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|----------------------------------------- | ---- | --------- | ----------- | ----- | ------------- |  | ----------------------- |  | -------------- |  | --------- |  |  |  | -------------- | 
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|GMACM MORTGAGE LOAN TRUST Series 2005-AR4
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|2005 Annual Statement                    
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | DISTRIBUTION IN DOLLARS |  |                |  |           |  | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  | ENDING BALANCE | 
|PERIOD                                    |      | CLASS     |             | CUSIP |               |  | INTEREST                |  |                |  | PRINCIPAL |  | 
|200507                                    | 1-A  | 76112BUD0 | $77,932.15  |       | $416,463.28   |  | $18,476,536.72          | 
|200508                                    | 1-A  | 76112BUD0 | $76,075.30  |       | $415,562.37   |  | $18,060,974.35          | 
|200509                                    | 1-A  | 76112BUD0 | $74,223.35  |       | $377,723.69   |  | $17,683,250.66          | 
|200510                                    | 1-A  | 76112BUD0 | $72,577.34  |       | $344,034.94   |  | $17,339,215.72          | 
|200511                                    | 1-A  | 76112BUD0 | $70,943.95  |       | $135,292.79   |  | $17,203,922.93          | 
|200512                                    | 1-A  | 76112BUD0 | $70,433.74  |       | $746,433.89   |  | $16,457,489.04          | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $442,185.83             |  | $2,435,510.96  |  |           |  | 
|200507                                    | 2A-1 | 76112BUE8 | $251,189.37 |       | $821,894.27   |  | $55,228,105.73          | 
|200508                                    | 2A-1 | 76112BUE8 | $247,500.50 |       | $561,909.45   |  | $54,666,196.28          | 
|200509                                    | 2A-1 | 76112BUE8 | $244,833.98 |       | $917,494.92   |  | $53,748,701.35          | 
|200510                                    | 2A-1 | 76112BUE8 | $240,587.95 |       | $654,790.93   |  | $53,093,910.43          | 
|200511                                    | 2A-1 | 76112BUE8 | $237,437.81 |       | $1,669,770.38 |  | $51,424,140.05          | 
|200512                                    | 2A-1 | 76112BUE8 | $230,010.86 |       | $515,710.58   |  | $50,908,429.47          | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $1,451,560.47           |  | $5,141,570.53  |  |           |  | 
|200507                                    | 2A-2 | 76112BUF5 | $12,274.89  |       | $40,163.58    |  | $2,698,836.42           | 
|200508                                    | 2A-2 | 76112BUF5 | $12,094.65  |       | $27,458.88    |  | $2,671,377.55           | 
|200509                                    | 2A-2 | 76112BUF5 | $11,964.35  |       | $44,835.30    |  | $2,626,542.25           | 
|200510                                    | 2A-2 | 76112BUF5 | $11,756.83  |       | $31,997.72    |  | $2,594,544.53           | 
|200511                                    | 2A-2 | 76112BUF5 | $11,602.89  |       | $81,596.81    |  | $2,512,947.72           | 
|200512                                    | 2A-2 | 76112BUF5 | $11,239.96  |       | $25,201.27    |  | $2,487,746.45           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $70,933.57              |  | $251,253.56    |  |           |  | 
|200507                                    | 3A-1 | 76112BUG3 | $614,169.01 |       | $2,379,836.96 |  | $141,720,163.04         | 
|200508                                    | 3A-1 | 76112BUG3 | $603,529.62 |       | $388,681.59   |  | $141,331,481.45         | 
|200509                                    | 3A-1 | 76112BUG3 | $601,839.80 |       | $1,480,140.52 |  | $139,851,340.93         | 
|200510                                    | 3A-1 | 76112BUG3 | $594,996.29 |       | $3,749,680.55 |  | $136,101,660.38         | 
|200511                                    | 3A-1 | 76112BUG3 | $578,745.70 |       | $1,769,007.77 |  | $134,332,652.62         | 
|200512                                    | 3A-1 | 76112BUG3 | $570,931.18 |       | $1,275,024.94 |  | $133,057,627.68         | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $3,564,211.60           |  | $11,042,372.33 |  |           |  | 
|200507                                    | 3A-2 | 76112BUH1 | $30,094.71  |       | $116,613.66   |  | $6,944,386.34           | 
|200508                                    | 3A-2 | 76112BUH1 | $29,573.39  |       | $19,045.67    |  | $6,925,340.67           | 
|200509                                    | 3A-2 | 76112BUH1 | $29,490.60  |       | $72,527.91    |  | $6,852,812.76           | 
|200510                                    | 3A-2 | 76112BUH1 | $29,155.23  |       | $183,736.95   |  | $6,669,075.81           | 
|200511                                    | 3A-2 | 76112BUH1 | $28,358.94  |       | $86,682.61    |  | $6,582,393.20           | 
|200512                                    | 3A-2 | 76112BUH1 | $27,976.02  |       | $62,477.11    |  | $6,519,916.09           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $174,648.89             |  | $541,083.91    |  |           |  | 
