Ribbon Communications Inc RBBN

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Ribbon Communications Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 2.0100 · FX 1 USD = 1.289800 SGD · about SGD 2.5925 per unit

Sign in to place simulated trades. 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 3.83 → 2.01 · -47.5%
4.1603.0551.950 1 2 3 4 5 6 7 8 9 10 11 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 26 Jul 2025 — 27 Jul 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.

No data yet
Weekend
Weekend
2.0200 2.0500 1.9800 2.0100 806,800
2.1600 2.1700 1.9800 2.0200 1,106,700
2.2400 2.2700 2.1500 2.1600 630,900
2.1300 2.2800 2.1300 2.2700 539,600
2.2100 2.2400 2.1100 2.1100 587,600
Weekend
Weekend
2.0900 2.2500 2.0800 2.2000 889,700
2.1800 2.1800 2.1000 2.1500 489,800
2.3500 2.4400 2.1800 2.1900 726,700
2.2900 2.4400 2.2600 2.3400 2,606,900
2.3100 2.3700 2.2800 2.2800 388,100
Weekend
Weekend
2.2200 2.3400 2.2200 2.3200 481,600
2.2200 2.3200 2.2200 2.2700 593,300
2.1000 2.2200 2.0800 2.2100 880,100
2.2300 2.2300 2.1100 2.1200 743,600
2.1800 2.2800 2.1700 2.2100 556,900
Weekend
Weekend
No trading
2.3500 2.3700 2.1300 2.1400 710,100
2.3000 2.4000 2.3000 2.3500 614,200
2.2400 2.3500 2.2200 2.3400 613,500
2.2100 2.2400 2.1200 2.2200 608,200
Weekend
Weekend
2.2300 2.2500 2.1700 2.2000 1,735,700
2.3500 2.4000 2.2100 2.2500 734,800
2.4200 2.4300 2.3000 2.3100 693,700
2.4500 2.4800 2.4000 2.4000 416,100
2.5400 2.5800 2.4300 2.4900 745,300
Weekend
Weekend
No trading
2.6000 2.6400 2.5100 2.5600 1,160,800
2.6200 2.6600 2.5500 2.5600 943,300
11 · 8-K Pre-market · 09:19 ET FORM 8-K ↗
2.7300 2.8000 2.6000 2.6100 1,052,200
2.7500 2.7800 2.6900 2.7200 428,100
Weekend
Weekend
2.7000 2.7300 2.6100 2.6900 719,100
2.6400 2.7000 2.5800 2.7000 582,900
2.6400 2.6900 2.6000 2.6200 636,600
2.9200 2.9600 2.6200 2.6600 885,600
2.8600 2.9600 2.8400 2.8800 577,000
Weekend
Weekend
10 · 8-K After-hours · 16:15 ET FORM 8-K ↗
3.0200 3.0900 2.8100 2.8300 902,400
3.0900 3.1000 2.9800 3.0700 785,000
3.3000 3.3000 3.1100 3.1200 899,400
3.1000 3.4100 3.0900 3.3400 1,733,800
3.0600 3.1000 2.9700 3.0900 712,500
Weekend
Weekend
3.0700 3.1000 2.9800 3.0800 1,095,100
3.1000 3.2700 2.9700 3.0800 3,498,000
2.8400 3.1500 2.7200 3.1100 2,308,800
2.7900 2.8900 2.7400 2.8300 1,676,800
No trading
Weekend
Weekend
2.6600 2.7900 2.6600 2.7900 2,030,100
2.5600 2.7000 2.5300 2.6500 849,600
2.6400 2.6900 2.5900 2.6100 743,600
2.6100 2.7700 2.6000 2.6600 838,200
2.6000 2.7300 2.5500 2.6400 890,500
Weekend
Weekend
2.5500 2.5800 2.4300 2.5700 1,000,500
2.6600 2.7600 2.6200 2.6300 716,900
2.5300 2.6300 2.5300 2.6000 530,500
2.6300 2.6700 2.4800 2.5500 663,700
2.7600 2.7700 2.6300 2.6300 870,000
Weekend
Weekend
2.6800 2.8000 2.6500 2.7800 673,500
2.6900 2.7800 2.6500 2.6900 541,300
9 · 10-Q After market open · 12:49 ET 10-Q ↗
2.7500 2.7700 2.6600 2.6800 521,600
2.6700 2.7600 2.6700 2.7300 503,200
2.7400 2.7800 2.6600 2.6700 649,100
Weekend
Weekend
2.6500 2.7700 2.5800 2.7500 863,900
2.4000 2.6400 2.3900 2.6400 1,307,800
2.5000 2.5900 2.2900 2.3800 2,087,800
8 · 8-K After-hours · 16:15 ET FORM 8-K ↗
2.6600 2.6600 2.5600 2.6000 1,004,300
2.8000 2.8000 2.6400 2.6600 599,800
Weekend
Weekend
2.7300 2.8100 2.7000 2.7800 961,200
2.7100 2.7800 2.6500 2.7100 653,600
3.1000 3.1300 2.7300 2.7500 1,935,600
2.8700 3.0800 2.8600 3.0600 1,322,400
2.7800 2.8800 2.7700 2.8700 758,100
Weekend
Weekend
2.7700 2.8300 2.7500 2.8100 843,000
7 · DEF 14A Pre-market · 08:30 ET DEF 14A ↗
2.6800 2.7500 2.6400 2.7100 1,283,700
2.5100 2.6300 2.4700 2.6200 1,054,000
6 · 8-K Pre-market · 08:45 ET FORM 8-K ↗
2.3800 2.4900 2.3600 2.4800 1,458,500
2.4700 2.5000 2.3500 2.3800 1,456,700
Weekend
Weekend
2.2600 2.5000 2.2400 2.4700 2,813,700
2.2400 2.2600 2.2000 2.2500 539,600
2.3600 2.3900 2.2000 2.2400 891,800
2.2100 2.3100 2.2100 2.2500 768,500
2.1800 2.2700 2.1800 2.2400 669,500
Weekend
Weekend
No trading
2.1300 2.2400 2.1200 2.1800 508,400
2.1500 2.2300 2.1400 2.1900 394,000
2.1000 2.1400 2.0600 2.1200 426,000
2.1400 2.1500 2.0400 2.0800 532,000
Weekend
Weekend
2.1300 2.1500 2.1000 2.1300 368,900
2.1600 2.2100 2.1300 2.1400 521,400
2.2200 2.2300 2.1700 2.2000 392,400
2.2200 2.2700 2.1900 2.1900 538,800
2.1800 2.2600 2.1500 2.2500 494,000
Weekend
Weekend
2.2300 2.2300 2.1100 2.1100 764,100
2.1800 2.2200 2.1500 2.2000 378,500
2.1800 2.2200 2.1700 2.1900 591,100
2.1800 2.2100 2.1500 2.2000 628,900
2.1300 2.1900 2.1100 2.1700 806,200
Weekend
Weekend
2.1400 2.1600 2.0700 2.1000 756,500
2.2100 2.2100 2.1300 2.1500 905,700
2.2200 2.3100 2.2100 2.2500 487,000
2.2000 2.2900 2.2000 2.2500 1,004,000
2.1300 2.2100 2.0800 2.1900 682,000
Weekend
Weekend
2.2100 2.2500 2.1300 2.1500 645,900
2.3500 2.3700 2.2400 2.2600 671,200
2.3400 2.4300 2.3300 2.3700 791,100
2.3400 2.3600 2.2600 2.3300 709,200
2.2300 2.4600 2.2300 2.4300 1,073,800
Weekend
Weekend
2.2500 2.2900 2.1900 2.2300 3,996,600
5 · 10-K After market open · 12:38 ET 10-K ↗
2.2600 2.2800 2.2000 2.2600 936,500
2.3200 2.3300 2.2300 2.2800 987,900
2.0600 2.2200 2.0600 2.2000 879,900
2.0800 2.1000 2.0400 2.0600 519,400
Weekend
Weekend
2.0300 2.1000 2.0100 2.0800 708,700
2.0000 2.0400 1.9900 2.0300 627,500
2.0500 2.0700 1.9800 2.0200 848,100
2.0900 2.1300 2.0200 2.0500 879,400
No trading
Weekend
Weekend
1.9300 2.1200 1.9200 2.0900 1,583,600
1.9500 1.9800 1.8700 1.9500 1,069,700
2.0100 2.0300 1.8900 1.9700 1,349,600
2.0000 2.0900 1.9800 2.0300 1,416,800
1.9700 2.0500 1.9300 2.0000 1,311,300
Weekend
Weekend
2.1000 2.1000 1.8000 1.9600 6,563,100
4 · 8-K After-hours · 16:15 ET FORM 8-K ↗
2.6700 2.7500 2.6200 2.7200 829,100
2.7700 2.8800 2.6700 2.6900 595,300
2.7900 2.8100 2.7000 2.7600 395,600
2.6100 2.8300 2.6100 2.7600 473,000
Weekend
Weekend
2.6700 2.7200 2.6000 2.6200 475,600
2.7100 2.7100 2.6200 2.6800 279,900
2.7900 2.8100 2.6800 2.7000 410,200
2.7900 2.8500 2.7600 2.7700 370,000
2.7200 2.8500 2.7000 2.8200 506,600
Weekend
Weekend
2.6900 2.7300 2.6600 2.7000 483,800
2.6800 2.7600 2.6700 2.7000 460,900
2.6400 2.6800 2.6100 2.6500 351,800
2.7500 2.7800 2.6200 2.6300 503,200
No trading
Weekend
Weekend
2.8300 2.8300 2.8000 2.8100 535,800
2.8300 2.9200 2.8100 2.8100 762,700
2.8800 2.8900 2.7900 2.8100 663,600
2.8200 2.9000 2.8100 2.8900 639,800
2.7600 2.8300 2.7300 2.8100 607,000
Weekend
Weekend
2.7900 2.8200 2.7100 2.7600 607,600
2.8400 2.8700 2.7700 2.7900 588,700
2.8400 2.8600 2.7900 2.8400 568,400
2.8500 2.8700 2.8000 2.8300 694,200
2.9000 2.9400 2.8600 2.8700 397,000
Weekend
Weekend
2.9300 2.9600 2.8900 2.9000 536,000
No trading
2.9500 2.9500 2.8800 2.8800 327,400
2.9200 2.9800 2.9200 2.9500 486,800
2.9400 2.9700 2.9200 2.9400 800,800
Weekend
Weekend
2.9200 2.9700 2.9000 2.9500 603,700
No trading
2.9400 2.9600 2.9100 2.9400 210,900
2.9000 3.0000 2.9000 2.9300 509,300
2.8800 2.9700 2.8800 2.9400 560,100
Weekend
Weekend
2.8900 2.9300 2.8800 2.8900 761,500
2.9100 2.9600 2.8800 2.9100 656,100
2.9000 3.0000 2.8600 2.8600 908,900
2.8800 2.9400 2.8800 2.8900 569,300
3.0000 3.0200 2.8900 2.9000 583,800
Weekend
Weekend
3.0300 3.0300 2.9600 2.9800 699,600
3.0200 3.0500 2.9400 3.0400 906,700
2.9100 3.0300 2.8900 3.0200 896,900
2.8800 2.9400 2.8700 2.9100 1,088,900
2.8800 2.9500 2.8700 2.8700 647,500
Weekend
Weekend
2.7800 2.9000 2.7600 2.8900 729,500
2.8800 2.8900 2.7300 2.7700 949,600
2.8400 2.9000 2.8300 2.8800 407,200
2.8200 2.8500 2.8100 2.8200 409,900
2.8200 2.8700 2.8000 2.8000 474,100
Weekend
Weekend
2.8700 2.9100 2.8600 2.8600 258,600
No trading
2.8100 2.8600 2.7900 2.8400 460,300
2.7700 2.8400 2.7600 2.8200 639,500
2.7500 2.8500 2.7400 2.7600 1,374,600
Weekend
Weekend
2.7500 2.8000 2.7200 2.7500 683,800
2.9100 2.9600 2.7300 2.7600 653,600
2.7900 2.8800 2.7900 2.8500 1,206,200
3.0000 3.0200 2.7800 2.7900 828,300
3.0800 3.1400 3.0000 3.0000 664,600
Weekend
Weekend
2.9900 3.1000 2.9400 3.0800 796,800
3.2000 3.2400 3.0200 3.0400 992,800
3.2000 3.2700 3.2000 3.2400 768,700
3.2300 3.2500 3.1700 3.1800 534,100
3.2200 3.2900 3.2200 3.2700 597,600
Weekend
Weekend
3.1300 3.1800 3.0900 3.1600 651,000
3.2100 3.2300 3.1600 3.1600 486,200
3.1800 3.2400 3.1600 3.2200 594,000
3.3200 3.3500 3.1600 3.1700 659,100
3.3700 3.4000 3.3500 3.3600 678,700
Weekend
Weekend
3.3700 3.4300 3.3500 3.3600 665,400
3.4300 3.5500 3.3500 3.3600 846,900
3.4400 3.5400 3.4400 3.4500 1,456,600
3.4600 3.5000 3.4500 3.4600 760,600
3.5500 3.5500 3.4400 3.4500 1,290,300
Weekend
Weekend
3.4800 3.5900 3.4200 3.5500 1,061,500
3 · 10-Q After market open · 11:02 ET 10-Q ↗
3.4100 3.4900 3.1800 3.4500 2,610,200
2 · 8-K After-hours · 16:10 ET FORM 8-K ↗
4.0400 4.0800 3.9800 4.0000 784,700
3.9300 4.0900 3.9200 4.0400 589,600
3.8500 3.9400 3.8400 3.9300 508,200
Weekend
Weekend
3.8100 3.8600 3.7700 3.8100 634,700
3.9300 3.9700 3.8000 3.8100 727,700
3.8500 3.9500 3.8300 3.9200 847,500
3.6300 3.8200 3.6300 3.8100 529,000
3.7000 3.7600 3.6800 3.7000 472,800
Weekend
Weekend
3.7400 3.7700 3.5900 3.6000 523,200
3.7600 3.7700 3.7100 3.7400 504,200
3.7800 3.8200 3.7500 3.7600 312,600
3.8600 3.8900 3.7300 3.7600 641,000
3.9000 3.9800 3.8300 3.8400 692,700
Weekend
Weekend
3.8100 3.8900 3.7600 3.8600 983,100
3.8000 3.8100 3.7200 3.7700 594,300
3.7500 3.8300 3.7400 3.7800 486,400
3.7600 3.8100 3.7400 3.8000 378,700
3.7600 3.8200 3.7300 3.7600 440,900
Weekend
Weekend
3.8300 3.8300 3.7400 3.7500 354,000
3.8300 3.8900 3.8000 3.8200 532,700
3.9300 3.9400 3.8200 3.8700 456,200
3.9000 3.9900 3.8700 3.9200 548,700
3.8600 3.9200 3.8600 3.8700 309,000
Weekend
Weekend
3.9700 3.9700 3.8600 3.8700 864,700
3.9000 3.9900 3.8800 3.9700 458,300
3.8300 3.9300 3.8000 3.8500 584,000
3.8900 3.8900 3.8000 3.8200 691,600
3.9000 3.9100 3.8300 3.9000 832,300
Weekend
Weekend
3.9100 3.9100 3.7900 3.8200 570,800
4.0000 4.0000 3.9000 3.9400 599,700
4.0500 4.1400 3.8600 3.9500 1,433,700
4.0200 4.0900 4.0000 4.0500 371,200
3.9900 4.1000 3.9900 4.0600 448,800
Weekend
Weekend
4.1600 4.1900 3.9700 3.9900 751,100
4.0500 4.2400 4.0400 4.1600 701,300
4.0100 4.0700 3.9500 4.0100 536,800
4.0100 4.1500 3.9800 4.0200 621,500
No trading
Weekend
Weekend
1 · 8-K After-hours · 16:45 ET FORM 8-K ↗
4.1100 4.1400 3.9900 4.0800 474,400
4.0000 4.1200 3.9800 4.1100 814,500
3.9400 4.0100 3.9300 3.9900 359,100
3.9300 4.0100 3.9200 3.9500 479,700
3.9600 4.0000 3.9200 3.9300 351,700
Weekend
Weekend
3.7700 3.9900 3.7600 3.9700 507,700
3.7200 3.7600 3.6800 3.7400 253,000
3.7200 3.7200 3.6300 3.7100 606,100
3.9000 3.9300 3.7300 3.7400 403,300
3.8600 3.9400 3.8600 3.9000 256,800
Weekend
Weekend
3.9600 3.9600 3.8200 3.8700 492,700
3.9900 4.0700 3.8800 3.9500 474,500
4.0700 4.1100 3.9700 4.0800 531,800
4.0400 4.1100 4.0000 4.0600 685,200
3.8000 4.0400 3.7900 4.0200 948,100
Weekend
Weekend
3.7900 3.8300 3.7400 3.7900 236,500
3.8300 3.8500 3.7300 3.7800 361,000
3.5800 3.8100 3.5700 3.7900 456,600
3.6600 3.7000 3.5700 3.5800 399,700
3.6300 3.6900 3.5800 3.6300 617,800
Weekend
Weekend
3.7000 3.7200 3.6000 3.6000 656,500
3.7500 3.8000 3.7200 3.7600 490,500
3.8700 3.9000 3.7700 3.8000 640,600
3.7600 3.9300 3.7600 3.8700 696,400
3.8400 3.8500 3.7600 3.8300 772,000
Weekend
Weekend

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.

11 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 09:19 ET Summarise
10 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) After market open · 12:49 ET Summarise
8 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
7 DEF 14A DEF 14A (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
6 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
5 10-K 10-K (opens SEC filing in a new tab) After market open · 12:38 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) After market open · 11:02 ET Summarise
2 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:45 ET Summarise