

                           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):  June 11, 2003


                                IMPAC CMB TRUST SERIES 2003-4.
              (as Company under a Series 2003-4 Indenture, dated as of
           March 31,2003 providing for, inter alia, the issuance of
               Collateralized Asset Backed Bonds, Series 2003-4).


                  IMPAC CMB TRUST COLLATERLIZED AS BOND SERIES 2003-4
                 (Exact name of Registrant as specified in its Charter)


                                       California
                    (State or Other Jurisdiction of Incorporation)

               333-103591-01                          33-0705301
          (Commission File Number)        (I.R.S. Employer Identification No.)


          1401 DOVE STREET
          NEWPORT BEACH, CALIFORNIA                    92660
          (Address of principal executive offices)     (Zip Code)


          Registrant's Telephone Number, Including Area Code:  (949) 475-3600


     Item 5.  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 7.  Financial Statement and Exhibits

     Exhibits:  (as noted in Item 5 above)

     Monthly Remittance Statement to the Certificateholders dated as of
     June 11, 2003..



                                     SIGNATURE


               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,
                                  not in its individual capacity, but solely as
                                  a duly authorized agent of the Registrant
                                  pursuant to the Indenture, dated as of
                                  March 31,2003.



          Date:  Jun 17, 2003               By:  /s/ David Co
                                            David Co
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          Monthly Remittance Statement to the Certificateholders
          dated as of June 11, 2003.


	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates


	June 11, 2003 Distribution - SUPPLEMENTAL


	Contents



			TABLE OF CONTENTS

								Page

			1.	Contents				1
			2.	Certificate Payment Report				2
			3.	Collection Account Report				4
			4.	Collateral Report				7













				Total Number of Pages				9



			CONTACTS

				Administrator: James Noriega
				Direct Phone Number: (714)247-6281
				Address: Deutsche Bank
				1761 E. St. Andrew Place, Santa Ana, CA 92705

				Web Site: https://www.corporatetrust.db.com/invr
				Factor Information: (800) 735-7777
				Main Phone Number: (714) 247-6000



ISSUANCE INFORMATION

	Seller:		Impac Funding Corp.					Cut-Off Date: March 1, 2003
	Certificate Insurer(s):		AMBAC Indemnity Corporation					Closing Date: March 31, 2003
								First Payment Date: April 25, 2003
	Servicer(s):		Impac Funding Corp. Master Servicer
			Wendover Funding, Inc. Sub-Servicer
			Countrywide Home Loans, Inc. Sub-Servicer
			GMAC Sub-Servicer					Distribution Date: June 11, 2003
	Underwriter(s):		Countrywide Funding Corporation Underwriter					Record Date: April 23, 2003
								March 31, 2003






						Page 1 of 9					© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Certificate Payment Report for June 11, 2003 Distribution


	Distribution in Dollars - Current Period
					Prior						Current
	Class	Original			Principal			Total	Realized	Deferred	Principal
Class	Type	Face Value			Balance	Interest	Principal	Distribution	Losses	Interest	Balance
					(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)

1-A-1	FLT, STEP,	253,125,000.00			251,573,685.17	-	-	-	-	-	251,573,685.17
2-A-1	FLT, STEP,	11,217,000.00			11,191,355.79	-	-	-	-	-	11,191,355.79
3-A-1	STEP, AFC	259,500,000.00			257,230,571.50	129,519.29	-	129,519.29	-	-	257,230,571.50
3-A-IO	IO, NTL	-			-	-	-	-	-	-	-
3-M-1	MEZ, STEP,	18,750,000.00			18,586,023.96	17,045.84	-	17,045.84	-	-	18,586,023.96
3-M-2	MEZ, STEP,	15,000,000.00			14,868,819.17	18,661.66	-	18,661.66	-	-	14,868,819.17
1-B-1	SUB, FLT, S	14,850,000.00			14,758,989.53	-	-	-	-	-	14,758,989.53
3-B-1	SUB, STEP,	5,250,000.00			5,204,086.70	9,817.21	-	9,817.21	-	-	5,204,086.70
Cert	R	-			-	-	-	-	-	-	-


Total		577,692,000.00			573,413,531.82	175,044.00	-	175,044.00	-	-	573,413,531.82


	Interest Accrual Detail				Current Period Factor Information per $1,000 of Original Face
						Orig. Principal	Prior				Current
	Period	Period				(with Notional)	Principal			Total	Principal
Class	Starting	Ending		Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
							(1)	(2)	(3)	(4)=(2)+(3)	(5)

1-A-1	04/25/03	06/10/03		A-Act/360	45254NED5	253,125,000.00	993.871349	-	-	-	993.871349
2-A-1	04/25/03	06/10/03		A-Act/360	45254NEF0	11,217,000.00	997.713809	-	-	-	997.713809
3-A-1	04/25/03	06/10/03		A-Act/360	45254NEG8	259,500,000.00	991.254611	0.499111	-	0.499111	991.254611
3-A-IO	04/25/03	06/10/03		A-Act/360	45254NEH6	37,500,695.00	1,000.000000	-	-	-	1,000.000000
3-M-1	04/25/03	06/10/03		A-Act/360	45254NEJ2	18,750,000.00	991.254611	0.909111	-	0.909111	991.254611
3-M-2	04/25/03	06/10/03		A-Act/360	45254NEK9	15,000,000.00	991.254611	1.244111	-	1.244111	991.254611
1-B-1	04/25/03	06/10/03		A-Act/360	45254NEE3	14,850,000.00	993.871349	-	-	-	993.871349
3-B-1	04/25/03	06/10/03		A-Act/360	45254NEL7	5,250,000.00	991.254610	1.869945	-	1.869945	991.254610
Cert	04/25/03	06/10/03		-Act/360		-	-	-	-	-	-


							Page 2 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Certificate Payment Report for June 11, 2003 Distribution


	Distribution in Dollars - to Date
											Current
	Original				Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal
Class	Face Value		Interest		Principal	Principal	Principal	Distribution	Losses	Interest	Balance
	(1)		(2)		(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)

1-A-1	253,125,000.00		655,415.89		1,330,922.32	220,392.51	1,551,314.83	2,206,730.72	-	-	251,573,685.17
2-A-1	11,217,000.00		32,404.23		0.00	25,644.21	25,644.21	58,048.44	-	-	11,191,355.79
3-A-1	259,500,000.00		1,872,271.52		1,794,440.46	474,988.03	2,269,428.49	4,141,700.01	-	-	257,230,571.50
3-A-IO	-		375,006.96		-	-	-	375,006.96	-	-	-
3-M-1	18,750,000.00		150,633.29		136,520.09	27,455.96	163,976.05	314,609.34	-	-	18,586,023.96
3-M-2	15,000,000.00		130,542.60		121,571.25	9,609.58	131,180.84	261,723.44	-	-	14,868,819.17
1-B-1	14,850,000.00		101,454.26		78,080.78	12,929.69	91,010.47	192,464.73	-	-	14,758,989.53
3-B-1	5,250,000.00		51,309.35		36,303.71	9,609.58	45,913.29	97,222.64	-	-	5,204,086.70
Cert	-		1,142,485.29		-	-	-	1,142,485.29	-	-	-


Total	577,692,000.00		4,511,523.39		3,497,838.61	780,629.57	4,278,468.18	8,789,991.57	-	-	573,413,531.82


	Interest Detail
	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	Adjustments	Interest	Interest	Interest
					(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)

1-A-1		251,573,685.17			-	-	-	-	-	-	-
2-A-1		11,191,355.79			-	-	-	-	-	-	-
3-A-1	0.60422%	257,230,571.50			129,519.29	-	-	-	129,519.29	129,519.29	-
3-A-IO		37,500,695.00			-	-	-	-	-	-	-
3-M-1	1.10056%	18,586,023.96			17,045.84	-	-	-	17,045.84	17,045.84	-
3-M-2	1.50610%	14,868,819.17			18,661.66	-	-	-	18,661.66	18,661.66	-
1-B-1		14,758,989.53			-	-	-	-	-	-	-
3-B-1	2.26373%	5,204,086.70			9,817.21	-	-	-	9,817.21	9,817.21	-
Cert		-			-	-	-	-	-	-	-


Total		610,914,226.82			175,044.00	-	-	-	175,044.00	175,044.00	-


							Page 3 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Collection Account Report for June 11, 2003 Distribution


	Collection Account Report


SUMMARY					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Principal Collections				0.00	0.00	0.00	0.00
	Principal Withdrawals				0.00	0.00	0.00	0.00
	Principal Other Accounts				0.00	0.00	0.00	0.00
	TOTAL PRINCIPAL				0.00	0.00	0.00	0.00

	Interest Collections				175,044.00	0.00	0.00	175,044.00
	Interest Withdrawals				0.00	0.00	0.00	0.00
	Interest Other Accounts				0.00	0.00	0.00	0.00
	Interest Fees				0.00	0.00	0.00	0.00
	TOTAL INTEREST				175,044.00	0.00	0.00	175,044.00

