Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004357 | iShares Barclays 1-3 Year Treasury Bond Fund | ||
| Class/Contract C000012087 | iShares Barclays 1-3 Year Treasury Bond Fund | SHY | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004358 | iShares Barclays 7-10 Year Treasury Bond Fund | ||
| Class/Contract C000012088 | iShares Barclays 7-10 Year Treasury Bond Fund | IEF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004360 | iShares Barclays 20+ Year Treasury Bond Fund | ||
| Class/Contract C000012090 | iShares Barclays 20+ Year Treasury Bond Fund | TLT | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004361 | iShares iBoxx $ Investment Grade Corporate Bond Fund | ||
| Class/Contract C000012091 | iShares iBoxx $ Investment Grade Corporate Bond Fund | LQD | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004362 | iShares Barclays Aggregate Bond Fund | ||
| Class/Contract C000012092 | iShares Barclays Aggregate Bond Fund | AGG | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013694 | iShares Barclays Short Treasury Bond Fund | ||
| Class/Contract C000037536 | iShares Barclays Short Treasury Bond Fund | SHV | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013695 | iShares Barclays 3-7 Year Treasury Bond Fund | ||
| Class/Contract C000037537 | iShares Barclays 3-7 Year Treasury Bond Fund | IEI | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013696 | iShares Barclays 10-20 Year Treasury Bond Fund | ||
| Class/Contract C000037538 | iShares Barclays 10-20 Year Treasury Bond Fund | TLH | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013697 | iShares Barclays 1-3 Year Credit Bond Fund | ||
| Class/Contract C000037539 | iShares Barclays 1-3 Year Credit Bond Fund | CSJ | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013698 | iShares Barclays Intermediate Credit Bond Fund | ||
| Class/Contract C000037540 | iShares Barclays Intermediate Credit Bond Fund | CIU | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013699 | iShares Barclays Credit Bond Fund | ||
| Class/Contract C000037541 | iShares Barclays Credit Bond Fund | CFT | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013700 | iShares Barclays Intermediate Government/Credit Bond Fund | ||
| Class/Contract C000037542 | iShares Barclays Intermediate Government/Credit Bond Fund | GVI | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013701 | iShares Barclays Government/Credit Bond Fund | ||
| Class/Contract C000037543 | iShares Barclays Government/Credit Bond Fund | GBF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013702 | iShares Barclays MBS Bond Fund | ||
| Class/Contract C000037544 | iShares Barclays MBS Bond Fund | MBB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000016772 | iShares iBoxx $ High Yield Corporate Bond Fund | ||
| Class/Contract C000046846 | iShares iBoxx $ High Yield Corporate Bond Fund | HYG | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000018861 | iShares S&P National AMT-Free Municipal Bond Fund | ||
| Class/Contract C000052220 | iShares S&P National AMT-Free Municipal Bond Fund | MUB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000019341 | iShares S&P California AMT-Free Municipal Bond Fund | ||
| Class/Contract C000053739 | iShares S&P California AMT-Free Municipal Bond Fund | CMF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000019342 | iShares S&P New York AMT-Free Municipal Bond Fund | ||
| Class/Contract C000053740 | iShares S&P New York AMT-Free Municipal Bond Fund | NYF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000023506 | iShares Barclays Agency Bond Fund | ||
| Class/Contract C000069125 | iShares Barclays Agency Bond Fund | AGZ | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000023507 | iShares S&P Short Term National AMT-Free Municipal Bond Fund | ||
| Class/Contract C000069126 | iShares S&P Short Term National AMT-Free Municipal Bond Fund | SUB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000026651 | iShares 10+ Year Credit Bond Fund | ||
| Class/Contract C000080009 | iShares 10+ Year Credit Bond Fund | CLY | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000026652 | iShares 10+ Year Government/Credit Bond Fund | ||
| Class/Contract C000080010 | iShares 10+ Year Government/Credit Bond Fund | GLJ | |
EIN.: 943351276 | State of Incorp.: DE | Fiscal Year End: 1231
Type: NSAR-B | Act: 40 | File No.: 811-09729 | Film No.: 12783281