Ironwood Pharmaceuticals, Inc. - Class A IRWD

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Ironwood Pharmaceuticals, Inc. - Class A Common Stock · Company · Nasdaq · Healthcare / Drug Manufacturers - Specialty & Generic

Paper trade (simulated — no real money)

Fill: USD 3.4600 · FX 1 USD = 1.277900 SGD · about SGD 4.4215 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 1.66 → 3.46 · 108.4%
5.3903.4451.500 1,2 3 4 5 6 7 8 9,10 11,12 13 14 15 16 17,18 19 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
3.5200 3.5360 3.3800 3.4600 1,259,535
3.5000 3.6100 3.4900 3.5700 1,041,100
3.6800 3.6900 3.5200 3.5500 1,518,700
3.5700 3.7100 3.5300 3.6300 1,640,300
3.5300 3.5900 3.4800 3.5600 1,679,000
Weekend
Weekend
19 · 8-K After market open · 11:30 ET FORM 8-K ↗
3.7300 3.7300 3.4800 3.5000 2,530,700
3.6300 3.8700 3.6300 3.7700 2,044,800
3.5500 3.6300 3.5100 3.6000 1,223,300
3.7400 3.7800 3.5500 3.5900 2,105,700
3.8200 3.8500 3.7400 3.7600 1,035,800
Weekend
Weekend
3.8800 3.9500 3.8100 3.8200 1,721,500
3.7000 3.9700 3.6700 3.8700 2,403,700
3.5800 3.8700 3.5400 3.7500 2,050,000
3.6400 3.6800 3.6000 3.6300 1,866,700
3.5900 3.6700 3.5500 3.6500 2,225,800
Weekend
Weekend
3.7400 3.8000 3.5800 3.6400 2,698,700
3.9500 3.9700 3.7400 3.7600 2,633,700
4.1600 4.1700 3.9600 3.9700 1,661,200
4.1200 4.1700 4.0800 4.1600 1,233,100
4.0900 4.1700 4.0400 4.1200 1,962,600
Weekend
Weekend
4.2200 4.2500 4.1000 4.1300 1,319,700
4.2300 4.2600 4.0500 4.1900 1,744,000
4.5000 4.5400 4.2500 4.2700 1,657,600
4.4600 4.5900 4.4000 4.5300 3,427,100
4.3900 4.6000 4.3000 4.4100 2,414,900
Weekend
Weekend
4.2000 4.3900 4.1700 4.3600 7,690,200
4.2700 4.4800 4.2000 4.2300 3,486,900
4.0700 4.2400 4.0600 4.1700 1,312,200
4.1800 4.1800 4.0500 4.0600 1,124,600
4.1000 4.1900 4.0800 4.1700 1,252,500
Weekend
Weekend
4.0300 4.1100 3.9400 4.0800 1,249,600
4.0300 4.0500 3.9400 3.9700 1,174,200
4.1400 4.1600 4.0400 4.0700 1,477,200
4.2500 4.2700 4.0800 4.1700 2,275,600
No trading
Weekend
Weekend
4.2600 4.3300 4.2200 4.2600 829,300
4.4500 4.4800 4.2800 4.2900 1,132,500
4.3100 4.4800 4.2600 4.4100 2,430,500
4.1900 4.3200 4.1800 4.2700 1,449,800
4.1300 4.2600 4.0200 4.2500 1,668,300
Weekend
Weekend
4.2000 4.2100 4.0800 4.1300 1,518,200
4.2400 4.3000 4.1500 4.2400 961,200
4.3800 4.3800 4.2400 4.2900 1,029,300
4.1600 4.4300 4.1300 4.3900 1,848,200
4.2600 4.2800 4.1200 4.1300 1,384,200
Weekend
Weekend
4.2200 4.3000 4.1900 4.2900 2,272,200
4.2600 4.2900 4.0500 4.1400 1,471,000
4.4800 4.4900 4.3100 4.3600 1,478,100
4.3500 4.4000 4.2600 4.3100 1,411,500
4.3100 4.4100 4.2300 4.3600 1,377,000
Weekend
Weekend
4.0300 4.3500 3.9600 4.3100 2,334,000
4.4100 4.4100 4.0500 4.0800 2,084,200
4.3200 4.5100 4.2600 4.3200 2,720,900
4.0800 4.3200 4.0600 4.3000 1,929,800
4.1700 4.2800 4.0400 4.0500 2,184,400
Weekend
Weekend
4.3000 4.4000 4.2100 4.3200 1,843,100
18 · 10-Q After-hours · 16:07 ET 10-Q ↗
4.1600 4.3800 3.9200 4.2600 3,362,000
17 · 8-K Pre-market · 07:12 ET FORM 8-K ↗
4.3400 4.4300 4.1300 4.1500 2,209,900
4.5300 4.5700 4.2800 4.3100 5,768,300
4.3300 4.5900 4.2800 4.4200 3,818,200
Weekend
Weekend
3.9300 4.2800 3.8700 4.2300 3,583,400
3.6000 3.7600 3.5500 3.7300 1,298,600
3.8000 3.9600 3.5500 3.5600 1,252,800
3.9000 3.9700 3.7600 3.8000 1,821,200
3.7100 3.9900 3.6900 3.9100 1,930,700
Weekend
Weekend
3.7900 3.8400 3.7000 3.7100 1,108,900
3.7700 3.8400 3.7600 3.7900 1,074,900
3.8900 3.9300 3.8500 3.8800 1,052,700
3.8700 3.9200 3.8100 3.9100 1,164,200
3.9200 4.0200 3.8400 3.8500 1,801,200
Weekend
Weekend
3.8300 4.0100 3.8000 3.8600 1,804,000
3.9300 3.9400 3.8100 3.8700 2,014,300
4.0400 4.1400 3.9900 4.0000 1,366,500
4.1800 4.2300 3.9400 3.9800 2,118,800
4.3800 4.3900 4.1400 4.2100 2,268,700
Weekend
Weekend
4.6200 4.6500 4.3700 4.4700 2,775,800
4.6900 4.7800 4.5500 4.6700 3,141,600
4.6800 4.8800 4.5900 4.7700 4,987,300
4.4800 4.6700 4.4100 4.4700 3,479,100
4.3300 4.4700 4.2700 4.3800 3,001,600
Weekend
Weekend
No trading
4.1700 4.3900 4.1600 4.3300 2,650,100
4.1400 4.2900 4.0600 4.1200 1,652,800
4.2500 4.3200 4.1200 4.2100 2,586,100
4.0800 4.3600 3.9900 4.3000 3,501,900
Weekend
Weekend
3.7900 4.1700 3.7900 4.1300 7,108,500
3.9500 3.9800 3.8000 3.8400 1,659,100
3.8000 4.0100 3.8000 3.9100 1,764,500
3.7700 3.9200 3.7600 3.8600 1,445,000
3.6000 3.9100 3.5700 3.8200 2,523,900
Weekend
Weekend
No trading
16 · 8-K After-hours · 16:14 ET FORM 8-K ↗
3.5900 3.6500 3.4900 3.5400 4,942,500
3.6600 3.7200 3.5100 3.5200 1,629,200
3.7500 3.7900 3.6600 3.6600 1,825,400
15 · 8-K After-hours · 16:05 ET FORM 8-K ↗
3.7700 3.7700 3.6400 3.6900 2,004,900
Weekend
Weekend
3.6500 3.7000 3.5800 3.6500 1,868,700
3.3700 3.7800 3.3300 3.6300 2,781,400
3.2000 3.4100 3.2000 3.3500 1,873,900
3.2700 3.3900 3.1500 3.2200 2,029,500
3.4900 3.4900 3.2500 3.2900 1,502,100
Weekend
Weekend
3.3700 3.4700 3.3100 3.3100 1,334,400
3.2500 3.4600 3.2500 3.4000 1,876,500
3.3000 3.3000 3.1900 3.2400 2,685,900
3.4500 3.4500 3.2500 3.2800 1,900,500
3.5200 3.5700 3.4500 3.4600 1,699,500
Weekend
Weekend
3.6300 3.6700 3.5000 3.5700 2,034,700
3.6400 3.7200 3.5500 3.6000 1,882,100
3.8800 4.0300 3.6900 3.7100 2,944,000
3.9200 4.0000 3.8300 3.9000 2,783,900
No trading
Weekend
Weekend
3.8600 3.9300 3.8000 3.9200 1,936,100
14 · 8-K/A After-hours · 16:05 ET FORM 8-K/A ↗
3.8100 3.8700 3.7100 3.8500 2,077,100
3.7200 3.9400 3.6700 3.9200 3,232,500
3.5300 3.7200 3.4200 3.6700 3,435,200
3.5500 3.6100 3.4200 3.5000 2,443,700
Weekend
Weekend
3.5800 3.5900 3.4700 3.5800 2,175,000
3.6500 3.7700 3.5400 3.6700 2,425,100
4.0500 4.0500 3.5700 3.6800 4,412,300
13 · 8-K Pre-market · 08:00 ET FORM 8-K ↗
4.0800 4.1200 3.9300 4.0900 1,863,800
4.2500 4.3600 4.0800 4.1700 2,267,600
Weekend
Weekend
4.2600 4.3800 4.0100 4.2200 2,552,800
12 · 10-Q After-hours · 16:08 ET 10-Q ↗
4.6800 4.8000 3.9500 4.1700 4,964,800
11 · 8-K Pre-market · 07:10 ET FORM 8-K ↗
4.7800 4.8800 4.6100 4.8300 3,764,600
4.6400 4.7300 4.5600 4.6700 4,452,800
4.3500 4.6400 4.3000 4.5900 2,739,700
Weekend
Weekend
4.1400 4.4800 4.0800 4.4400 1,738,100
4.1800 4.3000 4.1000 4.1300 1,135,200
4.2100 4.4900 4.1100 4.1500 2,089,200
10 · DEFA14A After-hours · 16:09 ET DEFA14A ↗ 9 · DEF 14A After-hours · 16:06 ET DEF 14A ↗
4.0100 4.3500 3.9700 4.2000 1,894,200
3.9200 4.0700 3.9200 4.0400 1,918,600
Weekend
Weekend
3.7900 3.9300 3.7200 3.9300 1,323,800
4.1600 4.1800 3.7700 3.7900 1,833,700
4.1000 4.2300 4.0900 4.1800 1,199,900
4.4100 4.4200 4.0600 4.0700 1,912,900
4.3800 4.4500 4.3600 4.4200 1,090,700
Weekend
Weekend
4.4500 4.5000 4.3700 4.4300 1,957,600
4.4300 4.4500 4.2400 4.3300 1,853,600
4.2000 4.4800 4.1300 4.3700 2,725,300
3.9600 4.3100 3.9500 4.0400 3,613,700
3.5800 3.6800 3.5300 3.6500 906,000
Weekend
Weekend
3.6000 3.6500 3.5100 3.6300 1,223,000
3.5000 3.6200 3.4100 3.6000 1,050,900
3.5400 3.6000 3.4600 3.5100 1,540,100
3.4900 3.5000 3.3400 3.4600 1,090,500
3.5100 3.6500 3.4900 3.5300 1,278,600
Weekend
Weekend
No trading
3.7600 3.7700 3.5200 3.5400 1,888,800
3.5900 3.9300 3.5600 3.9000 2,677,000
3.2700 3.6000 3.2700 3.5100 3,159,200
3.0600 3.3400 3.0500 3.2300 1,916,200
Weekend
Weekend
3.1000 3.2000 3.0300 3.0600 1,350,600
3.1300 3.2600 3.1300 3.1500 1,146,000
3.0900 3.2600 3.0900 3.1900 1,118,700
3.2600 3.2600 3.0400 3.0400 1,689,500
3.1800 3.4000 3.1800 3.2900 2,856,600
Weekend
Weekend
3.2000 3.2500 3.0200 3.0400 14,227,600
3.1400 3.2600 3.0600 3.2300 3,414,700
3.2200 3.3100 3.1300 3.1700 3,238,100
3.3700 3.5200 3.0500 3.2500 10,411,600
3.4400 3.5000 3.3300 3.3700 1,684,000
Weekend
Weekend
3.4000 3.5100 3.3400 3.3700 1,469,000
3.5700 3.6500 3.3600 3.3800 1,827,500
3.6900 3.8300 3.6500 3.6800 1,544,300
8 · 8-K Pre-market · 07:05 ET FORM 8-K ↗
3.7000 3.9300 3.6400 3.7000 2,430,300
3.3900 3.6800 3.3100 3.6500 2,551,500
Weekend
Weekend
3.5200 3.6400 3.4300 3.5000 1,441,800
3.6800 3.8200 3.5600 3.6200 2,124,700
3.6700 3.8000 3.5600 3.7400 1,927,900
3.4500 3.6500 3.3800 3.6400 2,555,000
3.3200 3.6700 3.2400 3.5700 2,919,200
Weekend
Weekend
3.5500 3.5600 3.2200 3.4200 4,630,500
7 · 10-K After-hours · 16:09 ET 10-K ↗
3.4900 3.7400 3.4600 3.6600 6,766,300
3.6000 3.6300 2.9500 3.3600 11,572,800
6 · 8-K Pre-market · 07:11 ET FORM 8-K ↗
3.6900 3.7900 3.6000 3.7900 3,668,000
3.9300 4.0500 3.6900 3.7500 3,391,200
Weekend
Weekend
4.5500 4.5600 3.8100 3.9600 5,826,700
4.7500 4.7500 4.5300 4.6100 1,907,300
4.7000 4.8300 4.6000 4.7800 1,673,200
4.4800 4.8800 4.4700 4.7800 2,085,300
No trading
Weekend
Weekend
4.5200 4.6900 4.3500 4.5000 1,972,800
4.4400 4.6300 4.2200 4.6100 2,135,000
4.6400 4.6500 4.2800 4.4400 2,602,600
4.8400 4.8500 4.5500 4.5900 3,128,400
4.6200 4.9100 4.5900 4.8400 3,443,300
Weekend
Weekend
4.5200 4.7100 4.4100 4.5600 2,978,800
4.5200 4.6900 4.4200 4.4500 1,623,800
4.8000 4.8500 4.4400 4.4900 2,569,000
5.0000 5.1000 4.7600 4.7900 2,353,000
4.8700 5.1300 4.7800 4.9400 2,123,200
Weekend
Weekend
4.8100 5.0000 4.7100 4.8900 2,279,200
4.7800 5.0000 4.7200 4.8600 1,596,100
5.1300 5.1800 4.7700 4.7900 2,136,400
5.2100 5.3000 4.9900 5.1400 1,790,300
5.3000 5.3100 5.0500 5.1800 2,020,900
Weekend
Weekend
5.3600 5.4200 5.1600 5.2300 2,899,500
5.3100 5.5700 5.1500 5.3900 3,905,500
4.5800 5.3300 4.5800 5.3100 4,877,400
4.3500 4.6200 4.1700 4.5800 2,967,300
No trading
Weekend
Weekend
4.5200 4.8000 4.4700 4.5000 2,643,000
4.5000 4.5700 4.2200 4.5200 4,108,400
4.6300 4.7100 4.5000 4.5400 1,739,400
4.4700 4.7100 4.3500 4.6400 3,790,900
4.1100 4.5100 4.0400 4.4700 4,832,400
Weekend
Weekend
4.0000 4.1500 3.8700 4.0600 3,144,900
4.0400 4.1300 3.9400 3.9800 2,353,900
4.2900 4.2900 4.0500 4.0800 2,565,100
4.5500 4.6600 4.0600 4.3000 5,372,400
4.5200 5.0200 4.5000 4.5900 13,464,900
Weekend
Weekend
4.6000 5.7800 4.2000 4.2700 85,044,300
5 · 8-K Pre-market · 07:05 ET FORM 8-K ↗
No trading
3.3300 3.3800 3.2900 3.3700 2,067,500
3.2200 3.3900 3.1900 3.3300 1,219,500
3.1500 3.2700 3.1100 3.2100 2,086,500
Weekend
Weekend
3.2400 3.2400 3.1400 3.2000 765,900
No trading
3.2000 3.2800 3.1200 3.2600 584,000
3.2500 3.2500 3.1000 3.2100 976,500
4 · 8-K Pre-market · 07:06 ET FORM 8-K ↗
3.1100 3.3500 3.0800 3.2300 3,629,400
Weekend
Weekend
3.2600 3.3400 3.1200 3.1300 5,338,000
3.3900 3.4400 3.2100 3.2600 3,254,700
3.5400 3.6100 3.3200 3.3700 4,204,900
3.5500 3.6200 3.4200 3.5400 3,954,800
3.6000 3.8400 3.5600 3.5900 2,489,400
Weekend
Weekend
3.6800 3.6800 3.5300 3.5800 1,529,000
3.7000 3.8500 3.5000 3.6800 1,584,000
3.6100 3.8500 3.5800 3.6900 2,518,000
3.4700 3.6300 3.4200 3.6100 1,911,400
3.5600 3.5700 3.2200 3.4700 2,500,600
Weekend
Weekend
3.7300 3.8000 3.3600 3.4800 2,062,000
3.7200 3.7600 3.5200 3.7300 1,782,400
3.5200 3.7700 3.4000 3.7300 1,516,300
3.5200 3.5500 3.3600 3.5000 1,391,900
3.4800 3.7000 3.4500 3.5000 2,213,200
Weekend
Weekend
3.9200 3.9300 3.4000 3.5000 1,861,700
No trading
3.3300 3.9300 3.2500 3.8600 5,819,000
3 · 8-K Pre-market · 07:00 ET FORM 8-K ↗
3.3300 3.3400 3.0700 3.1300 1,414,200
3.1800 3.4000 3.1700 3.3200 1,728,900
Weekend
Weekend
3.2000 3.2900 3.0600 3.1600 1,917,600
3.2900 3.4400 3.0500 3.1700 3,018,900
3.1100 3.3000 3.0000 3.1800 2,253,000
3.0900 3.2000 2.9600 3.1100 2,652,500
3.1200 3.4700 3.0100 3.1300 3,985,600
Weekend
Weekend
3.4100 3.4200 3.1200 3.1400 2,717,900
3.0500 3.5300 3.0200 3.3700 4,597,800
2.9800 3.2300 2.8500 3.1100 4,770,100
2.5000 2.9800 2.4000 2.8900 5,144,500
2.4400 2.9700 2.3100 2.5300 20,171,800
2 · 8-K Pre-market · 07:12 ET FORM 8-K ↗ 1 · 10-Q Pre-market · 07:01 ET 10-Q ↗
Weekend
Weekend
2.0600 2.0600 1.8800 1.9200 2,026,300
2.0500 2.0800 1.9500 2.0500 1,218,600
1.8800 2.2300 1.8800 2.0600 4,055,400
1.8100 1.8900 1.7600 1.8700 1,144,700
1.9600 2.1000 1.8000 1.8600 2,937,900
Weekend
Weekend
1.6500 1.9400 1.6100 1.9200 4,360,900
1.5000 1.5800 1.4700 1.5000 1,132,600
1.5200 1.6500 1.5000 1.5100 942,800
1.6200 1.6400 1.5200 1.5400 1,085,800
1.6800 1.7700 1.6300 1.6300 881,700
Weekend
Weekend
1.6500 1.6700 1.6000 1.6600 526,700

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.

19 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 11:30 ET Summarise
18 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
17 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:12 ET Summarise
16 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
15 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
14 8-K/A FORM 8-K/A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
13 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
11 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:10 ET Summarise
10 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
9 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
8 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
7 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
6 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:11 ET Summarise
5 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:06 ET Summarise
3 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:00 ET Summarise
2 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:12 ET Summarise
1 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 07:01 ET Summarise