Plug Power Inc

CUSIP: 72919p202 Class: COM

BERKSHIRE ASSET MANAGEMENT LLC/PA's Holding History (CIK: 0000949012)

Note: Option positions (PUT/CALL) are excluded.

Q4 2017
Shares 10,000 Value ($000) $24 Avg Close — Range —
Q3 2017
Shares 10,000 Value ($000) $26 Avg Close — Range —