	TOTAL AVAILABLE FUNDS TO BONDHOLDERS				175,044.00	0.00	0.00	175,044.00


PRINCIPAL - COLLECTIONS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Scheduled Principal				0.00	0.00	0.00	0.00
	Curtailments				0.00	0.00	0.00	0.00
	Prepayments in Full				0.00	0.00	0.00	0.00
	Repurchases/Substitutions				0.00	0.00	0.00	0.00
	Liquidations				0.00	0.00	0.00	0.00
	Insurance Principal				0.00	0.00	0.00	0.00
	Other Additional Principal				0.00	0.00	0.00	0.00
	Delinquent Principal				0.00	0.00	0.00	0.00
	Realized Losses				0.00	0.00	0.00	0.00
	Substitution Adjustments- Principal				0.00	0.00	0.00	0.00
	Termination Price Amounts- Principal				0.00	0.00	0.00	0.00
	Additional Principal Amts				0.00	0.00	0.00	0.00
	Principal Advanced				0.00	0.00	0.00	0.00

	TOTAL PRINCIPAL				0.00	0.00	0.00	0.00


				Page 4 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Collection Account Report for June 11, 2003 Distribution


	Collection Account Report


PRINCIPAL - WITHDRAWALS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL
SPACE INTENTIONALLY LEFT BLANK


PRINCIPAL - OTHER ACCOUNTS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL
SPACE INTENTIONALLY LEFT BLANK


INTEREST - COLLECTIONS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Scheduled Interest				175,044.00	0.00	0.00	175,044.00
	Repurchases/Substitutions				0.00	0.00	0.00	0.00
	Liquidations				0.00	0.00	0.00	0.00
	Insurance Interest				0.00	0.00	0.00	0.00
	Other Additional Interest				0.00	0.00	0.00	0.00
	Prepayment Interest Shortfalls				0.00	0.00	0.00	0.00
	Relief Act Interest Shortfalls				0.00	0.00	0.00	0.00
	Delinquent Interest				0.00	0.00	0.00	0.00
	Interest Realized Losses				0.00	0.00	0.00	0.00
	Compensating Interest				0.00	0.00	0.00	0.00
	Substitution Adjustments- Interest				0.00	0.00	0.00	0.00
	Termination Price Amounts- Interest				0.00	0.00	0.00	0.00
	Additional Interest Amts				0.00	0.00	0.00	0.00
	Interest Prepayment Premiums				0.00	0.00	0.00	0.00
	Interest Advanced				0.00	0.00	0.00	0.00
	Cap Contract Payment Amt				0.00	0.00	0.00	0.00

	TOTAL INTEREST				175,044.00	0.00	0.00	175,044.00


				Page 5 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Collection Account Report for June 11, 2003 Distribution


	Collection Account Report


INTEREST - WITHDRAWALS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Prev. Unreimbursed PMI Premiums				0.00	0.00	0.00	0.00
	Prev. Unreimbursed Spec Haz Premiums				0.00	0.00	0.00	0.00
	Prev. Unreimbursed Liq. Expenses				0.00	0.00	0.00	0.00
	Prev. Unreimbursed Master/Sub-Servicing Fees				0.00	0.00	0.00	0.00
	Amt Rvcd Not Due Bondholder /Deposits in Error				0.00	0.00	0.00	0.00
	Prev. Unreimb. P&I Advances/Non Recov Advances				0.00	0.00	0.00	0.00
	Prev. Unreimbursed Servicing Advances				0.00	0.00	0.00	0.00
	Clear and Terminate Collection Account				0.00	0.00	0.00	0.00

	TOTAL INTEREST WITHDRAWALS				0.00	0.00	0.00	0.00

INTEREST - OTHER ACCOUNTS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Cap Contract Payment Amounts				0.00	0.00	0.00	0.00
	Floor Contract Payment Amounts				0.00	0.00	0.00	0.00
	Swap Contract Payment Amounts				0.00	0.00	0.00	0.00


INTEREST - FEES					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Owner Trustee Fee				0.00	0.00	0.00	0.00
	Indenture Trustee Fee				0.00	0.00	0.00	0.00
	Bond Insurance Premium Amount				0.00	0.00	0.00	0.00
	Radian PMI Insurance Premiums				0.00	0.00	0.00	0.00
	Current Servicing Fees				0.00	0.00	0.00	0.00

	TOTAL INTEREST FEES				0.00	0.00	0.00	0.00


				Page 6 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Collateral Report for June 11, 2003 Distribution


	Collateral Report


COLLATERAL					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL
	Loan Count:
	*Original*				1456	24	1004	2484
	Prior				1,444	24	998	2,466
	Prefunding				8	-	6	14
	Scheduled Paid Offs				-	-	-	-
	Full Voluntary Prepayments				(8)	-	(6)	(14)
	Repurchases				-	-	-	-
	Liquidations				-	-	-	-
	Current				1,444	24	998	2,466

	*Principal Balance:*
	Original				300,000,050.39	12,819,481.59	270,001,404.18	582,820,936.16
	Prior				297,389,501.58	12,793,790.99	268,357,685.24	578,540,977.81
	Prefunding				-	-	-	-
	Scheduled Principal				-	-	-	-
	Partial and Full Voluntary Prepayments				-	-	-	-
	Repurchases				-	-	-	-
	Liquidations				-	-	-	-
	Current				297,389,501.58	12,793,790.99	268,357,685.24	578,540,977.81

PREFUNDING					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL
SPACE INTENTIONALLY LEFT BLANK


	Group 1 - Adj		Group 2 - Fixed
	Group 2 - Adj
Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)


				Page 7 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Collateral Report for June 11, 2003 Distribution


	Collateral Report


CHARACTERISTICS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Weighted Average Coupon Original				4.691365%	5.683081%	2.767003%	3.821686%
	Weighted Average Coupon Prior				6.812732%	5.683126%	6.014743%	6.417709%
	Weighted Average Coupon Current				6.853452%	5.689294%	6.049802%	6.454933%
	Weighted Average Months to Maturity Original				342	357	359	350
	Weighted Average Months to Maturity Prior				341	356	358	349
	Weighted Average Months to Maturity Current				341	356	358	349
	Weighted Avg Remaining Amortization Term Original				344	356	359	351
	Weighted Avg Remaining Amortization Term Prior				343	355	358	350
	Weighted Avg Remaining Amortization Term Current				343	355	358	350
	Weighted Average Seasoning Original				1.59	1.81	1.33	1.47
	Weighted Average Seasoning Prior				2.58	2.81	2.33	2.47
	Weighted Average Seasoning Current				2.58	2.81	2.33	2.47

Note: Original information refers to deal issue.


	Group 1 - Adj		Group 2 - Fixed
	Group 2 - Adj
WAC by Groups					Total WAC


WARAT by Groups					Total WARAT


Note: Dates correspond to distribution dates.
				Page 8 of 9				© COPYRIGHT 2003 Deutsche Bank
	Impac CMB Trust 2003-4
	Mortgage Pass-Through Certificates
	Series 2003-4
	Collateral Report for June 11, 2003 Distribution


	Collateral Report


ARM CHARACTERISTICS					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Weighted Average Margin Original					2.907%	3.129%
	Weighted Average Margin Prior					2.907%	3.129%
	Weighted Average Margin Current					2.907%	3.129%
	Weighted Average Max Rate Original					10.683%	12.025%
	Weighted Average Max Rate Prior					10.683%	12.025%
	Weighted Average Max Rate Current					10.683%	12.025%
	Weighted Average Min Rate Original					5.683%	3.538%
	Weighted Average Min Rate Prior					5.683%	3.537%
	Weighted Average Min Rate Current					5.683%	3.537%
	Weighted Average Cap Up Original					1.000%	1.054%
	Weighted Average Cap Up Prior					1.000%	1.054%
	Weighted Average Cap Up Current					1.000%	1.054%
	Weighted Average Cap Down Original					1.000%	1.011%
	Weighted Average Cap Down Prior					1.000%	1.011%
	Weighted Average Cap Down Current					1.000%	1.011%

Note: Original information refers to deal issue.

SERVICING FEES / ADVANCES					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL

	Current Servicing Fees				0.00	0.00	0.00	0.00
	Delinquent Servicing Fees				0.00	0.00	0.00	0.00
	TOTAL SERVICING FEES				0.00	0.00	0.00	0.00

	Total Servicing Fees				0.00	0.00	0.00	0.00
	Compensating Interest				0.00	0.00	0.00	0.00
	Delinquent Servicing Fees				0.00	0.00	0.00	0.00
	COLLECTED SERVICING FEES				0.00	0.00	0.00	0.00

	Current PPIS				0.00	0.00	0.00	0.00
	Current Net PPIS				0.00	0.00	0.00	0.00

	Total Advanced Principal For Current Payment Date				0.00	0.00	0.00	0.00
	Total Advanced Interest For Current Payment Date				0.00	0.00	0.00	0.00
	TOTAL ADVANCES FOR CURRENT PERIOD				0.00	0.00	0.00	0.00


ADDITIONAL COLLATERAL INFORMATION					GROUP 2 - FIXED	GROUP 2 - ADJ	GROUP 1 - ADJ	TOTAL
SPACE INTENTIONALLY LEFT BLANK


				Page 9 of 9				© COPYRIGHT 2003 Deutsche Bank

IMH ASSETS CORP IMPAC CMB TRUST SERIES 2003-4 8-K