Cyclerion Therapeutics, Inc CYCN

Open calendar →

Cyclerion Therapeutics, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 3.5000 · FX 1 USD = 1.289800 SGD · about SGD 4.5143 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 2.78 → 3.50 · 25.9%
6.3803.7301.080 1 2 3,4 5 6 7 8 9 10 11 12 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
12 · 424B3 After-hours · 16:22 ET 424B3 ↗
3.5800 3.6200 3.4020 3.5000 73,400
3.6500 3.6520 3.6000 3.6200 5,800
3.7300 3.8000 3.6000 3.6300 11,400
3.6900 3.7200 3.6000 3.6950 7,500
3.6100 3.7600 3.5600 3.6500 20,200
Weekend
Weekend
3.6000 3.6700 3.5730 3.6400 18,100
3.6700 3.8400 3.5600 3.6600 11,400
3.7800 3.9000 3.6700 3.7100 23,100
3.8800 3.9400 3.5500 3.8300 30,500
3.7400 3.8750 3.6800 3.8200 11,700
Weekend
Weekend
3.8500 3.8500 3.5100 3.8350 27,600
3.5100 3.9700 3.4500 3.9300 104,500
3.3250 3.4900 3.3250 3.4750 6,500
3.4100 3.4800 3.3600 3.4800 11,200
3.3600 3.4900 3.3600 3.4600 5,000
Weekend
Weekend
No trading
3.4400 3.5700 3.3500 3.4300 13,100
3.4400 3.5910 3.3500 3.3700 27,500
3.2800 3.4800 3.2800 3.3900 15,700
3.3400 3.4130 3.3400 3.3550 8,100
Weekend
Weekend
3.1400 3.3800 3.1400 3.3800 27,900
3.1200 3.2640 3.1200 3.1700 13,900
3.2500 3.3150 3.1400 3.1400 41,600
3.1300 3.3500 3.1300 3.2700 14,000
3.1400 3.2800 3.0250 3.2200 20,200
Weekend
Weekend
No trading
3.2200 3.3000 3.2000 3.2000 43,900
3.1300 3.3500 3.1300 3.1800 20,500
3.1500 3.2400 3.1100 3.1800 62,500
3.3100 3.4000 3.1800 3.1800 37,000
Weekend
Weekend
3.1100 3.2700 3.1100 3.2500 39,100
3.0900 3.2100 3.0000 3.2100 21,800
2.9600 3.1600 2.9600 3.0900 21,000
3.0000 3.0950 2.9800 3.0000 23,900
3.0800 3.0800 2.9700 3.0100 27,900
Weekend
Weekend
2.9800 3.0900 2.9600 2.9800 24,400
2.9600 3.1150 2.9600 3.0600 42,400
3.0000 3.0400 2.9800 3.0000 31,600
3.0450 3.0600 2.9600 3.0200 31,100
3.0800 3.1500 2.9600 3.0800 27,100
Weekend
Weekend
3.2440 3.2800 3.1500 3.1500 35,100
3.1500 3.2800 3.1300 3.1800 22,800
3.1000 3.2400 3.0600 3.1500 23,400
3.0800 3.2000 3.0100 3.2000 29,200
No trading
Weekend
Weekend
3.0900 3.3500 3.0900 3.1800 36,400
3.0800 3.2100 3.0300 3.1600 15,500
2.9800 3.1400 2.9800 3.0800 59,600
3.0000 3.0500 2.9300 3.0000 38,700
3.0500 3.1500 2.9650 3.0200 54,000
Weekend
Weekend
3.0600 3.1700 3.0600 3.1200 51,400
3.0900 3.2000 3.0650 3.0900 112,800
3.0800 3.2200 3.0800 3.1300 143,900
11 · 10-Q After-hours · 16:15 ET 10-Q ↗
3.0900 3.2200 3.0500 3.1800 55,500
3.0600 3.2000 3.0350 3.1900 48,400
Weekend
Weekend
3.1500 3.1550 3.0650 3.1000 55,300
3.1900 3.2000 3.0900 3.1500 86,900
3.2500 3.2500 3.1250 3.2400 69,000
3.2100 3.2800 3.1500 3.1500 112,600
3.0200 3.2950 3.0200 3.2600 79,600
Weekend
Weekend
3.2200 3.3100 3.2000 3.2600 64,400
3.2900 3.3700 3.1900 3.3100 83,100
10 · 10-K/A Pre-market · 08:30 ET 10-K/A ↗
2.9600 3.5000 2.9600 3.3200 269,600
2.8900 3.0900 2.8320 3.0400 92,600
2.9000 2.9560 2.9000 2.9300 92,300
Weekend
Weekend
2.9100 3.0100 2.8720 2.9400 151,100
3.0500 3.1100 2.9000 2.9500 152,500
3.0300 3.0800 2.9800 3.0600 112,600
2.9400 3.1400 2.9400 3.0000 148,200
2.9100 3.1100 2.9100 3.0000 122,800
Weekend
Weekend
2.9400 3.0300 2.8300 3.0200 273,200
2.9500 3.0400 2.8600 2.9800 193,000
3.1600 3.3800 2.9800 3.0300 186,500
2.8400 3.2800 2.8000 3.2200 328,800
2.9100 3.0500 2.8300 2.8900 307,700
Weekend
Weekend
3.0800 3.2700 2.8000 2.9100 332,000
2.8900 3.7500 2.8510 3.1600 2,132,600
3.4900 3.6900 2.7900 2.8900 1,162,700
4.0300 4.1390 3.3500 3.4800 1,157,500
5.1150 5.4500 4.0350 4.1500 3,067,200
Weekend
Weekend
No trading
4.9400 6.7500 4.6500 6.1500 11,363,100
9 · 8-K After-hours · 16:12 ET 8-K ↗
5.4200 8.4800 5.3700 6.3800 264,674,300
1.4650 1.5500 1.4600 1.5500 27,600
8 · 10-K After-hours · 17:58 ET 10-K ↗
1.4500 1.4600 1.4000 1.4450 34,500
Weekend
Weekend
1.5250 1.5250 1.4500 1.5050 31,100
1.5800 1.5900 1.5500 1.5500 12,400
1.6500 1.6500 1.5800 1.6200 12,000
1.5400 1.6750 1.5010 1.6400 63,600
1.5600 1.6000 1.4900 1.5900 31,000
Weekend
Weekend
1.5300 1.5900 1.4400 1.5900 61,600
1.4200 1.5400 1.4200 1.5100 13,400
1.4500 1.4820 1.4000 1.4600 36,700
1.4800 1.5610 1.4400 1.4800 34,900
1.4300 1.5400 1.3100 1.4850 44,200
Weekend
Weekend
1.4000 1.4800 1.3900 1.4500 18,800
1.4000 1.4580 1.3930 1.4200 14,400
1.4300 1.4700 1.4000 1.4300 38,500
1.4600 1.6160 1.4400 1.4700 80,200
1.3800 1.4900 1.3310 1.4900 54,500
Weekend
Weekend
1.3200 1.4400 1.3100 1.4100 26,200
1.3200 1.5000 1.3100 1.3900 64,800
1.3390 1.4100 1.3390 1.3900 20,800
1.3100 1.4200 1.2800 1.3500 49,200
1.3100 1.4000 1.2900 1.3000 81,600
Weekend
Weekend
1.2880 1.3900 1.2750 1.3500 72,000
1.1800 1.3100 1.1800 1.3100 28,400
1.3000 1.3400 1.2600 1.3000 24,600
1.2600 1.3500 1.2600 1.3200 25,500
1.3100 1.3400 1.2700 1.3200 23,000
Weekend
Weekend
1.2900 1.3500 1.2900 1.3400 8,500
1.3400 1.3700 1.2890 1.3600 19,400
1.2300 1.3800 1.2300 1.3500 77,800
1.2300 1.2800 1.1620 1.2400 43,400
7 · 8-K Pre-market · 07:21 ET 8-K ↗
No trading
Weekend
Weekend
1.1900 1.3300 1.1660 1.2500 58,700
1.2200 1.2700 1.1800 1.2100 42,000
1.1400 1.2800 1.1210 1.2200 52,800
1.1850 1.2150 1.1600 1.1700 20,000
1.1100 1.1900 1.0270 1.1700 82,800
Weekend
Weekend
1.1050 1.1200 1.0600 1.1000 76,300
1.2000 1.2300 1.0700 1.0800 134,800
1.2500 1.2800 1.2400 1.2400 57,200
1.3700 1.5200 1.2400 1.2400 189,800
1.3400 1.4840 1.3400 1.3800 106,400
Weekend
Weekend
1.3600 1.3900 1.3400 1.3600 31,800
1.4000 1.4350 1.3600 1.3700 75,200
1.5100 1.5110 1.4210 1.4500 53,600
1.4600 1.5000 1.4400 1.5000 49,900
1.5300 1.5310 1.4550 1.4800 97,800
Weekend
Weekend
1.3900 1.6900 1.3730 1.5400 1,006,600
1.3700 1.4000 1.3600 1.3800 55,900
1.3300 1.4000 1.3300 1.3500 59,900
1.3500 1.4000 1.3390 1.3500 36,000
No trading
Weekend
Weekend
1.3600 1.4300 1.3400 1.3600 83,200
1.4900 1.5100 1.3600 1.3600 165,700
1.5300 1.6000 1.4800 1.5200 122,000
1.7000 1.7200 1.5300 1.5300 204,900
1.6800 1.8500 1.6600 1.7100 199,900
Weekend
Weekend
1.9100 2.0000 1.6500 1.6500 531,800
1.6500 1.9900 1.6400 1.9300 887,400
1.9350 1.9500 1.5800 1.8000 2,313,100
2.1700 2.2800 1.8600 1.9500 72,124,900
6 · 8-K Pre-market · 08:33 ET 8-K ↗
1.3400 1.4300 1.2800 1.3800 12,017,200
Weekend
Weekend
1.2500 1.3450 1.2500 1.3400 10,900
No trading
1.2300 1.2700 1.2000 1.2700 30,500
1.1900 1.2200 1.1600 1.1800 22,000
1.2900 1.3190 1.2000 1.2000 34,000
Weekend
Weekend
1.3300 1.3700 1.2960 1.3500 32,900
No trading
1.4000 1.4130 1.3350 1.3800 10,000
1.4700 1.4900 1.4000 1.4300 21,000
1.4500 1.5100 1.4000 1.4700 55,900
Weekend
Weekend
1.4200 1.4700 1.4100 1.4500 27,500
1.5200 1.5200 1.4300 1.4700 19,900
1.5100 1.6400 1.4900 1.5200 16,700
1.6000 1.6000 1.5200 1.5300 39,400
1.5100 1.6300 1.4700 1.6000 46,900
Weekend
Weekend
1.6400 1.6400 1.4300 1.5100 64,300
1.6790 1.7300 1.6170 1.6800 38,400
1.6700 1.7700 1.6500 1.7200 33,200
1.7200 1.7200 1.6600 1.6600 11,200
1.6300 1.8200 1.6300 1.6900 128,000
Weekend
Weekend
1.7000 1.7270 1.6600 1.6800 31,800
1.4900 1.7300 1.4900 1.7000 147,100
1.5000 1.5500 1.4800 1.5300 56,300
1.5700 1.5700 1.5100 1.5300 34,300
5 · 8-K After-hours · 17:13 ET 8-K ↗
1.5430 1.5900 1.5300 1.5600 22,800
Weekend
Weekend
1.5530 1.6000 1.5500 1.5800 25,900
No trading
1.4800 1.5500 1.4800 1.5200 42,100
1.4900 1.5600 1.4400 1.4700 52,800
1.4600 1.5000 1.4500 1.4900 43,200
Weekend
Weekend
1.4100 1.4900 1.4100 1.4800 45,100
1.4400 1.5000 1.4100 1.4200 90,800
1.4400 1.4590 1.3900 1.4100 33,000
1.3500 1.4700 1.3500 1.4200 45,600
1.4000 1.4300 1.3300 1.3900 83,900
Weekend
Weekend
1.3500 1.4550 1.3310 1.3600 75,800
1.3300 1.5200 1.2800 1.4400 276,600
4 · 10-Q After-hours · 16:30 ET 10-Q ↗ 3 · 10-K/A After-hours · 16:15 ET 10-K/A ↗
1.4600 1.5500 1.4000 1.4200 296,300
1.8200 1.8400 1.5100 1.6100 2,996,700
1.6300 1.8200 1.6200 1.8000 16,892,300
Weekend
Weekend
1.6300 1.6690 1.6000 1.6220 18,700
1.6700 1.7400 1.6700 1.6900 9,100
1.7500 1.8300 1.7200 1.7500 10,300
1.8000 1.8380 1.6900 1.6900 19,500
1.8800 1.8800 1.7200 1.8600 46,200
Weekend
Weekend
1.9100 1.9240 1.8400 1.8700 30,600
1.9500 1.9800 1.8900 1.9200 46,400
2.0300 2.0450 1.9200 1.9700 19,400
2.0700 2.1200 2.0400 2.0400 23,300
2.1100 2.2060 2.0600 2.1000 17,700
Weekend
Weekend
2.1100 2.1900 2.1000 2.1200 22,000
2.0400 2.1550 2.0300 2.1300 34,400
2.1500 2.1600 2.0600 2.0800 61,000
2.2400 2.2400 2.1500 2.1600 23,800
2.2200 2.2700 2.1800 2.2000 48,900
Weekend
Weekend
2.3000 2.3090 2.2100 2.2400 26,700
2.3700 2.4600 2.2100 2.2500 116,300
2.3500 2.4450 2.3500 2.3700 29,100
2.3200 2.4500 2.2300 2.3700 102,900
2.3200 2.4000 2.2800 2.3000 28,900
Weekend
Weekend
2.4700 2.5000 2.2600 2.3300 81,900
2.5100 2.5400 2.4000 2.4700 42,000
2.5200 2.5600 2.4100 2.5200 80,100
2.3800 2.5900 2.3800 2.5500 136,700
2.1700 2.4900 2.1700 2.3900 184,500
Weekend
Weekend
2.4900 2.5900 2.4000 2.5000 59,000
2.4000 2.5500 2.3100 2.4800 82,800
2.2000 2.4290 2.2000 2.3700 124,200
2.2600 2.3390 2.2400 2.3000 95,700
2.2600 2.4990 2.1600 2.3400 152,000
Weekend
Weekend
2.7500 2.7500 2.3300 2.4200 190,700
2.8000 2.8300 2.5000 2.7300 501,800
3.5500 3.7600 3.0200 3.2500 14,450,200
2 · 8-K After-hours · 16:14 ET 8-K ↗
2.8300 3.1680 2.7000 3.0200 5,255,200
2.3800 3.0700 2.3000 3.0400 108,200
Weekend
Weekend
2.3600 2.5020 2.3400 2.3800 16,100
2.3700 2.4040 2.3300 2.3400 9,300
2.5200 2.5200 2.3000 2.3300 16,100
2.5260 2.5900 2.3600 2.4460 17,700
2.4600 2.5790 2.3600 2.3600 18,300
Weekend
Weekend
2.5500 2.5500 2.4000 2.4600 24,300
2.4800 2.5500 2.4100 2.5500 25,700
2.5900 2.6060 2.3630 2.3630 64,000
2.3000 2.6200 2.3000 2.6000 34,500
2.3100 2.3100 2.1300 2.2600 26,000
Weekend
Weekend
2.4000 2.4300 2.1600 2.2150 29,400
2.3700 2.4300 2.3400 2.3900 14,700
2.5000 2.5850 2.3600 2.4250 16,800
2.4500 2.5730 2.4100 2.5100 8,100
No trading
Weekend
Weekend
2.6000 2.7200 2.4510 2.4700 8,100
2.6300 2.7400 2.5000 2.5710 65,300
2.8500 2.8800 2.4500 2.5700 36,600
2.6070 2.9000 2.6070 2.7600 51,900
2.4500 2.5880 2.3400 2.5450 12,800
Weekend
Weekend
2.3400 2.5500 2.3300 2.4900 9,300
2.3400 2.5200 2.3300 2.3800 18,500
2.3800 2.4000 2.3000 2.3800 9,900
2.5000 2.5900 2.3150 2.3400 17,000
2.4400 2.5500 2.3600 2.5400 14,900
Weekend
Weekend
2.3400 2.4400 2.3000 2.3550 29,800
2.4200 2.5600 2.2800 2.3300 21,100
2.4000 2.5600 2.3700 2.4700 25,100
2.1700 2.4300 2.1600 2.4000 49,300
2.3100 2.3700 2.1000 2.1700 13,300
Weekend
Weekend
2.3300 2.4050 2.2900 2.2910 11,500
2.3200 2.3900 2.3200 2.3550 24,400
2.7000 2.7000 2.3600 2.3900 60,400
1 · 10-Q After-hours · 16:30 ET 10-Q ↗
2.5100 2.8900 2.5100 2.8900 70,800
2.5510 2.8900 2.5500 2.7860 36,200
Weekend
Weekend
2.6500 2.7500 2.5500 2.5940 21,500
2.5700 2.7500 2.5100 2.6500 80,000
2.6500 2.7800 2.5700 2.6400 39,900
2.7300 2.9500 2.6000 2.7300 43,900
2.8800 2.9300 2.7500 2.7800 41,000
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.

12 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
10 10-K/A 10-K/A (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
8 10-K 10-K (opens SEC filing in a new tab) After-hours · 17:58 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:21 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:33 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:13 ET Summarise
4 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
3 10-K/A 10-K/A (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
1 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise