aTyr Pharma, Inc ATYR

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aTyr Pharma, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 0.1651 · FX 1 USD = 1.277900 SGD · about SGD 0.2110 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 0.97 → 0.17 · -82.9%
1.0500.6080.165 1,2 3 4,5 6 7,8 9 10,11 12 13 14 15,16 17 18 19 20 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
0.1703 0.1720 0.1600 0.1651 1,293,515
0.1700 0.1800 0.1680 0.1700 1,040,000
0.1730 0.1800 0.1710 0.1720 1,232,600
0.1710 0.1780 0.1650 0.1730 1,321,200
0.1800 0.1840 0.1650 0.1720 2,107,300
Weekend
Weekend
20 · 8-K After-hours · 20:02 ET 8-K ↗
0.1890 0.1910 0.1740 0.1740 1,809,100
0.1900 0.1970 0.1840 0.1840 2,224,600
0.2000 0.2070 0.1810 0.1830 2,570,300
0.2200 0.2200 0.2000 0.2010 2,638,900
0.2480 0.2500 0.2150 0.2150 2,025,500
Weekend
Weekend
0.2550 0.2590 0.2460 0.2460 996,600
0.2700 0.2730 0.2500 0.2550 2,752,600
0.2790 0.2890 0.2720 0.2780 1,120,900
0.2900 0.2960 0.2810 0.2830 1,019,000
0.2830 0.2940 0.2650 0.2900 1,810,100
Weekend
Weekend
0.2870 0.2960 0.2820 0.2870 1,980,700
0.3050 0.3100 0.2900 0.2940 2,195,600
0.3080 0.3200 0.3000 0.3030 1,796,500
0.2920 0.3180 0.2720 0.3080 3,853,400
0.2940 0.3160 0.2920 0.2980 4,132,600
Weekend
Weekend
0.3090 0.3170 0.2820 0.3050 8,360,400
19 · 8-K After market open · 11:47 ET 8-K ↗
0.4040 0.4070 0.3240 0.3380 130,119,600
0.3600 0.3800 0.3500 0.3750 1,198,100
0.3820 0.3820 0.3510 0.3560 1,332,300
0.3800 0.3800 0.3690 0.3730 916,500
Weekend
Weekend
0.3700 0.3880 0.3600 0.3630 1,263,100
0.3950 0.3980 0.3700 0.3770 1,001,600
0.3960 0.3960 0.3790 0.3840 954,200
0.3940 0.4010 0.3750 0.3890 1,058,800
0.4200 0.4340 0.3820 0.3890 1,723,900
Weekend
Weekend
18 · DEF 14A After-hours · 16:06 ET DEF 14A ↗
0.4360 0.4460 0.4220 0.4300 1,425,400
0.4690 0.4690 0.4300 0.4320 923,400
0.4800 0.4860 0.4510 0.4550 829,800
0.5100 0.5100 0.4800 0.4810 631,900
No trading
Weekend
Weekend
0.4900 0.5080 0.4870 0.4970 252,900
0.5050 0.5090 0.4800 0.5040 380,700
0.4820 0.5090 0.4820 0.4930 700,000
0.5300 0.5340 0.4750 0.4770 1,168,200
0.5400 0.5430 0.5010 0.5320 1,023,500
17 · PRE 14A Pre-market · 06:52 ET PRE 14A ↗
Weekend
Weekend
0.5600 0.5650 0.5300 0.5400 256,900
0.5620 0.5620 0.5450 0.5550 294,300
0.5730 0.5730 0.5310 0.5510 304,200
0.5390 0.5700 0.5320 0.5700 675,500
0.5110 0.5340 0.4900 0.5300 689,400
Weekend
Weekend
0.5100 0.5340 0.5000 0.5020 522,400
0.5170 0.5240 0.5000 0.5030 766,700
0.5120 0.5380 0.5030 0.5330 600,400
0.5300 0.5450 0.5030 0.5040 679,200
0.5410 0.5700 0.5180 0.5190 625,600
Weekend
Weekend
0.5600 0.5870 0.5500 0.5590 656,600
0.5500 0.6000 0.5440 0.5530 1,270,200
0.5440 0.5570 0.5250 0.5400 331,500
0.5400 0.5420 0.5140 0.5340 495,300
0.5350 0.5380 0.5060 0.5290 610,900
Weekend
Weekend
16 · 10-Q After-hours · 16:07 ET 10-Q ↗ 15 · 8-K After-hours · 16:04 ET 8-K ↗
0.4960 0.5200 0.4960 0.5110 369,800
0.5290 0.5290 0.4900 0.5020 582,600
0.5290 0.5300 0.5030 0.5290 458,000
0.5100 0.5350 0.5060 0.5290 974,700
0.4930 0.5100 0.4800 0.4920 774,600
Weekend
Weekend
14 · 8-K After-hours · 16:44 ET 8-K ↗
0.4950 0.5000 0.4750 0.4860 396,700
0.4800 0.4930 0.4760 0.4800 625,000
0.4840 0.5000 0.4750 0.4830 594,500
0.4860 0.5030 0.4700 0.4940 931,800
0.4800 0.4970 0.4750 0.4900 683,800
Weekend
Weekend
0.5000 0.5090 0.4730 0.4730 825,700
0.4790 0.5100 0.4560 0.4980 1,375,000
0.4800 0.5060 0.4800 0.4870 897,400
0.4900 0.5070 0.4800 0.4860 864,700
0.5040 0.5250 0.4860 0.4860 811,100
Weekend
Weekend
0.5100 0.5200 0.4830 0.5100 713,500
0.5340 0.5420 0.4970 0.5160 1,371,400
0.5240 0.5610 0.5000 0.5340 6,280,800
0.5200 0.5210 0.4700 0.4860 938,200
0.5310 0.5670 0.5010 0.5040 797,800
Weekend
Weekend
0.5800 0.5900 0.5350 0.5440 1,404,900
0.6400 0.6460 0.5770 0.5820 1,467,000
0.5880 0.6800 0.5880 0.6430 2,381,100
0.6500 0.7000 0.6000 0.6060 2,355,200
0.6000 0.6570 0.6000 0.6540 1,665,000
Weekend
Weekend
No trading
0.5900 0.6060 0.5730 0.5930 1,475,700
0.5970 0.6240 0.5710 0.5900 1,442,000
0.5600 0.6100 0.5500 0.5970 1,355,700
0.5400 0.5700 0.5280 0.5660 1,441,100
Weekend
Weekend
0.5500 0.5810 0.5200 0.5280 12,153,200
0.5800 0.5900 0.5430 0.5600 1,787,700
0.5200 0.5950 0.5110 0.5620 3,640,700
0.4630 0.5600 0.4630 0.5370 2,898,100
0.4540 0.4880 0.4530 0.4700 1,875,300
Weekend
Weekend
No trading
0.4760 0.4880 0.4500 0.4510 1,533,400
0.4420 0.4970 0.4420 0.4630 1,582,500
0.4430 0.4600 0.4410 0.4480 643,200
0.4690 0.4760 0.4420 0.4430 1,620,900
Weekend
Weekend
0.4730 0.4750 0.4400 0.4400 1,425,500
0.4690 0.4800 0.4400 0.4750 1,230,500
0.4620 0.4810 0.4480 0.4680 969,300
0.4550 0.4740 0.4360 0.4560 1,777,000
13 · 8-K After-hours · 16:04 ET 8-K ↗
0.4730 0.4740 0.4400 0.4420 1,778,400
Weekend
Weekend
0.5210 0.5210 0.4560 0.4700 2,784,600
0.5070 0.5400 0.5070 0.5130 1,472,700
0.5070 0.5290 0.5000 0.5000 1,730,300
0.5600 0.5600 0.5170 0.5200 1,936,700
12 · 8-K After-hours · 16:04 ET 8-K ↗
0.5310 0.5910 0.5100 0.5470 4,420,200
Weekend
Weekend
0.5350 0.5660 0.5200 0.5430 5,425,800
