Regeneron Pharmaceuticals, Inc REGN

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Regeneron Pharmaceuticals, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 805.0200 · FX 1 USD = 1.277900 SGD · about SGD 1028.7350 per unit

Sign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 577.95 → 805.02 · 39.3%
852.030714.990577.950 1,2 3 4 5 6 7,8 9,10 11 12 13,14 15 16 Oct 25Jan 26Apr 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 24 Oct 2025 — 25 Oct 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
Weekend
819.0900 819.0900 801.2200 805.0200 527,718
809.0100 825.5200 800.0000 819.0900 852,300
806.7400 813.8600 800.2400 805.6700 581,000
793.8500 807.8600 789.6900 807.4800 623,400
792.5900 800.0000 780.8300 782.0400 489,600
Weekend
Weekend
803.0100 805.6800 787.3200 790.7400 653,500
802.3300 809.4900 792.5800 796.3400 798,800
758.1600 781.8400 755.2100 778.3600 878,400
762.4900 765.6000 743.5700 753.1200 629,600
748.6700 768.6600 744.9600 762.8100 618,200
Weekend
Weekend
737.2000 751.2700 732.8300 746.5400 466,000
742.1200 744.5000 723.6500 739.5700 500,300
738.0500 753.6800 734.1800 742.1200 626,400
16 · 8-K After market open · 11:51 ET FORM 8-K ↗
734.6100 740.5100 727.1600 738.7200 615,100
734.3700 736.4200 722.0200 726.4700 694,700
Weekend
Weekend
740.5000 742.5000 729.2000 735.2000 613,900
766.5300 777.4300 726.0200 734.8100 1,042,800
15 · 8-K After-hours · 20:14 ET FORM 8-K ↗
749.8400 763.7200 742.9400 758.2700 872,400
745.8500 752.4700 741.8300 750.5100 804,300
778.0900 780.9500 750.0000 752.2500 1,149,800
Weekend
Weekend
803.8700 803.8700 784.1300 788.0400 592,100
801.5900 807.2100 789.3900 796.0200 602,600
805.2300 813.5300 790.0200 801.8200 721,100
802.4800 811.6600 791.3100 803.9000 600,200
786.0300 801.4400 779.9600 798.1700 704,400
Weekend
Weekend
787.3400 794.7300 779.6500 784.8500 2,472,600
781.1800 789.9900 774.7800 789.4500 702,800
775.8200 779.9800 771.8000 774.6100 382,900
788.5300 788.5800 769.5700 774.1100 540,600
791.9800 798.8400 779.4500 793.7400 591,100
Weekend
Weekend
800.0000 800.2200 780.8100 781.4900 444,000
794.3600 806.1400 792.0000 793.2600 526,900
803.8300 808.6300 796.7300 807.6500 621,400
814.3600 821.1700 799.4200 810.3100 556,500
No trading
Weekend
Weekend
840.0600 841.5400 825.8300 827.7200 561,100
858.1900 859.3400 837.6300 843.4700 496,200
826.2400 854.4900 825.7700 852.0300 749,400
808.8600 824.6300 804.3200 823.8200 682,600
782.4400 802.7800 779.0800 799.0800 894,100
Weekend
Weekend
809.4000 809.4000 789.0800 794.1900 487,700
806.1800 817.6200 804.2700 807.7100 766,800
827.7800 831.6700 814.7000 814.7900 585,300
829.2200 839.9400 823.4400 833.5600 505,400
834.5100 834.7000 823.4000 828.5000 672,000
Weekend
Weekend
835.7400 847.0000 826.6400 834.0400 786,800
831.7000 840.8200 826.0500 826.6400 596,400
817.1700 844.9200 815.3800 840.8400 750,400
814.0000 821.0200 805.9300 810.2400 779,000
801.7600 813.1800 795.7300 805.9300 541,300
Weekend
Weekend
802.3500 806.5400 792.5700 803.4800 425,600
802.2100 815.8000 794.4900 805.9700 709,700
790.5500 801.3600 784.6100 797.9900 575,100
808.8000 813.6300 796.6600 797.0000 939,100
781.7200 809.0900 775.8300 808.0500 1,213,700
Weekend
Weekend
774.4700 785.9900 767.1700 784.3600 837,600
777.8500 780.9500 762.7900 772.1100 783,900
767.9800 782.5900 763.3100 768.5800 532,400
753.7600 763.5400 747.0000 760.6600 817,300
769.5400 772.7500 756.4400 759.2400 842,600
Weekend
Weekend
726.6900 764.7500 724.7900 762.6300 1,158,300
701.9000 740.0000 694.9800 738.3400 1,460,700
14 · 10-Q Pre-market · 06:52 ET 10-Q ↗ 13 · 8-K Pre-market · 06:48 ET 8-K ↗
699.3800 702.6000 691.0000 695.4200 1,022,100
676.9300 696.7400 676.4600 695.1800 900,200
661.7700 678.1200 659.5300 667.1700 650,800
Weekend
Weekend
658.2900 667.5000 654.0500 656.0100 708,400
646.4800 655.2000 637.8000 651.9100 1,129,400
676.4300 676.8000 648.9000 651.1800 872,200
672.5500 678.6700 666.8700 675.1900 529,400
674.7200 681.7400 669.8800 672.1500 624,800
Weekend
Weekend
676.0500 691.1300 672.3100 676.6900 648,300
666.2800 680.2900 661.3800 678.9400 730,100
656.1100 669.1000 648.6600 664.4500 555,400
658.0000 663.1000 653.3100 656.1200 478,000
661.6300 665.6000 655.1100 663.0900 606,300
Weekend
Weekend
670.0600 676.6600 658.5000 664.5200 581,700
660.8000 669.1600 660.8000 667.9500 672,500
669.1100 670.3500 661.4300 662.8800 746,800
663.1800 677.9200 659.0200 676.2300 918,700
657.9600 657.9600 637.7200 649.8100 714,300
12 · 8-K Pre-market · 07:00 ET FORM 8-K ↗
Weekend
Weekend
No trading
630.5200 654.9400 625.7000 654.2700 1,071,600
629.9000 632.8500 623.8900 624.7200 1,170,600
630.9500 634.0600 622.2900 623.5400 820,900
635.9900 638.3000 626.8600 631.8100 734,400
Weekend
Weekend
623.6400 638.7600 623.4400 632.9000 1,213,600
623.1600 634.3100 619.7000 620.1400 696,800
621.6300 631.1800 619.2700 623.4300 839,900
607.9200 621.7900 607.9200 618.0300 1,279,700
604.4600 613.5600 594.9000 612.5000 1,604,300
Weekend
Weekend
No trading
612.0700 616.2400 598.1900 609.9400 2,609,100
11 · 8-K After-hours · 16:05 ET FORM 8-K ↗
615.1600 620.0000 602.1300 607.9300 1,299,500
615.1800 617.6000 608.2100 614.7300 1,007,500
613.3500 615.9500 608.5900 614.9800 815,900
Weekend
Weekend
613.1100 616.5500 605.0100 612.1400 717,700
604.3100 618.1000 603.5700 611.4800 943,100
619.0700 619.2600 601.2200 601.6500 816,100
624.1700 628.9000 610.9500 616.1800 1,190,600
638.0400 638.9500 608.9800 611.3400 1,259,200
Weekend
Weekend
632.2600 640.8200 632.0900 635.4500 975,800
628.0700 633.8900 621.1100 628.7300 974,700
600.7900 625.0000 599.0000 618.9500 986,700
596.5200 604.6300 591.5200 602.9200 1,066,700
607.5400 614.0000 598.8000 600.6600 1,079,900
Weekend
Weekend
620.1100 624.4700 609.7700 614.7800 2,187,500
630.1500 631.7300 620.3500 621.5200 1,234,400
634.8000 638.0600 625.0000 627.7400 1,913,500
642.4500 648.5000 632.6800 634.6200 889,800
No trading
Weekend
Weekend
639.2400 644.1200 632.7200 638.8800 994,900
645.0000 650.3200 639.8100 642.5900 1,178,500
634.3200 651.0000 633.6000 649.7600 1,165,600
630.4900 639.9900 616.0200 630.3000 1,445,100
615.9300 633.0000 610.6000 629.6800 2,996,600
Weekend
Weekend
712.6900 717.8900 693.7000 698.2500 728,000
719.0000 722.5100 710.0600 712.8700 767,200
721.2900 730.5900 709.5100 719.8800 879,300
716.3900 725.6000 710.0200 723.4100 824,300
714.9900 727.3900 701.9900 712.7700 1,227,200
Weekend
Weekend
709.2900 717.9900 708.3600 714.8900 589,000
718.5000 725.3100 707.4300 709.1000 774,600
703.3300 726.1600 702.5000 721.0500 739,900
710.7300 715.6200 699.2300 702.2700 642,700
702.5600 711.5500 699.7500 709.2100 554,100
Weekend
Weekend
703.0200 714.4800 700.2600 701.4200 729,100
693.0800 708.4400 688.9500 707.0600 1,096,500
705.1100 708.8000 668.8500 686.3600 1,835,000
10 · 10-Q Pre-market · 06:54 ET 10-Q ↗ 9 · 8-K Pre-market · 06:50 ET 8-K ↗
751.3700 754.0000 730.9000 731.7700 569,000
745.4700 756.4000 743.6100 744.4400 603,200
Weekend
Weekend
8 · DEFA14A After-hours · 16:04 ET DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS ↗ 7 · DEF 14A After-hours · 16:02 ET DEFINITIVE PROXY STATEMENT ↗
760.0000 761.9600 736.7100 751.5700 809,500
750.9900 767.2100 747.2600 766.0200 928,700
751.4800 755.7800 740.4700 746.5800 901,900
746.2000 751.5400 734.1200 747.3600 707,400
750.0000 755.5900 744.0000 749.4100 493,800
Weekend
Weekend
754.7400 758.6100 746.9100 750.5700 513,000
749.5600 756.0000 742.6900 746.0000 505,000
758.6700 760.5800 739.1200 753.9300 571,100
744.9700 757.6800 743.7100 755.5100 637,800
747.7400 756.9000 737.3400 746.4600 747,000
Weekend
Weekend
771.4800 771.4800 739.0900 748.8700 751,300
764.1500 772.4500 761.5000 767.8500 596,700
765.2600 775.6300 755.9900 775.5300 580,400
6 · 8-K Pre-market · 07:05 ET FORM 8-K ↗
758.4000 761.9100 747.7600 760.2700 620,900
766.8300 768.8000 758.4900 763.0400 460,400
Weekend
Weekend
No trading
767.0400 770.1100 745.0000 761.8500 1,000,600
775.0000 781.2100 769.9700 777.2500 627,400
757.4700 774.2600 755.8000 772.6400 642,600
743.8300 757.6800 741.4700 749.2900 630,400
Weekend
Weekend
756.6500 759.4700 736.6400 737.7100 492,200
749.4000 761.7300 747.7700 756.7300 488,600
744.6700 757.9800 744.0200 749.4700 553,100
728.5100 743.1700 727.9600 741.6900 507,900
745.0000 750.0000 735.0000 736.5300 535,900
Weekend
Weekend
738.1700 744.8500 728.6400 732.8700 1,359,900
744.5000 750.3200 727.8800 737.4500 628,300
751.2200 757.6000 734.5600 744.1200 672,500
763.5300 771.2300 755.6400 759.0500 437,000
750.0000 763.3000 747.0100 756.9100 396,200
Weekend
Weekend
754.5500 758.9800 741.9000 745.7700 438,100
764.0600 766.0000 744.0000 746.6100 630,400
769.1700 783.1200 765.0000 774.6600 405,200
781.6700 788.6900 771.3400 772.0300 473,300
759.8600 783.7000 754.9100 781.6000 697,100
Weekend
Weekend
755.0100 762.4000 746.6600 759.8600 561,900
780.0000 781.9900 760.0100 764.9300 657,500
767.0500 791.6000 764.2400 787.5000 641,400
781.0100 794.7700 764.4900 766.6600 637,200
771.1000 793.1600 769.6300 790.8100 793,100
Weekend
Weekend
760.9100 786.6800 760.9100 781.6700 726,400
784.2800 784.5000 753.7900 770.7900 772,700
774.1300 791.1100 771.4300 784.2800 750,900
780.4700 792.6700 768.7500 772.1900 628,700
777.5800 792.1600 777.5800 787.0400 510,500
Weekend
Weekend
775.0000 781.4600 770.0000 779.6700 615,100
790.0000 790.0000 773.3100 782.3800 504,800
793.5300 797.0000 786.7900 792.1600 675,900
803.4800 815.0000 783.6200 793.5300 747,100
No trading
Weekend
Weekend
788.9200 806.1800 785.0000 803.1700 974,700
784.8000 796.7200 774.7200 783.6500 814,300
750.8500 781.4200 745.0700 778.9700 1,123,600
779.7300 781.4000 753.1000 754.9100 792,600
783.1700 790.0000 775.5000 780.2800 586,800
Weekend
Weekend
769.6300 786.9900 764.7800 785.5100 671,400
777.8300 790.0000 760.0000 766.6300 976,500
765.8000 779.7800 765.2100 775.0600 952,000
5 · 10-K Pre-market · 09:08 ET 10-K ↗
745.5300 773.7200 742.7400 759.1800 768,700
732.9200 763.5600 731.5100 755.0200 693,000
Weekend
Weekend
753.9600 774.3700 735.6100 741.4500 1,317,500
4 · 8-K Pre-market · 06:51 ET 8-K ↗
755.7300 755.7300 742.8000 749.4400 925,800
765.1500 766.9900 747.5700 751.1300 827,900
762.4700 776.2500 761.5000 771.2500 645,800
750.0900 767.3000 750.0900 762.6500 934,200
Weekend
Weekend
757.3100 762.0000 747.3000 753.5500 721,000
750.3400 765.0000 747.3700 755.5100 765,400
736.7100 750.0000 735.0000 749.3300 788,400
729.4000 737.8700 718.3800 733.7800 789,100
No trading
Weekend
Weekend
749.0900 749.0900 726.4300 733.0400 1,682,400
754.8500 756.5000 737.0000 741.9200 865,600
760.5800 766.6400 753.0100 754.1400 668,900
765.1600 765.9900 743.9400 758.9100 946,500
810.0000 811.0900 765.0800 768.0000 1,321,100
3 · 8-K Pre-market · 06:48 ET FORM 8-K ↗
Weekend
Weekend
802.9700 821.1100 790.8800 796.5500 711,500
805.8100 816.9900 800.6800 801.0100 1,049,300
786.1800 814.1000 780.1000 812.2700 1,264,700
764.3500 787.6600 763.2000 776.5400 935,000
769.7200 771.9900 753.2000 763.2300 835,700
Weekend
Weekend
774.2500 779.7500 765.7700 776.3100 464,800
No trading
772.0000 775.0000 769.1700 771.8700 354,800
776.3000 777.7700 770.3000 773.9400 383,200
780.5600 785.0500 774.6000 780.5000 545,100
Weekend
Weekend
783.7900 788.0100 778.0400 784.9700 321,000
No trading
787.9900 792.7700 783.6100 783.7100 267,200
777.3600 792.7500 777.0000 785.1700 832,000
765.8400 783.6000 765.0900 779.3600 818,000
Weekend
Weekend
753.7200 773.8500 748.1800 767.9600 2,335,900
747.5400 752.8400 739.2300 748.7100 1,057,600
746.5500 751.9900 743.3300 749.7900 765,900
752.5700 757.3500 734.7200 746.3600 713,200
748.8500 756.6700 746.3800 752.6200 932,800
Weekend
Weekend
741.5900 746.0500 734.3800 741.2900 804,800
726.0800 753.6100 726.0800 746.8000 1,153,900
695.0600 728.0000 692.5000 726.2100 1,316,500
705.1100 711.1500 691.8600 692.5800 604,400
723.6900 724.1300 701.7500 703.2600 1,005,900
Weekend
Weekend
723.0000 736.1500 717.2600 718.3600 798,300
732.4500 735.0000 721.2200 722.8000 1,067,100
730.3600 744.2300 720.0700 723.6700 1,238,500
742.1200 747.0000 731.0000 742.0000 924,600
775.6000 779.9200 748.1500 750.1100 992,000
Weekend
Weekend
784.7000 788.9800 779.5000 780.1900 510,400
No trading
785.7200 790.9800 777.0000 784.6100 871,700
764.8800 790.5700 760.0100 787.3200 1,200,400
759.0500 773.1300 756.6400 761.4500 1,554,900
Weekend
Weekend
736.0100 764.0900 735.7400 755.9000 1,427,700
725.0000 753.5100 720.0200 737.0000 2,296,800
727.8100 727.8100 702.6300 702.7500 1,383,600
702.5100 727.9700 699.2200 725.3400 1,368,700
693.3400 711.8800 692.2900 704.3100 1,132,900
Weekend
Weekend
697.1900 699.2700 685.9500 693.5000 907,000
683.0000 713.5800 679.9300 694.9900 1,505,300
678.8900 690.7800 672.6700 681.7200 1,208,300
651.4800 676.3300 651.3800 674.5500 977,200
656.0000 665.9900 653.1900 654.7400 824,800
Weekend
Weekend
650.3500 658.2100 640.9900 657.5300 782,800
640.8300 657.0000 640.8300 646.8700 916,600
631.1000 646.8900 628.0000 644.1900 724,300
643.7800 646.2200 625.1400 628.0000 1,030,900
657.4600 657.4600 627.5000 642.2500 810,300
Weekend
Weekend
649.4500 660.0000 645.0000 651.8000 797,900
645.5600 664.0000 643.9200 654.0400 1,120,700
650.4100 659.9800 637.6600 652.9100 1,751,500
612.0200 655.7000 605.0300 654.4800 2,126,800
2 · 10-Q Pre-market · 06:56 ET 10-Q ↗ 1 · 8-K Pre-market · 06:50 ET 8-K ↗
580.5000 586.1500 575.9300 585.3100 1,246,100
Weekend
Weekend
579.6500 582.7000 576.2000 577.9500 875,400

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

16 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 11:51 ET Summarise
15 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 20:14 ET Summarise
14 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 06:52 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:48 ET Summarise
12 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:00 ET Summarise
11 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
10 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 06:54 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:50 ET Summarise
8 DEFA14A DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
7 DEF 14A DEFINITIVE PROXY STATEMENT (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
6 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
5 10-K 10-K (opens SEC filing in a new tab) Pre-market · 09:08 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:51 ET Summarise
3 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 06:48 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 06:56 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:50 ET Summarise