REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

East Coast Asset Management, LLC.'s Holding History (CIK: 0001579254)

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

Q2 2013
Shares 3,401 Value ($000) $765 Avg Close $231.58 Range $176.14 - $282.42
Q1 2013
Shares 6,184 Value ($000) $1,091 Avg Close $170.72 Range $153.31 - $184.76
Q4 2012
Shares 6,673 Value ($000) $1,142 Avg Close — Range —