Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004357 | iShares 1-3 Year Treasury Bond ETF | ||
| Class/Contract C000012087 | iShares 1-3 Year Treasury Bond ETF | SHY | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004358 | iShares 7-10 Year Treasury Bond ETF | ||
| Class/Contract C000012088 | iShares 7-10 Year Treasury Bond ETF | IEF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004360 | iShares 20+ Year Treasury Bond ETF | ||
| Class/Contract C000012090 | iShares 20+ Year Treasury Bond ETF | TLT | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004361 | iShares iBoxx $ Investment Grade Corporate Bond ETF | ||
| Class/Contract C000012091 | iShares iBoxx $ Investment Grade Corporate Bond ETF | LQD | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000004362 | iShares Core U.S. Aggregate Bond ETF | ||
| Class/Contract C000012092 | iShares Core U.S. Aggregate Bond ETF | AGG | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013694 | iShares Short Treasury Bond ETF | ||
| Class/Contract C000037536 | iShares Short Treasury Bond ETF | SHV | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013695 | iShares 3-7 Year Treasury Bond ETF | ||
| Class/Contract C000037537 | iShares 3-7 Year Treasury Bond ETF | IEI | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013696 | iShares 10-20 Year Treasury Bond ETF | ||
| Class/Contract C000037538 | iShares 10-20 Year Treasury Bond ETF | TLH | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013697 | iShares 1-5 Year Investment Grade Corporate Bond ETF | ||
| Class/Contract C000037539 | iShares 1-5 Year Investment Grade Corporate Bond ETF | IGSB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013698 | iShares 5-10 Year Investment Grade Corporate Bond ETF | ||
| Class/Contract C000037540 | iShares 5-10 Year Investment Grade Corporate Bond ETF | IGIB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013699 | iShares Broad USD Investment Grade Corporate Bond ETF | ||
| Class/Contract C000037541 | iShares Broad USD Investment Grade Corporate Bond ETF | USIG | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013700 | iShares Intermediate Government/Credit Bond ETF | ||
| Class/Contract C000037542 | iShares Intermediate Government/Credit Bond ETF | GVI | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013701 | iShares Government/Credit Bond ETF | ||
| Class/Contract C000037543 | iShares Government/Credit Bond ETF | GBF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000013702 | iShares MBS ETF | ||
| Class/Contract C000037544 | iShares MBS ETF | MBB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000016772 | iShares iBoxx $ High Yield Corporate Bond ETF | ||
| Class/Contract C000046846 | iShares iBoxx $ High Yield Corporate Bond ETF | HYG | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000018861 | iShares National Muni Bond ETF | ||
| Class/Contract C000052220 | iShares National Muni Bond ETF | MUB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000019341 | iShares California Muni Bond ETF | ||
| Class/Contract C000053739 | iShares California Muni Bond ETF | CMF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000019342 | iShares New York Muni Bond ETF | ||
| Class/Contract C000053740 | iShares New York Muni Bond ETF | NYF | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000023506 | iShares Agency Bond ETF | ||
| Class/Contract C000069125 | iShares Agency Bond ETF | AGZ | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000023507 | iShares Short-Term National Muni Bond ETF | ||
| Class/Contract C000069126 | iShares Short-Term National Muni Bond ETF | SUB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000026651 | iShares 10+ Year Investment Grade Corporate Bond ETF | ||
| Class/Contract C000080009 | iShares 10+ Year Investment Grade Corporate Bond ETF | IGLB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000026652 | iShares Core 10+ Year USD Bond ETF | ||
| Class/Contract C000080010 | iShares Core 10+ Year USD Bond ETF | ILTB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000055401 | iShares Core 5-10 Year USD Bond ETF | ||
| Class/Contract C000174365 | iShares Core 5-10 Year USD Bond ETF | IMTB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000057341 | iShares High Yield Bond Factor ETF | ||
| Class/Contract C000182992 | iShares High Yield Bond Factor ETF | HYDB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000057342 | iShares Investment Grade Bond Factor ETF | ||
| Class/Contract C000182993 | iShares Investment Grade Bond Factor ETF | IGEB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000058036 | iShares ESG Aware 1-5 Year USD Corporate Bond ETF | ||
| Class/Contract C000189864 | iShares ESG Aware 1-5 Year USD Corporate Bond ETF | SUSB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000058037 | iShares ESG Aware USD Corporate Bond ETF | ||
| Class/Contract C000189865 | iShares ESG Aware USD Corporate Bond ETF | SUSC | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000062159 | iShares ESG Aware U.S. Aggregate Bond ETF | ||
| Class/Contract C000201167 | iShares ESG Aware U.S. Aggregate Bond ETF | EAGG | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000068768 | iShares 0-3 Month Treasury Bond ETF | ||
| Class/Contract C000219740 | iShares 0-3 Month Treasury Bond ETF | SGOV | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000068817 | iShares ESG Advanced Total USD Bond Market ETF | ||
| Class/Contract C000219898 | iShares ESG Advanced Total USD Bond Market ETF | EUSB | |
| Status | Name | Ticker Symbol | |
| CIK 0001100663 | |||
| Series S000069558 | iShares 25+ Year Treasury STRIPS Bond ETF | ||
| Class/Contract C000221912 | iShares 25+ Year Treasury STRIPS Bond ETF | GOVZ | |
IRS No.: 943351276 | State of Incorp.: DE | Fiscal Year End: 1231
Type: N-CEN | Act: 40 | File No.: 811-09729 | Film No.: 21915601