| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G | 2013-02-11 | VANGUARD GROUP INC | KALOBIOS PHARMACEUTICALS INC | 2,486,375 | 10.3% | EDGAR |
| SC 13G | 2013-02-08 | DEVELOPMENT BANK OF JAPAN INC. | KALOBIOS PHARMACEUTICALS INC | 1,538,461 | 16.6% | EDGAR |
| SC 13G | 2013-02-04 | PRIMECAP MANAGEMENT CO/CA/ | KALOBIOS PHARMACEUTICALS INC | 3,684,375 | 15.8% | EDGAR |