|200507                                    | 4A-1 | 76112BUJ7 | $226,968.33 |       | $40,359.54    |  | $52,709,640.46          | 
|200508                                    | 4A-1 | 76112BUJ7 | $226,807.76 |       | $927,629.21   |  | $51,782,011.24          | 
|200509                                    | 4A-1 | 76112BUJ7 | $222,661.67 |       | $1,001,719.15 |  | $50,780,292.09          | 
|200510                                    | 4A-1 | 76112BUJ7 | $218,514.90 |       | $299,574.43   |  | $50,480,717.66          | 
|200511                                    | 4A-1 | 76112BUJ7 | $217,247.98 |       | $64,233.34    |  | $50,416,484.33          | 
|200512                                    | 4A-1 | 76112BUJ7 | $216,987.56 |       | $47,133.20    |  | $50,369,351.13          | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $1,329,188.20           |  | $2,380,648.87  |  |           |  | 
|200507                                    | 4A-2 | 76112BUK4 | $11,152.64  |       | $1,983.16     |  | $2,590,016.84           | 
|200508                                    | 4A-2 | 76112BUK4 | $11,144.77  |       | $45,581.33    |  | $2,544,435.51           | 
|200509                                    | 4A-2 | 76112BUK4 | $10,941.05  |       | $49,221.92    |  | $2,495,213.59           | 
|200510                                    | 4A-2 | 76112BUK4 | $10,737.26  |       | $14,720.32    |  | $2,480,493.27           | 
|200511                                    | 4A-2 | 76112BUK4 | $10,675.01  |       | $3,156.26     |  | $2,477,337.01           | 
|200512                                    | 4A-2 | 76112BUK4 | $10,662.21  |       | $2,316.00     |  | $2,475,021.01           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $65,312.94              |  | $116,978.99    |  |           |  | 
|200507                                    | 5A-1 | 76112BUL2 | $358,555.20 |       | $1,269,893.39 |  | $78,730,106.61          | 
|200508                                    | 5A-1 | 76112BUL2 | $352,780.33 |       | $1,454,614.86 |  | $77,275,491.75          | 
|200509                                    | 5A-1 | 76112BUL2 | $345,995.89 |       | $2,646,495.83 |  | $74,628,995.92          | 
|200510                                    | 5A-1 | 76112BUL2 | $333,758.37 |       | $1,495,668.51 |  | $73,133,327.41          | 
|200511                                    | 5A-1 | 76112BUL2 | $326,823.44 |       | $336,224.91   |  | $72,797,102.50          | 
|200512                                    | 5A-1 | 76112BUL2 | $325,259.80 |       | $311,124.21   |  | $72,485,978.29          | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $2,043,173.03           |  | $7,514,021.71  |  |           |  | 
|200507                                    | 5A-2 | 76112BUM0 | $17,627.47  |       | $62,431.13    |  | $3,870,568.87           | 
|200508                                    | 5A-2 | 76112BUM0 | $17,343.58  |       | $71,512.50    |  | $3,799,056.36           | 
|200509                                    | 5A-2 | 76112BUM0 | $17,010.05  |       | $130,108.35   |  | $3,668,948.01           | 
|200510                                    | 5A-2 | 76112BUM0 | $16,408.40  |       | $73,530.80    |  | $3,595,417.21           | 
|200511                                    | 5A-2 | 76112BUM0 | $16,067.46  |       | $16,529.66    |  | $3,578,887.55           | 
|200512                                    | 5A-2 | 76112BUM0 | $15,990.59  |       | $15,295.64    |  | $3,563,591.91           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $100,447.55             |  | $369,408.08    |  |           |  | 
|200507                                    | B-1  | 76112BUS7 | $9,231.62   |       | $265.87       |  | $2,123,734.13           | 
|200508                                    | B-1  | 76112BUS7 | $9,226.14   |       | $270.75       |  | $2,123,463.38           | 
|200509                                    | B-1  | 76112BUS7 | $9,220.38   |       | $274.06       |  | $2,123,189.32           | 
|200510                                    | B-1  | 76112BUS7 | $9,212.89   |       | $276.27       |  | $2,122,913.04           | 
|200511                                    | B-1  | 76112BUS7 | $9,205.53   |       | $283.00       |  | $2,122,630.04           | 
|200512                                    | B-1  | 76112BUS7 | $9,202.66   |       | $287.15       |  | $2,122,342.89           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $55,299.22              |  | $1,657.10      |  |           |  | 
|200507                                    | B-2  | 76112BUT5 | $5,871.90   |       | $169.11       |  | $1,350,830.89           | 
|200508                                    | B-2  | 76112BUT5 | $5,868.42   |       | $172.22       |  | $1,350,658.68           | 
|200509                                    | B-2  | 76112BUT5 | $5,864.75   |       | $174.32       |  | $1,350,484.35           | 
|200510                                    | B-2  | 76112BUT5 | $5,859.99   |       | $175.73       |  | $1,350,308.63           | 
|200511                                    | B-2  | 76112BUT5 | $5,855.31   |       | $180.01       |  | $1,350,128.62           | 
