Ultragenyx Pharmaceutical Inc RARE

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Ultragenyx Pharmaceutical Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 15.6500 · FX 1 USD = 1.277900 SGD · about SGD 19.9991 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 33.53 → 15.65 · -53.3%
36.54024.71012.880 1 2 3 4 5 6 7 8 9 10 11 12 13,14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 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
15.9200 15.9400 15.4900 15.6500 1,788,779
15.7800 16.2500 15.6000 15.9500 2,374,100
16.0200 16.3100 15.7850 15.9200 2,825,000
15.0100 16.2700 14.9900 16.0200 3,546,000
29 · 8-K After market open · 13:00 ET 8-K ↗
14.6700 15.0800 14.5350 15.0700 2,984,400
Weekend
Weekend
15.1100 15.2100 14.4400 14.5400 2,924,000
14.8700 15.3700 14.7900 15.1700 3,332,000
28 · 8-K After market open · 13:00 ET 8-K ↗
14.9300 15.1800 14.6700 14.9000 2,953,000
15.2700 15.3900 14.6900 14.9200 5,305,200
15.4200 15.4900 15.1000 15.3000 2,898,600
Weekend
Weekend
15.3000 15.7300 15.2300 15.4800 2,927,600
14.7900 15.5200 14.4300 15.2900 5,396,500
27 · 8-K After market open · 13:00 ET 8-K ↗
14.3700 15.2530 14.3450 14.8900 4,162,500
14.6000 14.7000 14.0800 14.4600 3,892,000
15.2500 15.3100 14.2100 14.5000 4,656,500
Weekend
Weekend
14.9000 15.2800 14.6700 15.2200 3,880,500
15.0300 15.2500 14.6200 14.7500 4,116,000
15.4750 15.5300 14.8600 15.0300 4,421,200
14.4550 15.5000 14.1100 15.3200 5,884,600
14.3300 14.4700 14.1100 14.4100 4,939,900
Weekend
Weekend
14.8700 14.9400 14.1510 14.5000 4,303,700
14.7300 14.8700 14.5450 14.7700 3,488,700
15.4000 15.4980 14.5400 14.8800 5,704,900
14.7800 16.1200 14.4750 15.6150 8,134,200
14.5800 15.0100 14.2750 14.6500 5,269,500
Weekend
Weekend
14.7900 15.0700 14.0700 14.5100 13,328,100
26 · 8-K After market open · 15:55 ET 8-K ↗
13.2200 14.5750 13.2000 14.5000 12,427,800
13.0700 13.2200 12.7300 12.8800 5,031,200
13.5600 13.5900 12.8800 13.0700 5,655,000
14.4400 14.4440 13.6000 13.6100 5,929,200
Weekend
Weekend
14.4300 14.7000 14.1300 14.3000 3,252,100
14.2500 14.4400 13.9500 14.4000 3,659,800
14.7700 15.1950 14.2700 14.3100 4,573,600
15.0970 15.2500 14.6280 14.8800 5,926,500
No trading
Weekend
Weekend
15.4750 16.0800 15.2300 15.3000 11,494,500
14.0000 15.0000 13.8100 14.8500 27,159,700
25 · 8-K After-hours · 16:04 ET 8-K ↗
25.9600 26.7950 25.5700 26.5300 7,170,800
25.2150 25.8500 25.1050 25.8100 1,871,300
25.4500 25.9000 24.7310 25.2100 1,934,100
Weekend
Weekend
26.5400 26.7300 25.3700 25.6100 1,612,600
26.3800 26.5600 25.8300 26.2600 1,142,600
26.5450 26.6650 25.6130 26.4400 1,666,100
26.2500 26.9150 26.0000 26.4600 3,807,400
25.7500 26.0900 25.3000 25.7200 1,536,400
Weekend
Weekend
25.7600 26.7500 25.6900 25.8300 2,392,300
28.3900 28.5000 25.0400 25.3200 3,841,100
24 · 8-K After-hours · 17:24 ET 8-K ↗
26.2800 26.6800 26.0000 26.2400 2,846,600
25.6800 26.1090 24.9700 25.4900 1,793,100
26.2600 26.5100 25.8100 26.1300 1,315,700
Weekend
Weekend
26.3000 26.5800 25.7500 26.4900 1,222,200
27.0700 27.1700 26.3300 26.3800 946,100
26.7900 27.1600 26.1100 26.8600 1,545,100
27.1600 27.5870 26.4200 26.9600 2,138,800
23 · 8-K Pre-market · 08:30 ET 8-K ↗
25.9100 27.1100 25.5100 26.8000 2,364,700
Weekend
Weekend
26.3400 26.7100 25.3000 25.9100 3,829,200
24.9900 26.1000 24.8050 25.8200 1,960,500
28.4800 28.4800 24.6050 24.9300 2,642,400
22 · 10-Q Next filing day · accepted 04 Aug, 18:07 ET 10-Q ↗ 21 · 8-K After-hours · 16:09 ET 8-K ↗
25.1900 26.1300 25.0050 25.8100 2,103,600
24.9200 25.4000 24.0100 25.0200 2,085,700
Weekend
Weekend
25.9500 26.0750 24.5950 24.9100 1,537,400
25.0400 26.1000 24.5450 26.0400 2,675,800
25.7700 26.1500 24.8700 25.0000 2,330,700
26.5700 27.2850 25.2200 25.9800 1,844,400
27.3700 28.0000 26.6900 26.8900 1,766,800
Weekend
Weekend
27.3200 27.4800 26.4950 26.9000 1,495,600
27.2800 28.0500 27.0000 27.0200 1,888,500
28.6200 28.8600 27.5000 27.6450 1,546,500
29.0050 29.1000 28.2300 28.6200 2,275,900
29.3300 30.0300 28.5000 28.5300 1,255,100
Weekend
Weekend
29.1600 30.0700 28.9000 29.2800 1,500,500
31.8600 31.9000 29.8300 30.2200 1,829,600
31.6100 31.8000 30.6400 31.7100 1,012,600
33.3600 33.5800 31.9150 32.0300 1,078,000
33.0650 33.3000 31.8100 33.2200 1,394,300
Weekend
Weekend
34.6100 34.8100 32.7150 33.8200 1,578,100
34.7100 34.8050 33.3400 34.6100 1,942,600
35.2400 35.7900 34.1950 34.6700 2,775,600
34.1900 36.5700 33.5700 35.8700 4,421,800
33.2800 34.1900 32.8940 33.7000 1,553,100
Weekend
Weekend
No trading
32.8000 33.5000 32.4800 33.4700 1,239,000
33.1300 33.4900 32.3350 32.3800 2,635,800
31.0100 35.0000 30.4770 33.3900 6,939,200
30.7700 31.1600 30.1900 30.6800 3,995,200
Weekend
Weekend
29.3900 30.9900 29.3600 30.7700 17,178,100
29.5100 30.5700 29.0700 29.2500 1,926,000
29.0200 30.1400 29.0100 29.1100 1,727,800
28.5800 29.3900 28.5000 28.7600 2,043,000
27.5600 29.3500 27.4900 29.0300 2,067,500
Weekend
Weekend
No trading
27.5400 28.1800 27.3100 27.4400 3,562,400
25.0900 27.9000 25.0900 26.9100 3,243,000
25.5400 25.6600 24.5100 24.8500 2,747,400
24.6200 25.3800 24.5000 25.3800 1,479,200
Weekend
Weekend
24.0800 24.8100 24.0050 24.3500 1,846,700
22.9300 24.0800 22.4800 23.9800 1,527,200
22.5600 23.2300 22.4250 22.9700 1,200,800
22.1400 23.0450 22.0300 22.7900 1,622,600
22.1500 22.2900 21.3900 21.5900 1,689,300
Weekend
Weekend
23.3100 23.4100 21.7400 21.9100 1,117,000
22.5100 23.4700 22.1800 23.3100 1,412,100
21.8500 22.6050 21.8050 22.4100 1,799,400
22.4900 22.6350 21.3300 21.7800 2,029,000
23.7700 24.0550 22.6200 22.8500 2,328,000
Weekend
Weekend
23.5600 24.0750 23.3050 23.9400 1,843,200
23.4100 23.9000 22.7400 23.2600 1,258,000
23.1300 23.5500 23.0000 23.3900 1,685,000
23.6200 23.7500 23.0100 23.1400 1,219,400
No trading
Weekend
Weekend
23.6800 24.1200 23.2550 23.3900 1,130,500
23.4200 24.1200 23.1050 23.7100 1,272,100
22.5500 23.7200 22.5500 23.3700 1,547,800
24.2000 24.4100 22.2300 22.4500 2,121,400
20 · 8-K After market open · 14:15 ET 8-K ↗
25.1200 25.1700 23.9800 24.1900 1,548,700
Weekend
Weekend
25.7100 25.9500 24.8400 25.0000 1,519,100
26.5300 26.6700 25.7700 25.8000 1,161,400
26.6100 26.9400 26.2100 26.4600 1,363,100
26.3800 26.8850 26.0100 26.8400 1,265,800
26.4500 27.4200 26.2100 26.3000 1,861,700
Weekend
Weekend
26.0500 26.6700 25.9300 26.1200 1,557,100
26.1550 26.5000 25.5300 26.1300 1,978,500
25.9100 27.2700 24.2300 25.9300 3,454,800
19 · 10-Q Next filing day · accepted 05 May, 18:18 ET 10-Q ↗ 18 · 8-K After-hours · 16:06 ET 8-K ↗
24.9600 25.3200 24.4500 25.0100 1,482,000
24.6900 25.3200 24.4900 24.8100 1,849,100
Weekend
Weekend
24.9000 25.1150 24.3650 24.7700 1,407,200
17 · DEFA14A After-hours · 16:04 ET DEFA14A ↗
24.5200 25.0750 24.1700 24.6900 1,790,500
24.1300 24.7600 23.7100 24.1800 2,058,700
24.3200 25.1400 24.2500 24.5300 1,725,300
24.1500 25.0500 23.7800 23.9900 1,810,300
Weekend
Weekend
24.3700 24.4400 23.6850 24.1000 1,538,200
24.6000 25.1100 23.9500 24.2800 1,464,500
24.3100 24.7200 24.0500 24.6100 1,349,200
25.1700 25.2150 23.9500 24.1000 1,387,100
24.6200 25.2800 24.2500 25.0600 1,447,700
Weekend
Weekend
24.9400 25.2400 24.5400 24.8100 1,725,500
25.6400 26.1900 24.3300 24.5200 1,812,200
24.7500 25.4500 24.7100 25.1800 1,943,900
23.3500 24.7400 23.3500 24.5700 1,820,000
23.1100 24.1200 23.0100 23.6300 1,472,500
Weekend
Weekend
24.0200 24.1300 23.0600 23.3000 1,551,100
22.9200 24.1200 22.9200 23.9100 1,965,700
23.6400 23.9900 22.8750 23.1500 1,615,500
22.9100 23.1800 22.3400 23.1500 1,478,500
22.4500 22.9700 22.2800 22.8700 1,351,900
Weekend
Weekend
No trading
21.0500 22.4500 20.7900 22.4500 1,772,500
16 · 8-K Pre-market · 08:45 ET 8-K ↗
20.9700 21.5600 20.9200 21.4200 2,310,500
19.9800 21.0700 19.5400 20.9500 2,964,100
19.4800 19.7700 19.1300 19.3000 3,655,400
15 · 8-K Pre-market · 08:45 ET 8-K ↗
Weekend
Weekend
14 · DEFA14A After-hours · 16:30 ET DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS ↗ 13 · DEF 14A After-hours · 16:30 ET DEFINITIVE PROXY STATEMENT ↗
20.0000 20.0920 19.1000 19.3800 1,530,400
19.6900 20.4500 19.6100 20.0000 2,293,900
18.7500 19.9400 18.7000 19.8500 1,892,300
19.3600 19.4000 18.2900 18.5000 3,782,800
20.1750 20.3250 19.5300 20.2700 2,065,800
Weekend
Weekend
20.5200 20.6770 19.8600 19.8700 3,797,400
20.1600 20.5700 19.9000 20.4200 1,654,100
21.3700 21.4960 20.3900 20.4600 2,879,900
21.8000 22.1950 21.5450 21.6000 1,401,100
21.5700 22.0050 21.3900 21.8200 980,800
Weekend
Weekend
21.9400 22.2700 21.2900 21.3400 2,543,200
21.9300 22.2900 21.1200 21.7100 1,462,900
12 · 8-K Pre-market · 08:45 ET 8-K ↗
22.7800 22.8400 21.7400 22.2100 3,501,400
22.7400 23.1900 22.3800 22.8400 1,138,400
21.4000 22.8100 21.3700 22.6100 2,256,800
Weekend
Weekend
21.2600 21.4050 20.6050 21.2500 2,148,800
21.5800 21.9800 21.3900 21.4600 2,426,600
22.0700 22.1900 21.4700 21.8000 2,277,100
22.4000 22.8750 21.8800 22.0700 1,722,100
22.5400 23.1900 22.5100 23.0200 1,668,400
Weekend
Weekend
22.9500 23.4550 22.5400 23.3900 1,405,200
22.8300 23.1700 22.4800 23.0400 1,341,500
22.7200 23.0760 22.4600 22.9100 1,095,100
22.6500 23.0000 22.4100 22.7500 1,429,700
22.8900 23.7900 22.3900 22.5100 2,234,300
11 · 8-K Pre-market · 08:45 ET 8-K ↗
Weekend
Weekend
21.5600 22.8700 21.3100 22.7200 2,130,100
20.4100 22.1550 20.0800 21.8300 2,351,800
10 · 10-K After-hours · 16:59 ET 10-K ↗
20.0000 20.6150 19.6300 20.4500 2,113,000
20.6500 20.8850 19.7800 20.1800 3,155,600
No trading
Weekend
Weekend
21.5400 23.1700 19.6050 20.5200 7,200,600
9 · 8-K After-hours · 16:11 ET 8-K ↗
23.9600 24.3480 22.9300 23.5000 1,893,900
24.2300 24.3500 23.2700 23.8800 1,402,700
23.4900 24.6790 23.4900 24.2000 1,216,300
24.6600 24.6700 23.7800 23.8800 1,707,200
Weekend
Weekend
24.2500 24.8700 23.8900 24.7000 2,679,700
24.5900 24.9300 23.7600 23.7900 1,720,600
25.0700 25.0700 24.0800 24.6900 1,859,800
24.9200 25.8200 24.3650 24.8000 2,604,800
8 · 8-K Pre-market · 08:15 ET 8-K ↗
23.5600 24.9100 23.5600 24.7600 3,438,000
Weekend
Weekend
24.1300 24.5900 23.2600 24.0700 3,775,600
7 · 8-K Pre-market · 08:45 ET 8-K ↗
24.4000 24.7000 23.9800 24.2700 1,689,000
24.9600 24.9600 24.3300 24.4400 1,810,200
24.2300 25.0000 24.2300 24.6200 1,629,100
24.1000 24.9000 24.0900 24.3100 1,859,500
Weekend
Weekend
23.3700 24.5300 23.1600 24.2100 3,695,700
22.7800 23.8700 22.7110 23.4000 2,323,900
22.7200 22.9750 22.4900 22.7500 3,048,900
22.1200 22.9600 22.0000 22.6300 2,275,800
No trading
Weekend
Weekend
23.3600 23.7700 22.4300 22.4900 1,900,600
23.8700 24.1200 23.0900 23.5000 1,760,800
24.1200 24.3200 23.7100 24.0700 2,264,700
24.4800 24.5250 23.4700 24.1100 3,545,100
22.9500 24.6500 22.4000 24.3700 4,596,500
6 · 8-K Pre-market · 07:45 ET 8-K ↗
Weekend
Weekend
23.4600 23.9000 22.5000 22.5100 2,764,700
24.3000 25.0950 22.9200 23.2100 2,681,800
22.8600 24.6200 22.7300 24.2000 4,460,400
22.9400 23.1600 22.0700 22.5400 3,744,400
23.4200 23.7500 22.6400 23.1100 3,956,400
Weekend
Weekend
22.8400 24.0000 22.5000 23.6000 3,639,700
No trading
22.5000 23.0600 21.8960 23.0000 3,677,300
5 · 8-K After-hours · 16:11 ET 8-K ↗
19.8500 22.8700 19.8000 22.7800 11,045,700
19.3200 20.4900 18.4100 19.7200 21,699,800
4 · 8-K Pre-market · 08:45 ET 8-K ↗
Weekend
Weekend
34.3800 34.4700 33.9000 34.1900 629,200
No trading
34.4900 34.7600 34.1350 34.5800 721,600
34.7300 34.8900 34.0700 34.1300 841,300
33.5700 35.1150 33.2100 34.7500 2,342,800
Weekend
Weekend
32.8400 34.0300 32.6500 33.5000 2,497,100
33.3100 34.1700 32.6400 32.8400 1,475,300
34.4300 34.6400 32.8450 33.2100 1,791,500
36.0500 36.5400 34.1880 34.3400 1,487,600
36.6800 36.8110 35.8200 36.2300 1,715,200
Weekend
Weekend
36.3900 36.5390 35.9330 36.2300 1,589,500
36.4200 36.7400 35.9150 36.2000 1,320,900
36.3800 36.4800 35.6500 36.0000 1,684,700
36.3900 36.7100 35.6800 36.3000 2,409,200
39.0000 39.8900 36.2200 36.4500 1,659,200
Weekend
Weekend
36.6200 37.2500 35.9350 36.3800 1,281,700
36.4600 37.2500 36.0800 36.5400 1,242,900
33.5300 36.5400 33.4800 36.4500 2,023,200
33.3700 34.0850 33.1600 33.4700 949,800
34.3150 34.3700 33.1850 33.3700 1,042,700
Weekend
Weekend
33.8200 34.8400 33.6000 34.7500 785,200
No trading
33.2200 34.0000 32.9800 33.7600 1,304,200
33.0900 33.5900 32.0600 33.5250 1,513,900
33.3250 34.2100 32.5750 32.7800 1,878,400
Weekend
Weekend
31.5200 33.7900 31.2500 33.5900 1,683,000
32.2500 32.9050 31.0000 31.1800 1,028,300
32.6600 32.8900 31.4800 31.8600 1,068,100
32.3800 33.2100 31.8500 32.8300 930,000
32.8000 33.4100 32.3100 32.5400 1,117,300
Weekend
Weekend
32.4200 34.0100 32.3750 33.0800 1,265,300
32.9300 33.8200 32.4100 32.9000 1,257,200
33.2500 33.7400 32.9500 33.5300 1,078,900
31.9500 33.2800 31.5000 33.2500 1,172,300
31.1100 32.0750 30.3800 31.9400 1,157,200
Weekend
Weekend
30.4200 30.7500 29.3600 30.6300 1,355,300
31.8500 31.8800 30.0520 30.9500 1,872,500
28.9000 32.2500 28.5600 31.8700 2,780,600
3 · 10-Q Next filing day · accepted 04 Nov, 18:09 ET 10-Q ↗ 2 · 8-K After-hours · 16:12 ET 8-K ↗
32.9700 33.5000 32.4100 32.4600 1,524,800
34.0000 34.9600 32.9350 33.4700 1,407,500
Weekend
Weekend
34.9900 35.3800 34.3550 34.6000 1,267,700
34.3700 35.5700 34.2600 35.1700 1,107,500
1 · 8-K Pre-market · 08:30 ET 8-K ↗
34.5300 35.7700 33.9400 34.5900 1,264,900
34.9100 35.9500 34.4700 34.7700 1,188,000
34.4100 35.4800 34.0000 35.3100 1,746,000
Weekend
Weekend
33.6900 34.2100 33.2500 33.5300 1,083,500

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.

29 8-K 8-K (opens SEC filing in a new tab) After market open · 13:00 ET Summarise
28 8-K 8-K (opens SEC filing in a new tab) After market open · 13:00 ET Summarise
27 8-K 8-K (opens SEC filing in a new tab) After market open · 13:00 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) After market open · 15:55 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:24 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
22 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 04 Aug, 18:07 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After market open · 14:15 ET Summarise
19 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 05 May, 18:18 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
17 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
14 DEFA14A DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
13 DEF 14A DEFINITIVE PROXY STATEMENT (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:59 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:15 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:45 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 04 Nov, 18:09 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise