NASDAQ:RBBN | Historical Stock Price | Ribbon Communications 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
2000-05-25 to 2026-09-04
Data captured

Stock Price Chart

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

$1.09$3.47$11.03$35.04$111.33$353.722000-05-252026-08-27

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

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Historical Stock Price — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$6.05$6.05180,800
2021-12-30$6.07$6.07186,500
2021-12-29$6.10$6.10195,500
2021-12-28$6.08$6.08206,300
2021-12-27$6.20$6.20136,400
2021-12-23$6.08$6.08252,600
2021-12-22$6.10$6.10302,000
2021-12-21$6.20$6.20302,300
2021-12-20$6.06$6.06574,900
2021-12-17$6.27$6.271,907,700
2021-12-16$5.97$5.97327,000
2021-12-15$5.93$5.93339,200
2021-12-14$5.80$5.80359,500
2021-12-13$5.76$5.76542,500
2021-12-10$5.58$5.58487,400
2021-12-09$5.68$5.681,353,300
2021-12-08$5.68$5.68237,900
2021-12-07$5.58$5.58219,100
2021-12-06$5.42$5.42257,100
2021-12-03$5.39$5.39238,600
2021-12-02$5.48$5.48245,100
2021-12-01$5.23$5.23209,000
2021-11-30$5.45$5.45261,300
2021-11-29$5.53$5.53233,000
2021-11-26$5.60$5.60183,000
2021-11-24$5.89$5.89105,200
2021-11-23$5.80$5.80203,100
2021-11-22$5.77$5.77309,100
2021-11-19$5.78$5.78242,700
2021-11-18$5.87$5.87246,200
2021-11-17$6.04$6.04202,300
2021-11-16$6.11$6.11164,300
2021-11-15$6.11$6.11163,700
2021-11-12$6.20$6.20144,200
2021-11-11$6.04$6.04262,500
2021-11-10$6.05$6.05310,500
2021-11-09$6.20$6.20215,700
2021-11-08$6.17$6.17315,000
2021-11-05$6.06$6.06423,600
2021-11-04$6.03$6.03296,500
2021-11-03$5.98$5.98329,000
2021-11-02$5.80$5.80297,700
2021-11-01$5.73$5.73422,500
2021-10-29$5.47$5.47341,500
2021-10-28$5.32$5.321,508,300
2021-10-27$5.86$5.86406,600
2021-10-26$5.99$5.99310,300
2021-10-25$5.84$5.84460,400
2021-10-22$5.92$5.92403,700
2021-10-21$6.28$6.28318,300
2021-10-20$6.33$6.33247,300
2021-10-19$6.22$6.22256,100
2021-10-18$6.17$6.17170,100
2021-10-15$6.20$6.20289,400
2021-10-14$6.35$6.35237,400
2021-10-13$6.25$6.25133,000
2021-10-12$6.14$6.14191,900
2021-10-11$6.06$6.06120,200
2021-10-08$6.10$6.10118,500
2021-10-07$6.14$6.14224,400
2021-10-06$5.96$5.96213,300
2021-10-05$5.95$5.95164,600
2021-10-04$5.93$5.93236,000
2021-10-01$6.08$6.08391,300
2021-09-30$5.98$5.98281,100
2021-09-29$5.97$5.97332,200
2021-09-28$5.87$5.87301,400
2021-09-27$6.13$6.13344,700
2021-09-24$6.05$6.05161,000
2021-09-23$6.10$6.10204,400
2021-09-22$5.94$5.94213,000
2021-09-21$5.81$5.81250,200
2021-09-20$6.02$6.02317,000
2021-09-17$6.22$6.221,318,900
2021-09-16$6.21$6.21303,000
2021-09-15$6.28$6.28247,900
2021-09-14$6.26$6.26235,900
2021-09-13$6.32$6.32446,900
2021-09-10$6.03$6.031,061,800
2021-09-09$6.24$6.24334,400
2021-09-08$6.21$6.21348,100
2021-09-07$6.47$6.47263,300
2021-09-03$6.55$6.55254,300
2021-09-02$6.52$6.52222,300
2021-09-01$6.50$6.50248,800
2021-08-31$6.53$6.53298,300
2021-08-30$6.61$6.61345,700
2021-08-27$6.79$6.79422,100
2021-08-26$6.63$6.63157,200
2021-08-25$6.66$6.66345,000
2021-08-24$6.69$6.69189,000
2021-08-23$6.57$6.57317,200
2021-08-20$6.47$6.47747,200
2021-08-19$6.17$6.17328,900
2021-08-18$6.22$6.22347,300
2021-08-17$6.34$6.34827,500
2021-08-16$6.67$6.67370,700
2021-08-13$7.11$7.11362,900
2021-08-12$7.35$7.35237,200
2021-08-11$7.40$7.40669,500
2021-08-10$7.37$7.372,194,100
2021-08-09$7.26$7.26507,000
2021-08-06$7.06$7.061,027,800
2021-08-05$6.80$6.80294,600
2021-08-04$6.90$6.90414,900
2021-08-03$6.86$6.86307,700
2021-08-02$6.81$6.81243,400
2021-07-30$6.91$6.91293,600
2021-07-29$7.06$7.06466,700
2021-07-28$7.06$7.06427,100
2021-07-27$7.03$7.03350,400
2021-07-26$7.34$7.34362,400
2021-07-23$7.28$7.28232,800
2021-07-22$7.25$7.25170,000
2021-07-21$7.41$7.41184,900
2021-07-20$7.24$7.24398,600
2021-07-19$7.03$7.03261,500
2021-07-16$7.03$7.03183,100
2021-07-15$7.17$7.17371,900
2021-07-14$7.38$7.38178,700
2021-07-13$7.47$7.47280,300
2021-07-12$7.63$7.63220,200
2021-07-09$7.60$7.60176,700
2021-07-08$7.44$7.44248,700
2021-07-07$7.42$7.42234,100
2021-07-06$7.37$7.37170,900
2021-07-02$7.47$7.47117,400
2021-07-01$7.63$7.63142,000
2021-06-30$7.61$7.61222,800
2021-06-29$7.70$7.70147,300
2021-06-28$7.82$7.82191,100
2021-06-25$7.81$7.81625,600
2021-06-24$7.89$7.89184,000
2021-06-23$7.73$7.73439,200
2021-06-22$7.65$7.65221,900
2021-06-21$7.55$7.55318,500
2021-06-18$7.40$7.402,014,000
2021-06-17$8.06$8.06440,000
2021-06-16$8.14$8.14307,600
2021-06-15$8.11$8.11275,900
2021-06-14$8.25$8.25515,800
2021-06-11$8.08$8.08189,100
2021-06-10$7.92$7.92201,100
2021-06-09$7.93$7.93309,300
2021-06-08$7.99$7.99354,500
2021-06-07$7.96$7.96638,300
2021-06-04$7.63$7.63258,300
2021-06-03$7.52$7.52218,600
2021-06-02$7.58$7.58224,900
2021-06-01$7.44$7.44347,400
2021-05-28$7.44$7.44312,900
2021-05-27$7.38$7.38633,100
2021-05-26$7.29$7.29332,400
2021-05-25$7.11$7.11427,500
2021-05-24$7.37$7.37296,600
2021-05-21$7.25$7.25280,700
2021-05-20$7.32$7.32294,700
2021-05-19$7.10$7.10252,400
2021-05-18$7.10$7.10326,600
2021-05-17$6.94$6.94228,300
2021-05-14$6.97$6.97353,000
2021-05-13$6.77$6.77450,100
2021-05-12$6.69$6.69508,400
2021-05-11$6.96$6.96584,800
2021-05-10$6.73$6.73798,300
2021-05-07$6.90$6.90483,200
2021-05-06$6.62$6.62444,100
2021-05-05$6.51$6.51548,800
2021-05-04$6.39$6.39452,500
2021-05-03$6.51$6.51645,000
2021-04-30$6.75$6.751,521,700
2021-04-29$7.17$7.172,130,200
2021-04-28$8.14$8.14477,300
2021-04-27$8.15$8.15369,700
2021-04-26$8.21$8.21316,000
2021-04-23$8.04$8.04244,000
2021-04-22$7.91$7.91367,900
2021-04-21$8.05$8.05489,900
2021-04-20$7.87$7.87478,800
2021-04-19$8.07$8.07537,600
2021-04-16$8.45$8.45249,800
2021-04-15$8.47$8.47246,900
2021-04-14$8.45$8.45366,200
2021-04-13$8.53$8.53344,700
2021-04-12$8.51$8.51271,900
2021-04-09$8.55$8.55285,100
2021-04-08$8.59$8.59511,700
2021-04-07$8.19$8.19265,900
2021-04-06$8.25$8.25361,700
2021-04-05$8.26$8.26445,200
2021-04-01$8.44$8.44661,800
2021-03-31$8.21$8.21686,200
2021-03-30$8.21$8.21397,100
2021-03-29$7.89$7.89524,600
2021-03-26$8.09$8.09538,200
2021-03-25$8.06$8.06539,100
2021-03-24$7.87$7.87458,600
2021-03-23$8.15$8.15489,400
2021-03-22$8.63$8.63435,700
2021-03-19$8.71$8.711,680,900
2021-03-18$8.52$8.52643,300
2021-03-17$8.92$8.92704,100
2021-03-16$8.57$8.57669,300
2021-03-15$8.65$8.65908,400
2021-03-12$8.37$8.37551,000
2021-03-11$8.20$8.20629,600
2021-03-10$8.02$8.02681,400
2021-03-09$8.00$8.00802,200
2021-03-08$7.78$7.781,272,100
2021-03-05$8.01$8.011,225,600
2021-03-04$7.91$7.911,460,300
2021-03-03$8.07$8.071,059,100
2021-03-02$8.41$8.417,950,200
2021-03-01$8.78$8.781,503,200
2021-02-26$8.64$8.641,672,300
2021-02-25$9.12$9.12600,400
2021-02-24$9.42$9.42441,400
2021-02-23$9.41$9.41922,100
2021-02-22$9.07$9.071,018,500
2021-02-19$9.63$9.631,052,500
2021-02-18$10.15$10.151,552,500
2021-02-17$10.94$10.94731,900
2021-02-16$11.14$11.14776,600
2021-02-12$10.54$10.54643,400
2021-02-11$9.98$9.98495,000
2021-02-10$10.15$10.15814,300
2021-02-09$10.75$10.751,501,900
2021-02-08$10.61$10.612,913,300
2021-02-05$8.86$8.86735,100
2021-02-04$8.77$8.77869,700
2021-02-03$8.37$8.37515,400
2021-02-02$8.14$8.14601,500
2021-02-01$8.00$8.001,384,200
2021-01-29$7.31$7.31493,000
2021-01-28$7.48$7.48497,200
2021-01-27$7.79$7.79815,300
2021-01-26$7.31$7.31767,600
2021-01-25$7.19$7.19658,200
2021-01-22$6.81$6.81593,800
2021-01-21$6.97$6.97302,500
2021-01-20$7.08$7.08359,800
2021-01-19$6.91$6.91250,600
2021-01-15$6.79$6.79254,300
2021-01-14$7.01$7.01278,900
2021-01-13$6.85$6.85276,800
2021-01-12$7.14$7.14235,600
2021-01-11$7.05$7.05251,400
2021-01-08$6.89$6.89340,200
2021-01-07$7.10$7.10450,600
2021-01-06$6.51$6.51506,100
2021-01-05$6.57$6.57396,300
2021-01-04$6.35$6.35372,300