| SC 13G | 2002-02-13 | BERGER OMNI INVESTMENT TRUST | KEY ENERGY SERVICES INC | 7,650,100 | 7.5% | EDGAR |
| SC 13G/A | 2002-02-06 | PRICE T ROWE ASSOCIATES INC /MD/ | KEY ENERGY SERVICES INC | 3,605,400 | 3.5% | EDGAR |
| SC 13G/A | 2002-01-23 | MELLON FINANCIAL CORP | KEY ENERGY SERVICES INC | 6,001,311 | 5.9% | EDGAR |
| SC 13G | 2001-10-11 | PERKINS WOLF MCDONNELL & CO | KEY ENERGY SERVICES INC | 11,036,014 | - | EDGAR |
| SC 13G | 2001-04-06 | PERKINS WOLF MCDONNELL & CO | KEY ENERGY SERVICES INC | 6,716,470 | - | EDGAR |
| SC 13G/A | 2001-02-16 | WEST HIGHLAND CAPITAL INC/LHG/WHP/PB/BP | KEY ENERGY SERVICES INC | 3,000,000 | 3.1% | EDGAR |
| SC 13G/A | 2001-02-08 | PRICE T ROWE ASSOCIATES INC /MD/ | KEY ENERGY SERVICES INC | 6,735,600 | 6.8% | EDGAR |
| SC 13G/A | 2001-01-30 | WEST HIGHLAND CAPITAL INC/LHG/WHP/PB/BP | KEY ENERGY SERVICES INC | 6,000,000 | 6.2% | EDGAR |
| SC 13G | 2001-01-26 | MELLON FINANCIAL CORP | KEY ENERGY SERVICES INC | 6,183,414 | 6.3% | EDGAR |
| SC 13G | 2000-02-14 | PERKINS WOLF MCDONNELL & CO /ADV | KEY ENERGY SERVICES INC | 5,954,450 | 7.2% | EDGAR |
| SC 13G | 2000-02-14 | PERKINS WOLF MCDONNELL & CO /ADV | KEY ENERGY SERVICES INC | 5,954,450 | 7.2% | EDGAR |
| SC 13G | 2000-02-14 | PERKINS WOLF MCDONNELL & CO /ADV | KEY ENERGY SERVICES INC | 5,954,450 | 7.2% | EDGAR |
| SC 13G/A | 2000-02-11 | WEST HIGHLAND CAPITAL INC/LHG/WHP/PB/BP | KEY ENERGY SERVICES INC | 10,000,000 | 12.1% | EDGAR |
| SC 13G/A | 2000-02-11 | WEST HIGHLAND CAPITAL INC/LHG/WHP/PB/BP | KEY ENERGY SERVICES INC | 10,000,000 | 12.1% | EDGAR |
| SC 13G/A | 2000-02-11 | WEST HIGHLAND CAPITAL INC/LHG/WHP/PB/BP | KEY ENERGY SERVICES INC | 10,000,000 | 12.1% | EDGAR |
| SC 13G | 2000-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | KEY ENERGY SERVICES INC | 7,232,100 | 8.7% | EDGAR |
| SC 13G | 2000-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | KEY ENERGY SERVICES INC | 7,232,100 | 8.7% | EDGAR |
| SC 13G | 2000-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | KEY ENERGY SERVICES INC | 7,232,100 | 8.7% | EDGAR |
| SC 13G/A | 2000-02-03 | LOOMIS SAYLES & CO LP /MA/ /ADV | KEY ENERGY SERVICES INC | 1,628,232 | 1.9% | EDGAR |
| SC 13G/A | 2000-02-03 | LOOMIS SAYLES & CO LP /MA/ /ADV | KEY ENERGY SERVICES INC | 1,628,232 | 1.9% | EDGAR |