NASDAQ:REGN | Historical Stock Price | REGENERON PHARMACEUTICALS, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1991-04-02 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.27$10.74$35.35$116.32$382.72$1,259.251991-04-022026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 1991

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1991-12-31$18.13$18.12150,300
1991-12-30$17.25$17.2565,500
1991-12-27$17.50$17.5018,700
1991-12-26$18.00$18.0033,900
1991-12-24$17.50$17.5053,100
1991-12-23$16.75$16.7566,300
1991-12-20$16.50$16.5089,600
1991-12-19$16.75$16.7574,700
1991-12-18$17.00$17.0053,000
1991-12-17$17.00$17.00250,600
1991-12-16$15.50$15.50119,200
1991-12-13$15.75$15.75130,400
1991-12-12$14.75$14.7531,600
1991-12-11$14.63$14.6219,700
1991-12-10$15.00$15.0027,300
1991-12-09$16.00$16.005,300
1991-12-06$16.25$16.258,000
1991-12-05$15.75$15.7557,800
1991-12-04$15.75$15.7584,700
1991-12-03$15.75$15.7520,100
1991-12-02$15.75$15.7545,900
1991-11-29$15.75$15.7541,500
1991-11-27$14.75$14.7525,700
1991-11-26$14.25$14.25125,800
1991-11-25$14.75$14.7589,400
1991-11-22$14.38$14.37139,500
1991-11-21$14.50$14.50143,300
1991-11-20$15.25$15.25199,400
1991-11-19$15.13$15.12217,800
1991-11-18$15.75$15.75396,800
1991-11-15$14.75$14.75599,100
1991-11-14$18.50$18.50668,400
1991-11-13$19.75$19.75217,700
1991-11-12$20.00$20.00579,000
1991-11-11$20.50$20.50925,300
1991-11-08$20.00$20.00646,600
1991-11-07$19.25$19.25176,400
1991-11-06$18.00$18.0059,300
1991-11-05$17.88$17.8771,900
1991-11-04$17.75$17.7566,400
1991-11-01$19.00$19.00120,500
1991-10-31$19.25$19.2599,300
1991-10-30$19.50$19.50240,200
1991-10-29$17.75$17.7515,500
1991-10-28$18.00$18.0024,600
1991-10-25$18.13$18.12235,500
1991-10-24$17.50$17.50524,600
1991-10-23$18.50$18.50633,000
1991-10-22$18.75$18.75260,900
1991-10-21$17.75$17.7568,100
1991-10-18$17.25$17.25141,400
1991-10-17$17.00$17.00129,100
1991-10-16$18.25$18.25349,800
1991-10-15$17.50$17.50377,800
1991-10-14$16.00$16.0058,900
1991-10-11$15.75$15.75176,300
1991-10-10$16.00$16.00343,400
1991-10-09$16.13$16.12235,500
1991-10-08$15.50$15.5022,300
1991-10-07$15.00$15.0061,300
1991-10-04$15.75$15.75183,500
1991-10-03$15.25$15.25101,800
1991-10-02$15.00$15.00107,300
1991-10-01$14.25$14.25134,600
1991-09-30$14.75$14.7579,400
1991-09-27$14.75$14.7591,400
1991-09-26$14.25$14.25136,700
1991-09-25$14.50$14.5040,300
1991-09-24$14.50$14.50210,700
1991-09-23$15.00$15.00274,000
1991-09-20$16.13$16.12533,100
1991-09-19$16.00$16.00879,400
1991-09-18$12.63$12.62123,300
1991-09-17$13.00$13.0031,900
1991-09-16$13.00$13.0054,200
1991-09-13$13.25$13.2566,500
1991-09-12$13.13$13.12177,000
1991-09-11$12.25$12.2539,900
1991-09-10$12.50$12.5066,100
1991-09-09$12.75$12.7555,300
1991-09-06$12.88$12.88249,300
1991-09-05$13.38$13.38196,100
1991-09-04$12.88$12.8899,500
1991-09-03$12.38$12.37270,400
1991-08-30$11.50$11.50124,000
1991-08-29$12.00$12.00516,600
1991-08-28$10.50$10.5089,700
1991-08-27$10.38$10.3732,700
1991-08-26$10.50$10.5024,300
1991-08-23$10.50$10.5040,100
1991-08-22$10.50$10.5038,700
1991-08-21$10.63$10.62103,900
1991-08-20$10.38$10.3737,900
1991-08-19$10.13$10.1258,600
1991-08-16$10.88$10.8732,900
1991-08-15$10.75$10.75180,400
1991-08-14$10.25$10.2549,000
1991-08-13$10.63$10.6215,900
1991-08-12$10.63$10.6210,900
1991-08-09$10.63$10.6234,300
1991-08-08$10.75$10.7525,800
1991-08-07$10.88$10.8710,400
1991-08-06$10.75$10.7591,300
1991-08-05$11.50$11.503,700
1991-08-02$11.25$11.2517,600
1991-08-01$11.25$11.2528,400
1991-07-31$11.50$11.5083,200
1991-07-30$10.63$10.62108,100
1991-07-29$10.25$10.254,400
1991-07-26$10.25$10.2516,200
1991-07-25$9.88$9.8750,400
1991-07-24$10.25$10.2514,400
1991-07-23$10.50$10.509,700
1991-07-22$10.50$10.5068,700
1991-07-19$11.00$11.0014,300
1991-07-18$11.00$11.0038,400
1991-07-17$10.75$10.7547,500
1991-07-16$10.75$10.7539,000
1991-07-15$11.25$11.2536,800
1991-07-12$10.50$10.5040,600
1991-07-11$10.88$10.8715,400
1991-07-10$10.50$10.5011,500
1991-07-09$10.75$10.7545,100
1991-07-08$10.25$10.2544,400
1991-07-05$10.25$10.2543,900
1991-07-03$10.50$10.5038,200
1991-07-02$10.63$10.6243,900
1991-07-01$11.13$11.1215,900
1991-06-28$11.13$11.1259,700
1991-06-27$11.25$11.2516,200
1991-06-26$11.00$11.0091,800
1991-06-25$11.13$11.1248,000
1991-06-24$11.50$11.5078,300
1991-06-21$12.00$12.0048,200
1991-06-20$12.00$12.0058,900
1991-06-19$11.50$11.5027,700
1991-06-18$11.25$11.25130,100
1991-06-17$10.88$10.8720,400
1991-06-14$11.00$11.00152,800
1991-06-13$10.38$10.3759,600
1991-06-12$11.00$11.00113,400
1991-06-11$11.63$11.6226,800
1991-06-10$11.63$11.6269,400
1991-06-07$11.63$11.6232,500
1991-06-06$11.88$11.8713,200
1991-06-05$11.88$11.8748,900
1991-06-04$12.13$12.1359,800
1991-06-03$11.75$11.75102,400
1991-05-31$12.25$12.2585,200
1991-05-30$12.25$12.25253,200
1991-05-29$12.63$12.62245,700
1991-05-28$12.00$12.0016,900
1991-05-24$12.25$12.2514,600
1991-05-23$11.88$11.87135,900
1991-05-22$12.13$12.13184,200
1991-05-21$12.25$12.25139,700
1991-05-20$11.38$11.3883,000
1991-05-17$11.75$11.7575,000
1991-05-16$11.25$11.25230,000
1991-05-15$10.75$10.75186,200
1991-05-14$11.88$11.87173,200
1991-05-13$11.50$11.50137,900
1991-05-10$12.75$12.75125,200
1991-05-09$13.63$13.6225,700
1991-05-08$13.25$13.25162,600
1991-05-07$13.38$13.38146,100
1991-05-06$13.63$13.62163,700
1991-05-03$13.38$13.3865,300
1991-05-02$13.50$13.50153,900
1991-05-01$13.50$13.50237,800
1991-04-30$12.63$12.62330,000
1991-04-29$12.50$12.50183,700
1991-04-26$14.38$14.37122,600
1991-04-25$14.50$14.50115,400
1991-04-24$14.75$14.7590,500
1991-04-23$14.25$14.25335,000
1991-04-22$14.13$14.1279,000
1991-04-19$14.88$14.8868,900
1991-04-18$15.25$15.25320,300
1991-04-17$15.25$15.25187,600
1991-04-16$16.13$16.12130,500
1991-04-15$16.13$16.12171,400
1991-04-12$16.25$16.25329,700
1991-04-11$14.75$14.75319,400
1991-04-10$15.88$15.88582,100
1991-04-09$16.00$16.00319,000
1991-04-08$17.63$17.63200,100
1991-04-05$17.75$17.75238,200
1991-04-04$18.00$18.00810,600
1991-04-03$18.25$18.251,716,100
1991-04-02$21.13$21.132,294,100