0.4800 0.5000 0.4640 0.4870 9,861,800
0.4960 0.5000 0.4730 0.4780 2,511,900
0.4900 0.5030 0.4790 0.4840 2,278,700
No trading
Weekend
Weekend
0.5290 0.5360 0.4900 0.4900 3,180,800
0.5200 0.5530 0.5110 0.5290 2,765,200
0.5000 0.5460 0.4950 0.5310 3,412,900
0.5010 0.5270 0.4820 0.4830 2,876,900
0.5060 0.5380 0.4600 0.5200 5,394,200
Weekend
Weekend
11 · 10-Q After-hours · 16:01 ET 10-Q ↗
0.5800 0.5800 0.4930 0.5040 3,538,100
10 · 8-K Pre-market · 08:02 ET 8-K ↗
0.4170 0.5790 0.4150 0.5600 13,902,000
0.5430 0.5430 0.3950 0.3960 13,336,700
0.8000 0.8030 0.5100 0.5300 12,306,900
9 · 8-K After-hours · 16:03 ET 8-K ↗
0.9520 0.9930 0.9320 0.9500 1,116,600
Weekend
Weekend
0.9400 0.9600 0.9010 0.9460 905,100
1.0300 1.0300 0.9000 0.9220 1,256,900
0.8470 1.0500 0.8300 1.0400 4,184,100
0.8570 0.8590 0.8200 0.8420 749,800
0.8530 0.8600 0.8230 0.8430 756,800
Weekend
Weekend
0.8140 0.8750 0.8110 0.8340 1,569,100
0.7600 0.8130 0.7600 0.8070 752,300
0.8000 0.8020 0.7520 0.7650 1,005,000
0.7870 0.8130 0.7800 0.7940 585,700
0.7900 0.8360 0.7720 0.7910 1,155,400
Weekend
Weekend
0.7830 0.8160 0.7800 0.7850 910,200
0.8470 0.8470 0.7850 0.7920 836,700
0.8350 0.8650 0.8300 0.8440 751,300
0.8410 0.8580 0.8180 0.8240 584,500
0.8560 0.8700 0.8420 0.8530 850,400
Weekend
Weekend
0.8500 0.8700 0.8320 0.8530 700,900
0.8590 0.8700 0.8250 0.8310 613,400
0.8500 0.8720 0.8300 0.8430 1,058,500
0.8200 0.8750 0.8200 0.8410 653,600
0.8300 0.8500 0.8000 0.8100 793,200
Weekend
Weekend
0.7700 0.8480 0.7520 0.8320 980,600
0.7860 0.8000 0.7500 0.7500 1,198,100
0.8300 0.8350 0.7920 0.8000 686,100
0.8090 0.8200 0.7630 0.7950 919,600
0.8400 0.8660 0.8200 0.8240 728,800
Weekend
Weekend
No trading
0.8390 0.8700 0.8120 0.8470 703,900
0.8000 0.8650 0.7900 0.8510 1,801,800
0.7390 0.7800 0.7390 0.7800 1,034,800
0.7500 0.7550 0.7200 0.7310 1,476,300
Weekend
Weekend
0.7760 0.7930 0.7500 0.7520 1,300,600
8 · DEFA14A After-hours · 16:09 ET DEFA14A ↗ 7 · DEF 14A After-hours · 16:08 ET DEF 14A ↗
0.7800 0.8110 0.7800 0.7930 789,600
0.7960 0.8400 0.7710 0.7990 1,475,500
0.8200 0.8250 0.7800 0.7900 767,900
0.8270 0.8460 0.8000 0.8270 896,800
Weekend
Weekend
0.8250 0.8460 0.8010 0.8080 876,600
0.8170 0.8450 0.7900 0.8280 1,055,400
0.8800 0.8940 0.8140 0.8150 801,000
0.9000 0.9100 0.8700 0.8820 652,500
0.8500 0.9000 0.8410 0.8950 963,600
Weekend
Weekend
0.8800 0.8990 0.8250 0.8500 791,100
6 · PRE 14A After-hours · 16:01 ET PRE 14A ↗
0.9000 0.9100 0.8500 0.8680 1,173,700
0.9170 0.9350 0.9000 0.9220 562,900
0.9040 0.9700 0.9000 0.9360 1,124,900
0.8200 0.9040 0.8200 0.9000 1,556,200
Weekend
Weekend
0.8750 0.8880 0.8200 0.8240 1,754,800
5 · 10-K After-hours · 16:11 ET 10-K ↗ 4 · 8-K After-hours · 16:03 ET 8-K ↗
0.9450 0.9640 0.8900 0.9020 1,298,200
0.9600 0.9960 0.9200 0.9650 1,040,700
0.9500 0.9700 0.8550 0.9600 1,249,700
0.9300 0.9900 0.9250 0.9900 1,280,200
Weekend
Weekend
0.9900 1.0100 0.9410 0.9600 933,500
1.0300 1.0300 0.9650 0.9900 1,408,500
0.9800 1.0450 0.9800 1.0200 1,208,400
0.9980 1.0350 0.9600 0.9890 1,333,900
1.0500 1.1000 0.9900 1.0100 2,260,000
Weekend
Weekend
1.0500 1.0750 0.9980 1.0400 1,527,500
0.9700 1.1100 0.9640 1.0500 3,005,500
0.9710 1.0200 0.9600 0.9940 1,970,200
0.8850 1.0000 0.8740 0.9830 2,611,500
No trading
Weekend
Weekend
0.8900 0.9470 0.8700 0.8940 1,369,200
0.9100 0.9180 0.8520 0.8910 1,169,200
0.8880 0.9270 0.8200 0.9270 1,968,700
0.8840 0.9350 0.8650 0.8800 1,316,500
0.9240 0.9240 0.8360 0.9000 1,351,000
Weekend
Weekend
0.8290 0.9220 0.8160 0.8990 1,629,500
0.8600 0.9000 0.8100 0.8110 2,016,700
0.9610 1.0300 0.8700 0.8810 2,026,500
0.9740 1.0400 0.8700 0.9600 3,573,100
0.8800 1.0200 0.8700 0.9700 7,287,700
Weekend
Weekend
0.8450 0.8870 0.8200 0.8830 3,124,900
0.7500 0.8950 0.7400 0.8510 15,728,800
0.7010 0.7100 0.6700 0.6740 886,500
0.7020 0.7200 0.6900 0.7070 859,900
0.7100 0.7340 0.7000 0.7010 1,160,600
Weekend
Weekend
0.7300 0.7440 0.7150 0.7230 740,300
0.7100 0.7590 0.7010 0.7460 1,179,600
0.7020 0.7190 0.6910 0.7090 828,700
0.6900 0.7300 0.6900 0.7070 858,700
No trading
Weekend
Weekend
0.6970 0.7390 0.6970 0.7090 1,252,300
0.7000 0.7430 0.6940 0.7070 827,600
0.7000 0.7270 0.6910 0.7180 1,033,000
0.6800 0.7100 0.6630 0.7060 1,471,900
0.7090 0.7200 0.6560 0.6830 2,437,300
Weekend
Weekend
0.7210 0.7400 0.7100 0.7130 1,857,100
0.7300 0.7450 0.7170 0.7250 1,348,800
0.7220 0.7620 0.7220 0.7470 1,255,700
0.7340 0.7600 0.7110 0.7240 2,249,100
0.7500 0.7780 0.7410 0.7460 1,545,500
Weekend
Weekend
0.7830 0.8000 0.7400 0.7590 1,157,700
No trading
0.7230 0.8500 0.7200 0.7830 3,675,200
0.7200 0.7450 0.7150 0.7450 1,471,400
0.7200 0.7490 0.7100 0.7490 2,577,200
Weekend
Weekend
0.7270 0.7450 0.7050 0.7430 1,712,800
No trading
0.7100 0.7400 0.7100 0.7380 626,500
0.7150 0.7630 0.7100 0.7200 2,073,600
0.7180 0.7480 0.7050 0.7260 1,667,700
Weekend
Weekend
0.7000 0.7500 0.6910 0.7500 5,868,300
0.7100 0.7480 0.7000 0.7030 1,673,000
0.7330 0.7510 0.7030 0.7100 1,259,700
0.7160 0.7540 0.7160 0.7330 2,355,300
0.7630 0.7880 0.7260 0.7330 1,730,800
Weekend
Weekend
0.7580 0.7950 0.7580 0.7760 1,558,500
0.8100 0.8240 0.7610 0.7650 1,588,300
0.8100 0.8300 0.7820 0.8160 2,674,700
0.8000 0.8290 0.8000 0.8080 1,081,400
0.8000 0.8350 0.8000 0.8120 1,435,200
Weekend
Weekend
3 · 8-K After-hours · 16:05 ET 8-K ↗
0.8290 0.8500 0.8100 0.8240 1,484,100
0.7700 0.8600 0.7520 0.8280 3,228,300
0.7050 0.7750 0.7000 0.7710 2,324,100
0.7400 0.7470 0.7050 0.7050 2,213,200
0.7700 0.8080 0.7410 0.7410 2,464,300
Weekend
Weekend
0.7710 0.7970 0.7580 0.7810 977,600
No trading
0.7740 0.7980 0.7410 0.7650 1,777,200
0.7600 0.7890 0.7400 0.7670 2,100,900
0.6600 0.7790 0.6540 0.7780 4,015,100
Weekend
Weekend
0.6430 0.6900 0.6400 0.6650 2,839,900
0.6900 0.7200 0.6510 0.6510 4,354,500
0.7000 0.7200 0.6660 0.6750 4,583,900
0.6830 0.7190 0.6810 0.7010 4,273,700
0.7430 0.7700 0.6760 0.6800 4,286,300
Weekend
Weekend
0.6910 0.7530 0.6880 0.7530 3,498,900
0.7290 0.7440 0.7000 0.7130 5,875,900
0.7700 0.8100 0.7230 0.7230 5,416,000
0.7840 0.8000 0.7700 0.7870 2,799,800
0.8100 0.8350 0.7720 0.7900 3,861,600
Weekend
Weekend
0.7500 0.8300 0.7430 0.8170 4,505,200
2 · 10-Q After-hours · 16:17 ET 10-Q ↗ 1 · 8-K After-hours · 16:08 ET 8-K ↗
0.8100 0.8250 0.7700 0.7700 3,460,800
0.8060 0.8300 0.7900 0.8140 3,688,500
0.8400 0.8700 0.8180 0.8270 2,682,700
0.8760 0.8820 0.8230 0.8810 3,846,100
Weekend
Weekend
0.8900 0.9240 0.8660 0.8660 3,637,300
0.9550 0.9600 0.8880 0.8880 4,298,900
0.9600 1.0000 0.9510 0.9690 4,081,400
0.9850 1.0200 0.9600 0.9600 3,606,300
0.9700 1.0100 0.9690 0.9730 3,411,000
Weekend
Weekend
0.9880 0.9900 0.9440 0.9660 2,788,200

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.

20 8-K 8-K (opens SEC filing in a new tab) After-hours · 20:02 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) After market open · 11:47 ET Summarise
18 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
17 PRE 14A PRE 14A (opens SEC filing in a new tab) Pre-market · 06:52 ET Summarise
16 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:44 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:02 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
8 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
7 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
6 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
5 10-K 10-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) After-hours · 16:03 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise