A detailed history of Tortoise Investment Management, LLC transactions in Regeneron Pharmaceuticals, Inc. stock. As of the latest transaction made, Tortoise Investment Management, LLC holds 29 shares of REGN stock, worth $20,111. This represents 0.0% of its overall portfolio holdings.

Number of Shares
29
Previous 24 20.83%
Holding current value
$20,111
Previous $12,000 33.33%
% of portfolio
0.0%
Previous 0.0%

Shares

13 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 13, 2025

BUY
$534.91 - $598.71 $2,674 - $2,993
5 Added 20.83%
29 $16,000
Q2 2025

Aug 08, 2025

SELL
$483.07 - $625.6 $24,153 - $31,280
-50 Reduced 67.57%
24 $12,000
Q1 2025

May 14, 2025

SELL
$634.14 - $744.83 $48,828 - $57,351
-77 Reduced 50.99%
74 $46,000
Q4 2024

Aug 07, 2025

BUY
$701.85 - $1046.91 $701 - $1,046
1 Added 0.67%
151 $107,000
Q4 2024

Feb 07, 2025

BUY
$701.85 - $1046.91 $701 - $1,046
1 Added 0.67%
151 $107,000
Q4 2023

Aug 07, 2025

BUY
$775.18 - $881.7 $58,913 - $67,009
76 Added 102.7%
150 $131,000
Q3 2023

Aug 07, 2025

BUY
$692.45 - $844.37 $52,626 - $64,172
76 Added 102.7%
150 $123,000
Q3 2023

Nov 09, 2023

SELL
$692.45 - $844.37 $17,311 - $21,109
-25 Reduced 14.29%
150 $123,000
Q2 2022

Aug 03, 2022

BUY
$548.35 - $738.84 $30,159 - $40,636
55 Added 45.83%
175 $103,000
Q3 2021

Nov 04, 2021

BUY
$574.03 - $680.96 $57,403 - $68,096
100 Added 500.0%
120 $73,000
Q1 2020

May 05, 2020

BUY
$336.18 - $494.43 $6,723 - $9,888
20 New
20 $10,000
Q2 2019

Aug 07, 2019

SELL
$299.6 - $414.82 $3,595 - $4,977
-12 Closed
0 $0
Q1 2019

May 07, 2019

BUY
$372.08 - $439.57 $4,464 - $5,274
12 New
12 $5,000

Others Institutions Holding REGN

About REGENERON PHARMACEUTICALS, INC.


  • Ticker REGN
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 107,190,000
  • Market Cap $74.3B
  • Description
  • Regeneron Pharmaceuticals, Inc. discovers, invents, develops, manufactures, and commercializes medicines for treating various diseases worldwide. The company's products include EYLEA injection to treat wet age-related macular degeneration and diabetic macular edema; myopic choroidal neovascularization; and diabetic retinopathy, as well as macula...
More about REGN
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