REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

WELCH & FORBES LLC's Holding History (CIK: 0000105495)

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

Q3 2017

Shares 471 Value ($000) $211 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 599 Value ($000) $294 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 544 Value ($000) $211 Avg Close $368.62 Range $338.21 - $399.00

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	471	$211	$473.21	$424.12 - $523.22
Q2 2017	599	$294	$435.19	$358.01 - $540.55
Q1 2017	544	$211	$368.62	$338.21 - $399.00