aTyr Pharma, Inc ATYR

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aTyr Pharma, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 0.4730 · FX 1 USD = 1.290100 SGD · about SGD 0.6102 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 6.16 → 0.47 · -92.3%
6.1603.2780.396 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
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
18 · 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
17 · 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
16 · 10-Q After-hours · 16:01 ET 10-Q ↗
0.5800 0.5800 0.4930 0.5040 3,538,100
15 · 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
14 · 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
13 · DEFA14A After-hours · 16:09 ET DEFA14A ↗ 12 · 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
11 · 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
10 · 10-K After-hours · 16:11 ET 10-K ↗ 9 · 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
8 · 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
7 · 10-Q After-hours · 16:17 ET 10-Q ↗ 6 · 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
0.9650 0.9870 0.9410 0.9730 2,753,500
1.0200 1.0500 0.9530 0.9660 7,983,500
1.0100 1.0650 0.9950 1.0300 7,040,800
1.0300 1.0400 0.9800 1.0200 6,405,300
Weekend
Weekend
0.9900 1.0400 0.9600 1.0200 6,396,100
0.9950 1.1000 0.9950 1.0000 9,344,300
1.0400 1.0800 1.0000 1.0200 5,496,300
0.9240 1.0600 0.9000 1.0400 8,286,700
1.0650 1.0800 0.9500 0.9660 9,581,400
Weekend
Weekend
1.0700 1.1200 1.0100 1.0600 21,621,400
0.9900 1.0200 0.9270 0.9530 10,278,800
0.8370 1.0000 0.8100 1.0000 11,937,700
0.8200 0.8470 0.8000 0.8360 5,655,900
0.8000 0.8600 0.7900 0.8250 10,686,900
Weekend
Weekend
0.7080 0.7900 0.7080 0.7750 10,694,100
0.6970 0.7290 0.6900 0.7100 10,576,500
0.7100 0.7400 0.6820 0.6900 13,556,800
0.8250 0.8330 0.7000 0.7210 23,582,100
0.8210 0.8370 0.7700 0.7950 13,788,700
Weekend
Weekend
0.8720 0.9000 0.8020 0.8410 16,689,700
0.9340 0.9600 0.8700 0.8930 14,146,300
0.9890 0.9950 0.9510 0.9510 12,251,500
1.0400 1.0500 0.9800 0.9900 9,457,200
0.9600 1.0500 0.9590 1.0500 21,352,800
Weekend
Weekend
1.0400 1.0700 0.9450 0.9920 26,939,000
1.0200 1.0800 1.0000 1.0500 15,912,300
1.0700 1.0800 0.9690 1.0250 32,060,300
1.0800 1.2000 1.0600 1.0800 46,375,600
1.2600 1.3700 1.0000 1.0150 155,055,000
5 · 8-K Pre-market · 08:30 ET 8-K ↗
Weekend
Weekend
5.2700 6.5000 5.2200 6.0300 16,838,100
5.2000 5.5850 5.1850 5.2600 4,768,400
5.3150 5.4350 5.0800 5.2400 4,079,400
5.4500 5.6000 5.1700 5.3100 4,935,900
5.6000 5.7700 5.3200 5.4600 4,301,600
Weekend
Weekend
5.5400 5.6300 5.2700 5.6100 3,973,700
5.6300 5.8200 5.2300 5.4700 4,952,300
5.6400 5.9000 5.4200 5.7100 4,979,100
5.4400 6.0800 5.4400 5.6500 8,165,200
No trading
Weekend
Weekend
5.4800 5.7200 5.1650 5.3800 4,681,000
5.2200 5.4000 5.1750 5.3500 2,800,700
5.1500 5.3520 5.1200 5.1700 2,462,100
5.1200 5.1950 5.0300 5.1400 2,111,500
5.3750 5.5200 5.0700 5.1600 4,090,600
Weekend
Weekend
5.1100 5.4550 5.0500 5.3500 6,047,000
4.9000 4.9900 4.8200 4.9500 2,610,700
4.6400 4.9700 4.5800 4.9200 3,395,700
4.8500 4.9900 4.6400 4.6600 4,744,900
4.9250 5.0270 4.8100 4.9100 4,010,400
Weekend
Weekend
4.9500 4.9700 4.7100 4.9000 4,270,700
5.0900 5.1400 4.8400 4.9900 3,787,500
5.2000 5.3300 5.0400 5.1500 3,267,700
5.6250 5.6900 5.1400 5.2300 5,078,600
5.3750 5.7450 5.3100 5.6100 4,693,300
Weekend
Weekend
5.2400 5.3950 5.2000 5.3000 3,251,500
4 · 8-K/A Next filing day · accepted 07 Aug, 21:33 ET 8-K/A ↗ 3 · S-3 After-hours · 16:19 ET S-3 ↗ 2 · 10-Q After-hours · 16:07 ET 10-Q ↗ 1 · 8-K After-hours · 16:03 ET 8-K ↗
5.4300 5.7400 5.1700 5.2400 4,011,200
5.1700 5.3850 5.0800 5.3400 3,530,000
4.9950 5.2600 4.9550 5.2200 3,350,700
4.8200 5.0950 4.7540 5.0200 4,145,500
Weekend
Weekend
4.5100 4.7550 4.4650 4.7000 4,265,200
4.9000 4.9800 4.6500 4.7200 5,082,700
5.2500 5.2700 4.8500 4.9400 6,797,600
6.2050 6.2100 5.1800 5.2450 12,839,900
6.0400 7.2900 6.0000 6.1600 12,303,000
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.

18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
16 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:02 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
13 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
12 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
11 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
7 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
4 8-K/A 8-K/A (opens SEC filing in a new tab) Next filing day · accepted 07 Aug, 21:33 ET Summarise
3 S-3 S-3 (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise