REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

Douglass Winthrop Advisors, LLC's Holding History (CIK: 0001308527)

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

Q4 2016
Shares 775 Value ($000) $284 Avg Close $378.17 Range $323.56 - $450.46
Q3 2016
Shares 675 Value ($000) $271 Avg Close $398.92 Range $346.51 - $441.54
Q2 2016
Shares 650 Value ($000) $227 Avg Close $383.00 Range $327.27 - $431.54
Q1 2016
Shares 650 Value ($000) $234 Avg Close $409.79 Range $347.04 - $529.97
Q3 2014
Shares 6,550 Value ($000) $2,361 Avg Close $333.32 Range $283.49 - $367.27
Q2 2014
Shares 6,550 Value ($000) $1,850 Avg Close $294.74 Range $268.01 - $318.24
Q1 2014
Shares 6,550 Value ($000) $1,967 Avg Close $306.39 Range $261.52 - $350.55
Q4 2013
Shares 6,550 Value ($000) $1,803 Avg Close $286.03 Range $256.27 - $317.74
Q3 2013
Shares 6,550 Value ($000) $2,049 Avg Close $261.58 Range $224.53 - $318.07
Q2 2013
Shares 6,550 Value ($000) $1,473 Avg Close $231.58 Range $176.14 - $282.42