|200512                                    | B-2  | 76112BUT5 | $5,853.48   |       | $182.65       |  | $1,349,945.97           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $35,173.85              |  | $1,054.04      |  |           |  | 
|200507                                    | B-3  | 76112BUU2 | $4,196.45   |       | $120.86       |  | $965,392.71             | 
|200508                                    | B-3  | 76112BUU2 | $4,193.96   |       | $123.08       |  | $965,269.64             | 
|200509                                    | B-3  | 76112BUU2 | $4,191.34   |       | $124.58       |  | $965,145.06             | 
|200510                                    | B-3  | 76112BUU2 | $4,188.22   |       | $125.59       |  | $965,019.47             | 
|200511                                    | B-3  | 76112BUU2 | $4,184.59   |       | $128.65       |  | $964,890.82             | 
|200512                                    | B-3  | 76112BUU2 | $4,183.53   |       | $130.53       |  | $964,760.29             | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $25,138.09              |  | $753.29        |  |           |  | 
|200507                                    | M-1  | 76112BUP3 | $27,686.17  |       | $797.35       |  | $6,369,202.65           | 
|200508                                    | M-1  | 76112BUP3 | $27,669.75  |       | $812.00       |  | $6,368,390.65           | 
|200509                                    | M-1  | 76112BUP3 | $27,652.46  |       | $821.93       |  | $6,367,568.72           | 
|200510                                    | M-1  | 76112BUP3 | $27,630.01  |       | $828.56       |  | $6,366,740.15           | 
|200511                                    | M-1  | 76112BUP3 | $27,607.92  |       | $848.74       |  | $6,365,891.42           | 
|200512                                    | M-1  | 76112BUP3 | $27,599.33  |       | $861.19       |  | $6,365,030.23           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $165,845.64             |  | $4,969.77      |  |           |  | 
|200507                                    | M-2  | 76112BUQ1 | $19,297.74  |       | $555.77       |  | $4,439,444.23           | 
|200508                                    | M-2  | 76112BUQ1 | $19,286.29  |       | $565.98       |  | $4,438,878.26           | 
|200509                                    | M-2  | 76112BUQ1 | $19,274.24  |       | $572.90       |  | $4,438,305.35           | 
|200510                                    | M-2  | 76112BUQ1 | $19,258.59  |       | $577.52       |  | $4,437,727.83           | 
|200511                                    | M-2  | 76112BUQ1 | $19,243.20  |       | $591.59       |  | $4,437,136.25           | 
|200512                                    | M-2  | 76112BUQ1 | $19,237.21  |       | $600.26       |  | $4,436,535.98           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $115,597.27             |  | $3,464.02      |  |           |  | 
|200507                                    | M-3  | 76112BUR9 | $11,743.80  |       | $338.22       |  | $2,701,661.78           | 
|200508                                    | M-3  | 76112BUR9 | $11,736.84  |       | $344.43       |  | $2,701,317.35           | 
|200509                                    | M-3  | 76112BUR9 | $11,729.51  |       | $348.64       |  | $2,700,968.71           | 
|200510                                    | M-3  | 76112BUR9 | $11,719.98  |       | $351.46       |  | $2,700,617.25           | 
|200511                                    | M-3  | 76112BUR9 | $11,710.61  |       | $360.01       |  | $2,700,257.24           | 
|200512                                    | M-3  | 76112BUR9 | $11,706.97  |       | $365.29       |  | $2,699,891.94           | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $70,347.71              |  | $2,108.05      |  |           |  | 
|200507                                    | R    | 76112BUN8 | $0.55       |       | $100.00       |  | $0.00                   | 
|200508                                    | R    | 76112BUN8 | $0.00       |       | $0.00         |  | $0.00                   | 
|200509                                    | R    | 76112BUN8 | $0.00       |       | $0.00         |  | $0.00                   | 
|200510                                    | R    | 76112BUN8 | $0.00       |       | $0.00         |  | $0.00                   | 
|200511                                    | R    | 76112BUN8 | $0.00       |       | $0.00         |  | $0.00                   | 
|200512                                    | R    | 76112BUN8 | $0.00       |       | $0.00         |  | $0.00                   | 
|                                          |      |           |             |       |               |  |                         |  |                |  |           |  |  |  |                | 
|                                          |      |           |             |       |               |  | $0.55                   |  | $100.00        |  |           |  | 
|                                          |      |           |             |       |               |  | $9,709,064.41           |  | $29,806,955.21 |  |           |  |