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GRANDFIELD & DODD, LLC
> REGN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | REGENERON PHARMACEUTICALS, INC. | REGN | 31,479 | 554 | 22,618,921,000 | -2,791,224,000 | $718,540.01 |
| 03/31/2023 | REGENERON PHARMACEUTICALS, INC. | REGN | 30,925 | 653 | 25,410,145,000 | 25,389,295,000 | $821,670.01 |
| 09/30/2022 | REGENERON PHARMACEUTICALS, INC. | REGN | 30,272 | 998 | 20,850,000 | 3,550,000 | $688.76 |
| 06/30/2022 | REGENERON PHARMACEUTICALS, INC. | REGN | 29,274 | 1,477 | 17,300,000 | -250,000 | $590.97 |
| 12/31/2021 | REGENERON PHARMACEUTICALS, INC. | REGN | 27,797 | 1,766 | 17,550,000 | 1,800,000 | $631.36 |
| 09/30/2021 | REGENERON PHARMACEUTICALS, INC. | REGN | 26,031 | 4,395 | 15,750,000 | 3,670,000 | $605.05 |
| 06/30/2021 | REGENERON PHARMACEUTICALS, INC. | REGN | 21,636 | 3,881 | 12,080,000 | 3,500,000 | $558.33 |
| 12/31/2020 | REGENERON PHARMACEUTICALS, INC. | REGN | 17,755 | 1,085 | 8,580,000 | -750,000 | $483.24 |
| 09/30/2020 | REGENERON PHARMACEUTICALS, INC. | REGN | 16,670 | 9 | 9,330,000 | -1,060,000 | $559.69 |
| 06/30/2020 | REGENERON PHARMACEUTICALS, INC. | REGN | 16,661 | -423 | 10,390,000 | 2,048,000 | $623.61 |
| 03/31/2020 | REGENERON PHARMACEUTICALS, INC. | REGN | 17,084 | 1,119 | 8,342,000 | 2,347,000 | $488.29 |
| 12/31/2019 | REGENERON PHARMACEUTICALS, INC. | REGN | 15,965 | 2,348 | 5,995,000 | 2,218,000 | $375.51 |
| 09/30/2019 | REGENERON PHARMACEUTICALS, INC. | REGN | 13,617 | 2,019 | 3,777,000 | 147,000 | $277.37 |
| 06/30/2019 | REGENERON PHARMACEUTICALS, INC. | REGN | 11,598 | 2,620 | 3,630,000 | -57,000 | $312.98 |
| 03/31/2019 | REGENERON PHARMACEUTICALS, INC. | REGN | 8,978 | 283 | 3,687,000 | 439,000 | $410.67 |
| 12/31/2018 | REGENERON PHARMACEUTICALS, INC. | REGN | 8,695 | 1,522 | 3,248,000 | 350,000 | $373.55 |
| 09/30/2018 | REGENERON PHARMACEUTICALS, INC. | REGN | 7,173 | 1,327 | 2,898,000 | 881,000 | $404.02 |
| 06/30/2018 | REGENERON PHARMACEUTICALS, INC. | REGN | 5,846 | 3,401 | 2,017,000 | 1,175,000 | $345.02 |
| 03/31/2018 | REGENERON PHARMACEUTICALS, INC. | REGN | 2,445 | 711 | 842,000 | 190,000 | $344.38 |
| 12/31/2017 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,734 | 87 | 652,000 | -84,000 | $376.01 |
| 09/30/2017 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,647 | 115 | 736,000 | -16,000 | $446.87 |
| 06/30/2017 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,532 | 35 | 752,000 | 172,000 | $490.86 |
| 03/31/2017 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,497 | 17 | 580,000 | 37,000 | $387.44 |
| 12/31/2016 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,480 | 180 | 543,000 | 20,000 | $366.89 |
| 09/30/2016 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,300 | 125 | 523,000 | 113,000 | $402.31 |
| 06/30/2016 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,175 | 395 | 410,000 | -13,000 | $348.94 |
| 03/31/2016 | REGENERON PHARMACEUTICALS, INC. | REGN | 1,127 | 347 | 406,000 | -17,000 | $360.25 |
| 12/31/2015 | REGENERON PHARMACEUTICALS, INC. | REGN | 780 | 780 | 423,000 | 423,000 | $542.31 |
| 09/30/2015 | REGENERON PHARMACEUTICALS, INC. | REGN | 673 | 673 | 313,000 | 313,000 | $465.08 |
| 06/30/2015 | REGENERON PHARMACEUTICALS, INC. | REGN | 0 | -742 | 0 | -335,000 | |
| 06/30/2015 | REGENERON PHARMACEUTICALS, INC. | REGN | 699 | -43 | 357,000 | 22,000 | $510.73 |
| 03/31/2015 | REGENERON PHARMACEUTICALS, INC. | REGN | 742 | 742 | 335,000 | 335,000 | $451.48 |
| 12/31/2014 | REGENERON PHARMACEUTICALS, INC. | REGN | 742 | 742 | 304,000 | 304,000 | $409.70 |
| 09/30/2014 | REGENERON PHARMACEUTICALS, INC. | REGN | 742 | 742 | 268,000 | 268,000 | $361.19 |
| 06/30/2014 | REGENERON PHARMACEUTICALS, INC. | REGN | 722 | 722 | 204,000 | 204,000 | $282.55 |
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