Syndax Pharmaceuticals, Inc SNDX

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Syndax Pharmaceuticals, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 20.8100 · FX 1 USD = 1.290100 SGD · about SGD 26.8470 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 9.57 → 20.81 · 117.5%
25.15017.3609.570 1,2 3 4,5 6 7 8,9 10,11,12,13 14,15 16,17 18 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
21.3800 21.4400 20.5700 20.8100 1,227,500
21.8000 21.8800 21.1700 21.2100 1,306,500
22.4400 22.7450 21.8310 22.0500 1,059,700
22.3700 22.7200 22.1000 22.6400 1,185,400
22.9500 23.2750 22.2800 22.2900 1,309,200
Weekend
Weekend
22.3400 23.4500 22.2430 22.8000 1,061,500
23.5200 24.4100 22.6700 22.7100 1,597,200
23.9600 24.1950 23.2600 23.5200 2,282,800
22.5650 24.2000 22.5650 24.1300 2,081,600
18 · 8-K Pre-market · 08:30 ET 8-K ↗
23.2100 23.3250 22.2600 22.8900 1,423,000
Weekend
Weekend
24.7900 24.7900 23.0100 23.6100 2,100,800
24.7800 25.1700 24.3250 24.8400 1,441,200
22.9800 25.2400 22.9500 24.5600 4,017,700
22.3800 23.4700 22.0350 23.2400 2,294,500
21.7800 22.2000 21.2400 22.0800 1,572,000
Weekend
Weekend
No trading
20.9400 21.8500 20.7100 21.8200 2,197,400
22.0200 22.2900 20.7000 20.8900 2,168,800
21.9800 22.3350 21.6200 21.8600 2,474,200
21.2000 22.0500 20.8600 21.7800 4,121,900
Weekend
Weekend
20.0900 21.3600 19.9200 21.3100 4,567,200
19.9600 20.5500 19.8000 19.8100 1,473,600
19.7300 20.7200 19.6500 19.9800 2,261,400
19.3200 20.0000 19.2100 19.6100 1,015,600
19.2100 19.5900 18.9400 19.3200 1,836,500
Weekend
Weekend
No trading
19.6000 20.3700 18.9250 19.0000 3,994,900
18.6700 19.2900 18.6350 19.0400 1,900,500
18.5100 18.6200 18.2500 18.5500 2,166,900
18.2200 18.5500 18.0100 18.4800 1,952,700
Weekend
Weekend
18.0500 18.3300 17.7350 18.2500 1,048,600
17.3700 18.1100 17.3100 17.9100 1,579,400
17 · 8-K After-hours · 17:04 ET 8-K ↗ 16 · 8-K After-hours · 16:15 ET 8-K ↗
17.6900 18.0500 17.4400 17.5800 1,395,400
17.3000 18.0700 17.1050 17.6900 1,435,500
17.3800 17.5400 16.6600 16.9600 2,338,400
Weekend
Weekend
18.1300 18.1300 17.1100 17.3400 2,702,300
17.1000 18.2600 16.9030 18.0200 7,795,900
15 · DEFA14A Pre-market · 08:36 ET DEFA14A ↗ 14 · 8-K Pre-market · 07:16 ET 8-K ↗
18.5800 18.5800 18.1000 18.3400 1,249,500
18.6700 19.0020 18.2000 18.3900 1,361,200
19.2500 19.5700 18.6000 18.8500 1,492,700
Weekend
Weekend
19.7500 19.8800 19.4300 19.5900 861,500
19.5800 19.8000 19.3100 19.7500 1,017,400
19.9000 20.4250 19.5100 19.6100 1,051,800
19.9900 20.3650 19.6600 19.9000 850,100
No trading
Weekend
Weekend
19.7800 20.5500 19.7500 19.9400 1,146,100
20.0600 20.1400 19.6900 19.7700 1,205,000
19.4000 20.4000 19.4000 20.1300 1,028,400
19.5200 19.5200 19.0000 19.3600 930,100
20.2400 20.8300 19.3700 19.4100 1,357,100
Weekend
Weekend
20.4300 20.9300 20.1600 20.2300 1,842,900
20.9000 21.2400 20.4400 20.5500 2,322,900
20.2000 21.1600 19.9950 20.8900 1,539,100
21.3800 21.5000 20.1700 20.4100 1,203,700
21.7700 22.6900 21.3300 21.3800 2,157,200
Weekend
Weekend
20.5400 21.8600 20.4800 21.4900 2,177,600
20.7100 20.8450 20.2000 20.5400 1,187,900
20.1100 20.6650 19.6600 20.6500 1,699,200
20.0200 20.1500 19.4450 20.1000 1,601,900
19.1200 20.4600 19.1200 19.9600 2,559,200
Weekend
Weekend
20.8300 21.2200 19.0000 19.1100 4,675,400
13 · DEFA14A After-hours · 17:22 ET DEFA14A ↗ 12 · DEF 14A After-hours · 17:20 ET DEF 14A ↗ 11 · 10-Q After-hours · 16:04 ET 10-Q ↗ 10 · 8-K After-hours · 16:02 ET 8-K ↗
20.9200 21.5500 20.7000 21.4300 1,663,300
20.9900 21.0100 20.3700 20.6300 2,437,800
21.2100 21.6200 20.9300 21.1100 1,078,000
21.3900 21.7500 20.6400 21.0000 1,317,300
Weekend
Weekend
21.0700 21.5900 20.7100 21.3900 1,694,100
22.1500 22.5050 20.9650 21.0000 2,488,200
23.5000 23.7000 21.7650 22.0800 2,258,500
23.8000 23.8100 23.1600 23.3300 1,192,900
24.3100 24.3300 23.7100 23.7800 859,600
Weekend
Weekend
24.3000 24.5800 23.5000 24.2300 1,660,300
24.3500 24.3500 23.4600 23.8100 824,900
24.4900 24.7300 23.8800 24.3300 1,464,600
24.2700 24.8000 24.1230 24.4300 887,900
24.7400 25.2100 23.9000 24.2500 884,600
Weekend
Weekend
24.7400 24.8300 24.2100 24.4400 912,000
24.4000 24.9350 24.2800 24.7600 702,700
24.9400 25.3800 24.2000 24.5600 1,730,200
24.0500 24.6650 23.6300 24.6400 1,202,900
25.0800 25.5310 24.2000 24.2900 1,735,300
Weekend
Weekend
No trading
23.4400 25.5200 23.2100 25.1500 2,093,600
23.9100 24.5250 23.1400 23.8800 2,276,000
23.4800 24.1700 23.1000 23.3600 2,725,400
23.5700 23.5700 22.4000 22.4800 1,538,900
Weekend
Weekend
24.5000 24.7100 23.4450 23.4900 1,234,500
23.9100 25.3200 23.8900 24.7000 1,299,300
24.4900 25.5900 24.0300 24.2000 1,558,200
23.8770 24.4050 23.6000 24.0200 1,217,200
24.3900 25.0000 23.9850 24.0900 918,200
Weekend
Weekend
24.0000 25.4400 23.9950 24.2300 2,937,600
23.6500 24.1800 23.3250 24.0000 1,305,200
23.6100 24.0100 23.4500 23.6500 1,295,900
23.9300 24.1100 23.3800 23.7700 1,139,300
23.6600 24.2600 23.5200 24.0400 1,265,600
Weekend
Weekend
24.2400 24.4300 23.0000 23.5000 1,677,700
24.1400 24.3500 23.6000 23.9900 1,770,400
24.0100 24.4400 23.4600 24.4400 1,112,700
23.8800 25.1600 23.3000 24.1600 1,785,500
22.5300 24.8400 22.2100 23.8800 2,553,600
Weekend
Weekend
21.0000 22.2000 21.0000 22.0700 1,390,300
21.3100 21.6050 21.0000 21.5800 1,161,800
21.3900 21.9100 21.0000 21.6200 1,041,000
21.9600 22.3900 21.0000 21.4000 1,177,400
21.6100 22.6800 21.0000 22.1400 1,684,200
Weekend
Weekend
20.0000 21.7600 19.2100 21.7100 2,263,000
9 · 10-K After-hours · 16:04 ET 10-K ↗ 8 · 8-K After-hours · 16:02 ET 8-K ↗
20.7500 20.8750 20.2500 20.6700 1,358,400
20.6300 20.8000 20.3000 20.7500 1,272,800
19.9700 20.6350 19.7800 20.5300 665,100
19.8400 20.4000 19.4550 19.9000 813,400
Weekend
Weekend
20.6400 20.7100 19.6800 19.6900 1,722,400
20.2700 20.9000 20.0800 20.6300 932,000
20.2100 20.7500 20.0200 20.2500 995,800
20.4000 20.6050 20.0700 20.3400 621,300
No trading
Weekend
Weekend
21.0400 21.3900 20.4300 20.4800 1,447,400
21.8300 21.8300 20.9500 21.1400 957,100
21.3600 21.8600 20.5000 21.7100 1,687,900
21.0900 22.0000 21.0100 21.3200 1,069,100
20.9200 21.3500 20.7450 21.1900 1,085,600
Weekend
Weekend
20.4800 21.2500 20.2500 21.0100 1,481,000
20.4900 21.2600 20.0000 20.1500 1,669,500
21.3100 21.4000 20.1800 20.4300 933,000
21.5300 21.8900 20.7000 21.2500 836,200
20.3100 21.6800 20.3100 21.3500 1,372,700
Weekend
Weekend
20.5400 20.7100 19.9900 20.3100 1,996,400
20.4370 21.0500 20.2300 20.5900 1,035,500
21.3000 21.4100 20.4950 20.5500 863,800
21.1600 21.4950 20.6600 21.3100 696,900
20.0800 22.1800 19.7900 21.4000 2,512,000
Weekend
Weekend
20.7000 21.0000 19.9500 20.2500 1,084,200
20.4800 21.0200 20.2500 20.7900 1,295,200
20.2100 20.6300 20.0650 20.5200 1,113,300
20.1000 20.7100 19.7100 20.2300 1,142,200
No trading
Weekend
Weekend
20.6400 21.1900 20.2700 20.5200 705,300
21.2400 21.4900 20.6100 20.6700 1,388,800
20.4900 21.4700 20.3000 21.4400 1,289,400
20.3400 20.5400 19.5700 20.4700 1,190,900
7 · 8-K After-hours · 16:36 ET 8-K ↗
21.2900 21.6300 20.0700 20.7200 1,451,900
Weekend
Weekend
21.3800 21.6000 20.9100 21.0000 1,042,500
21.8500 21.9500 20.9750 21.3900 1,570,300
20.3800 22.4050 20.3800 22.1100 2,014,900
20.0000 20.5900 19.7700 20.3400 1,426,600
21.3500 21.5400 19.6100 20.2200 1,660,100
Weekend
Weekend
21.0800 21.3400 20.8110 21.3000 1,096,300
No trading
20.8200 21.3700 20.6150 21.0100 958,800
20.9100 21.1100 20.4200 20.7400 1,241,300
21.1200 21.4100 20.8710 21.0700 703,300
Weekend
Weekend
21.7300 21.7300 21.0700 21.3000 906,200
No trading
21.6600 21.7600 21.3400 21.6000 453,100
21.4700 22.7300 21.4600 21.7000 1,498,000
20.5200 21.5000 20.2800 21.4800 1,371,700
Weekend
Weekend
6 · 8-K After-hours · 16:30 ET 8-K ↗
20.3400 21.1800 20.2300 20.7700 2,264,300
20.5900 20.7300 20.1200 20.2300 1,033,800
20.6900 20.8000 19.7200 20.3700 1,621,100
20.6400 21.4250 20.6000 20.7200 1,694,000
20.4700 21.0550 20.3400 20.8800 1,485,700
Weekend
Weekend
20.3100 20.5200 20.0000 20.3700 1,183,600
20.7000 21.2200 20.2500 20.4100 1,890,400
19.6500 20.8000 19.1100 20.6200 2,400,500
19.9500 20.2500 19.4800 19.5100 1,978,400
20.3200 20.4700 19.4300 19.9800 2,370,300
Weekend
Weekend
19.7700 20.5900 19.4250 20.3200 2,356,000
19.5500 20.0300 19.3100 19.7400 1,489,100
18.9100 19.9500 18.7300 19.7100 1,910,400
19.2000 19.2700 18.3600 18.7900 1,714,000
19.7500 19.9100 18.9810 19.1200 1,648,000
Weekend
Weekend
19.9900 20.2000 19.7100 19.8200 852,300
No trading
19.5600 20.0700 19.3800 19.8700 1,959,200
19.7600 20.0800 18.8700 19.4500 2,767,800
18.1300 19.9800 17.9700 19.7600 4,458,200
Weekend
Weekend
16.9500 17.6200 16.7500 17.4400 1,873,400
17.1000 18.0000 16.9300 17.0500 3,106,900
16.9600 17.4600 16.6500 16.7100 1,940,600
17.0200 17.4400 16.9000 17.0900 1,558,400
16.5400 17.5000 16.3600 17.1800 3,156,800
Weekend
Weekend
16.5800 17.2650 16.4200 16.6200 2,326,900
16.7900 18.0000 15.5500 16.6600 4,569,900
17.5600 17.8000 16.6900 16.7900 2,137,300
15.7600 17.7500 15.6650 17.7300 3,527,700
15.3300 16.5000 15.2500 15.7200 2,604,600
Weekend
Weekend
14.5700 15.0600 13.8800 15.0400 2,162,800
15.0300 15.5500 14.6400 14.6900 2,301,200
15.1200 15.2900 14.2670 15.1000 3,362,900
13.6000 15.7990 13.1500 15.3500 7,204,800
5 · 10-Q After-hours · 16:04 ET 10-Q ↗ 4 · 8-K After-hours · 16:02 ET 8-K ↗
13.6100 14.3600 13.3550 13.7600 4,143,700
Weekend
Weekend
13.3400 14.0600 13.3000 13.7000 3,335,900
13.4100 13.9750 13.2500 13.3900 2,207,700
13.4000 13.6200 13.0600 13.2200 2,974,900
13.0300 13.9900 13.0200 13.5100 3,433,400
13.3900 14.0300 12.9900 13.1100 5,288,200
Weekend
Weekend
3 · 8-K After-hours · 16:40 ET 8-K ↗
15.0400 15.7900 13.0300 13.5300 14,951,300
15.1700 15.5500 14.6700 14.6800 1,994,500
15.2000 15.9300 15.0100 15.1100 2,545,600
15.7000 15.8500 15.1550 15.2000 2,160,200
14.5600 15.7800 14.5400 15.5700 5,077,400
Weekend
Weekend
14.8750 15.3900 14.0800 14.3000 4,379,900
15.5000 16.0400 14.8800 15.0500 3,739,000
15.4300 15.7900 15.0100 15.0400 2,281,500
15.0000 15.4000 14.6900 15.3100 1,668,800
16.1900 16.2800 15.0100 15.2000 2,081,400
Weekend
Weekend
16.2800 16.4800 15.4110 16.0600 2,700,100
16.5100 16.6900 16.0000 16.2000 3,598,600
16.6800 16.8000 16.1800 16.5000 2,094,800
16.6250 16.8000 16.3100 16.4500 1,521,900
15.6000 16.4100 15.4800 16.4000 1,652,000
Weekend
Weekend
15.4400 15.8800 15.2000 15.6000 1,777,300
15.7700 15.9900 14.9250 15.4400 1,546,000
15.5000 15.9200 15.2700 15.6800 1,437,000
15.5300 15.8150 15.3500 15.3850 1,646,200
15.7900 15.8700 14.9020 15.5600 2,394,300
Weekend
Weekend
15.1800 15.8400 14.8600 15.6800 2,918,700
15.0000 15.5500 14.9800 15.0300 2,369,000
14.8900 15.1670 14.8350 15.0100 1,885,200
14.8100 15.1250 14.6800 14.8500 1,301,300
14.8100 15.0600 14.5300 14.8900 1,489,200
Weekend
Weekend
15.5100 15.7700 14.6100 14.7800 3,468,900
14.9100 15.5600 14.8910 15.4500 2,150,800
15.0000 15.3600 14.6700 14.7500 1,491,800
15.8800 15.8800 14.9850 15.0400 2,042,900
15.8000 15.9400 15.4250 15.8400 2,075,100
Weekend
Weekend
16.4200 16.5000 15.5300 15.5500 1,707,000
15.7700 16.4700 15.5900 16.3700 1,872,300
16.4000 16.6500 15.7200 15.7300 1,782,000
16.1500 16.3100 15.7110 15.9300 1,171,500
17.0300 17.0800 16.1800 16.3300 1,473,700
Weekend
Weekend
16.4000 17.2300 16.2900 17.0400 2,730,000
16.2700 16.4730 15.8300 16.1900 1,442,300
16.1200 16.6150 15.8100 16.1300 2,005,700
16.5000 16.8850 15.9400 16.1200 1,809,300
No trading
Weekend
Weekend
16.3200 16.5600 15.8800 16.3300 1,608,800
16.3800 17.2400 16.2500 16.3200 2,242,900
15.8500 16.2950 15.5100 16.2600 4,038,300
15.7500 15.9000 15.2910 15.8500 3,584,100
16.2600 16.4300 15.5400 15.6600 1,443,900
Weekend
Weekend
15.9700 16.3800 15.8100 16.2400 1,469,900
15.6300 16.0400 15.4320 15.8400 1,229,200
15.4300 15.8900 15.3700 15.7400 2,168,400
15.8700 16.3300 15.3600 15.3950 1,970,800
15.6400 16.0300 15.5700 15.8700 1,859,400
Weekend
Weekend
14.8000 15.9800 14.8000 15.7400 5,089,300
13.3850 14.8100 13.2600 14.7300 3,022,600
13.1700 13.6000 13.0200 13.4500 2,343,700
12.6700 13.2900 12.6200 12.9700 2,334,400
12.4300 12.6500 12.1000 12.5100 2,983,200
Weekend
Weekend
12.6800 12.9450 12.2300 12.4800 2,854,000
12.9000 13.1150 12.5900 12.7200 2,141,300
12.9000 13.2500 12.3100 12.8900 5,888,600
12.4100 12.9900 11.9100 12.5700 9,129,800
2 · 10-Q After-hours · 16:05 ET 10-Q ↗ 1 · 8-K After-hours · 16:02 ET 8-K ↗
9.9900 10.4700 9.6800 10.3800 3,199,500
Weekend
Weekend
9.8700 10.0300 9.4900 9.9800 1,733,000
9.7700 10.0400 9.5650 9.9200 1,989,100
10.6100 10.7500 9.8500 9.9900 2,131,200
9.8200 10.6350 9.4900 10.3500 3,300,100
9.6600 9.7150 9.4200 9.5700 1,281,700
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.

18 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
15 DEFA14A DEFA14A (opens SEC filing in a new tab) Pre-market · 08:36 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:16 ET Summarise
13 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 17:22 ET Summarise
12 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 17:20 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
9 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:36 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
5 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:40 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise