PRINCIPAL FINANCIAL GROUP

CUSIP: 74251v102 Class: COM

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

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

Q2 2019
Shares 5,412 Value ($000) $313 Avg Close — Range —
Q1 2019
Shares 5,412 Value ($000) $272 Avg Close — Range —
Q4 2018
Shares 5,412 Value ($000) $239 Avg Close — Range —
Q3 2018
Shares 5,262 Value ($000) $308 Avg Close — Range —
Q2 2018
Shares 6,858 Value ($000) $363 Avg Close — Range —