WILLIAMS PARTNERS L P

CUSIP: 96950F104 Class: COM UNIT L P

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q4 2014
Shares 1,340,804 Value ($000) $60,000,979 Avg Close — Range —
Q3 2014
Shares 1,240,682 Value ($000) $65,818 Avg Close — Range —
Q2 2014
Shares 1,440,572 Value ($000) $78,209 Avg Close — Range —
Q1 2014
Shares 1,541,377 Value ($000) $78,517,744 Avg Close — Range —
Q4 2013
Shares 2,336,657 Value ($000) $118,842,375 Avg Close — Range —
Q3 2013
Shares 2,333,687 Value ($000) $123,405,369 Avg Close — Range —
Q2 2013
Shares 2,218,797 Value ($000) $114,489,925 Avg Close — Range —