0017%

Avg CDR Since Cut-off

0.0009%

SDA

0.00%

3 Months Avg SDA Approximation

01.0057%

12 Months Avg SDA Approximation

0.0050%

Avg SDA Since Cut-off Approximation

0.0039%

Loss Severity Approximation for Current Period

0.00%

3 Months Avg Loss Severity Approximation

019.0044%

12 Months Avg Loss Severity Approximation

04.0086%

Avg Loss Severity Approximation Since Cut-off

02.0065%

Page 18 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY

Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)

Conditional Default Rate (CDR): 1-((1-MDR)^12)

SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)*0.02,MAX(0.03,MIN(30,WAS)*0.02-0.0095*(WAS-60)))

Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn)*(1-MDRn+1)*...*(1-MDRm)]^(1/months in period n,m)

Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)

Average SDA Approximation over period between the nth month and mth month:

AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)*0.02,MAX(0.03,MIN(30,Avg WASn,m)*0.02-0.0095*(Avg WASn,m-60)))

Average WASn,m: (WASn + WASn+1 +...+ WASm )/(number of months in the period n,m)

Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)

Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.

Dates correspond to distribution dates.

Page 19 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Realized Loss Detail Report

Loan Number

Current

State &

Prior

Realized

Cumulative

Loan

Note

LTV at

Original

Principal

Loss/(Gain)

Realized

Loan Group

Status

Rate

Origination

Term

Balance

Revision

Loss/(Gain)

TOTAL

2721075 1

GA - 95.00%

360

Revision

306.13

TOTAL

306.13

Page 20 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Triggers and Adj. Cert. Report

TRIGGER EVENTS

Total

~~Has Optional Termination Date Reached (0=No,1=Yes)~~

Has Optional Termination Date Reached (0=No,1=Yes)

Has Sr. Prepay Stepdown Condition Occurred (0=No,1=Yes)

Has Sr. Prepay Stepdown Condition Occurred

Has Sr. Credit Supp. Depletion Date Occured (0=No,1=Yes)

Has Sr. Credit Supp. Depletion Date Occured

Has Special Haz. Cov. Term Date Occured (0=No,1=Yes)

Has Special Haz. Cov. Term Date Occured

Has Fraud Loss Coverage Term Date Occured (0=No,1=Yes)

Has Fraud Loss Coverage Term Date Occured

~~Has BK Loss Cov. Term Date Occured (0=No,1=Yes)~~

Has BK Loss Cov. Term Date Occured (0=No,1=Yes)

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

ADDITIONAL INFORMATION

Total

Current Senior Percentage

93.~~815561~~427707%

Next Senior Percentage

93.~~691217~~254299%

Current Subordinate Percentage

6.~~184439~~572293%

Next Subordinate Percentage

6.~~308783~~745701%

Senior Prepayment Percentage

100.000000%

Next Senior Prepayment Percentage

100.000000%

Subordinate Prepayment Percentage

0.000000%

Next Subordinate Prepayment Percentage

0.000000%

Current LIBOR Rate

23.~~417500~~020000%

Next LIBOR Rate

23.~~530000~~090000%

Page 21 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

January 25, 2005 Distribution

May 25, 2005 Distribution

Other Related Information

ADDITIONAL INFORMATION

Total

Current Scheduled Payments

1,~~283~~173,~~038~~268.92

Current Scheduled Payments 1 Month Prior

1,~~302~~198,~~824~~060.6006

Current Scheduled Payments 2 Month Prior

1,~~337~~223,~~034~~823.3591

Current Scheduled Payments 3 Month Prior

1,~~393~~254,~~745~~105.5461

Current Scheduled Payments 4 Month Prior

1,~~444~~283,~~570~~038.3592

Current Scheduled Payments 5 Month Prior

1,~~478~~302,~~004~~824.6660

Current Scheduled Payments 6 Month Prior

1,~~522~~337,~~834~~034.7635

Current Scheduled Payments 7 Month Prior

1,~~561~~393,~~388~~745.5754

Current Scheduled Payments 8 Month Prior

1,~~623~~444,~~366~~570.2835

Current Scheduled Payments 9 Month Prior

1,~~685~~478,~~238~~004.8366

Current Scheduled Payments 10 Month Prior

1,~~728~~522,~~790~~834.5576

Current Scheduled Payments 11 Month Prior

1,~~763~~561,~~315~~388.9457

Delinquent 60+ Scheduled Payments

616,~~526~~141.0749

Delinq. 60+ Sched. Pmnts, 1 Month Prior

911,~~143~~970.2807

Delinq. 60+ Sched. Pmnts, 2 Month Prior

613,~~095~~345.3999

Delinq. 60+ Sched. Pmnts, 3 Month Prior

215,~~171~~963.8118

Delinq. 60+ Sched. Pmnts, 4 Month Prior

76,~~159~~526.4807

Delinq. 60+ Sched. Pmnts, 5 Month Prior

59,~~951~~143.1528

Delinq. 60+ Sched. Pmnts, 6 Month Prior

6,~~912~~095.3239

Delinq. 60+ Sched. Pmnts, 7 Month Prior

32,~~292~~171.4281

Delinq. 60+ Sched. Pmnts, 8 Month Prior

27,~~171~~159.8148

Delinq. 60+ Sched. Pmnts, 9 Month Prior

125,~~431~~951.0415

Delinq. 60+ Sched. Pmnts, 10 Month Prior

136,~~762~~912.0032

Delinq. 60+ Sched. Pmnts, 11 Month Prior

153,~~085~~292.7242

Page 22 of 22

Filing Compare · INDYMAC MBS INC RESIDENTIAL ASSET SEC TRUST 2004 R1