Protagonist Therapeutics, Inc PTGX

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Protagonist Therapeutics, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 136.1100 · FX 1 USD = 1.288650 SGD · about SGD 175.3982 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 56.26 → 136.11 · 141.9%
140.91095.93550.960 1,2,3 4,5 6 7,8 9,10 11,12 13 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
136.1100 137.2000 133.7800 136.1100 298,400
133.7900 137.3250 132.0000 135.4300 605,800
139.4500 139.4500 134.4200 135.4400 710,400
133.3400 139.7200 131.0500 138.3100 580,500
141.7900 143.2900 133.6400 134.2700 762,600
Weekend
Weekend
131.3700 141.0800 131.3700 140.9100 519,100
135.2100 136.5550 131.3500 132.0200 602,100
128.0000 139.2200 126.9700 135.4600 836,100
131.8900 131.9500 128.6800 131.2700 565,000
130.0500 131.3600 125.3230 129.8900 541,000
Weekend
Weekend
137.1200 137.1200 130.6400 131.4200 1,060,800
139.2600 141.1000 136.9850 137.6400 1,613,300
139.5000 140.9500 136.0800 140.0700 931,400
132.5900 141.0800 130.6900 140.8500 1,374,300
131.2500 132.7850 128.1500 131.5000 639,800
Weekend
Weekend
No trading
125.8900 131.8700 125.2400 131.6200 708,400
122.9600 126.0400 122.4800 125.1700 521,800
122.0400 124.7150 119.5700 122.5800 560,900
121.3400 126.5900 118.2700 121.6300 741,000
Weekend
Weekend
122.0000 123.4300 118.3100 121.8800 2,593,900
122.3100 126.2500 121.4800 122.6300 1,048,000
119.3800 124.8000 118.8050 122.1500 1,132,400
114.6600 119.8500 114.5600 118.9600 700,500
113.2400 116.5700 113.2400 115.0300 1,193,500
Weekend
Weekend
No trading
13 · 8-K After-hours · 16:30 ET FORM 8-K ↗
112.8800 114.4850 111.1700 112.8600 1,533,700
110.8400 113.4700 110.1100 111.4400 742,500
112.8300 113.6600 108.5300 110.6400 504,800
109.1000 112.7700 109.1000 112.4600 536,300
Weekend
Weekend
109.8500 111.7750 109.6000 109.7800 448,900
106.2800 110.8200 106.2800 109.7900 564,100
105.5000 111.4500 104.8900 105.7700 770,500
99.7600 106.4800 98.0800 105.8700 878,600
98.9500 101.1600 96.7000 98.0300 567,700
Weekend
Weekend
103.1400 103.2900 96.3800 97.3800 887,400
96.3900 103.5450 96.1400 102.7900 658,800
93.9300 95.6100 93.0000 95.4100 579,200
93.8400 97.7100 92.7500 93.2300 723,600
97.8800 98.5000 93.5000 94.9200 816,600
Weekend
Weekend
100.6400 102.4000 98.8400 99.5600 597,800
102.7400 103.7100 99.4250 100.4100 551,500
100.0500 102.4900 98.9400 102.2100 404,800
100.0300 100.8000 97.9260 99.9800 360,700
No trading
Weekend
Weekend
102.0100 102.4150 98.8900 99.1900 393,900
101.1300 103.4300 98.6010 102.0100 402,900
99.0300 101.9000 98.3700 100.8800 371,700
100.2500 100.2600 96.6920 98.3700 492,700
103.2200 104.1600 100.5800 100.7400 447,200
Weekend
Weekend
104.2200 104.3900 101.7200 102.1800 560,800
104.3100 105.7200 101.6200 105.5500 426,500
99.5800 104.1950 98.2200 103.8800 518,200
103.5000 103.6600 98.3600 99.9500 645,700
100.1400 105.3250 99.9400 103.5000 572,000
Weekend
Weekend
98.5100 100.1500 97.0000 99.3600 505,000
103.5500 104.6800 98.5300 98.8500 836,900
103.0000 105.0250 98.9500 103.9700 989,900
12 · 10-Q After-hours · 16:27 ET 10-Q ↗ 11 · 8-K After-hours · 16:08 ET FORM 8-K ↗
100.3200 101.3700 97.4500 99.2100 398,000
98.0000 101.0800 98.0000 99.5200 457,400
Weekend
Weekend
99.1600 99.4650 97.0800 98.3700 447,700
99.0000 99.7550 97.2000 98.9700 577,600
100.2700 100.3500 98.1100 98.5200 576,700
10 · DEFA14A After-hours · 16:50 ET DEFA14A ↗ 9 · DEF 14A After-hours · 16:44 ET FORM- DEF 14A ↗
99.5000 102.4650 97.7900 101.2100 663,200
100.4400 103.4200 98.3100 98.5100 994,900
Weekend
Weekend
102.5400 105.9430 98.9050 100.0000 778,700
106.3400 106.9800 102.2600 102.6200 651,600
106.4300 107.0000 103.9300 105.5500 345,900
104.9400 106.4500 103.6400 105.8900 494,900
105.4650 106.4600 104.0000 105.4700 540,500
Weekend
Weekend
105.5700 106.9030 103.5100 105.9800 1,006,300
103.5900 104.5300 102.4550 103.7300 417,800
105.9600 106.6600 103.0200 105.4400 770,200
97.5800 104.9700 97.5800 104.7200 849,500
98.6100 101.0400 95.4000 97.5700 1,088,600
Weekend
Weekend
104.2800 104.2800 98.4000 98.8200 577,300
101.4500 105.1050 101.4500 104.0850 699,500
104.2800 105.8800 101.6150 102.0900 819,200
103.4300 103.9600 101.3100 103.7500 785,300
103.7200 104.4600 101.8350 102.8900 528,500
Weekend
Weekend
No trading
101.5900 104.3100 101.5900 103.7800 601,600
105.5100 107.8400 102.7000 103.6700 583,900
101.2300 105.9900 101.0600 105.4000 944,700
99.0400 102.7600 98.0800 99.8700 884,400
Weekend
Weekend
101.2700 101.9200 97.8850 98.9700 785,500
103.2500 105.6900 102.0100 102.1700 1,045,300
99.4200 105.0000 97.1600 104.3100 812,200
97.1600 100.9800 97.1600 100.3900 940,200
100.0000 102.0600 98.1500 98.5400 925,400
Weekend
Weekend
101.4700 101.8000 97.8300 98.8700 2,029,200
98.4500 105.6900 98.3450 101.6800 1,919,700
97.0400 99.5000 90.5800 97.0900 1,981,500
96.7000 99.3100 96.4250 97.2300 799,200
93.2800 97.0770 92.6050 96.7500 695,800
Weekend
Weekend
96.9100 98.3000 90.9200 92.3600 896,000
95.0100 96.3900 93.6710 95.4200 750,600
96.8400 98.3200 95.9700 96.4800 788,700
96.0200 98.2100 95.4000 97.0500 856,000
91.1400 97.5350 91.1400 96.6600 726,800
Weekend
Weekend
89.9600 92.9720 87.8200 92.0900 572,400
94.5400 94.5400 90.3500 91.4100 677,500
91.9400 95.4300 91.0300 94.8300 782,700
92.5600 93.5100 90.0200 91.3000 529,500
92.0800 94.8900 90.9850 94.2400 942,700
Weekend
Weekend
88.1800 92.2300 87.1500 92.0800 937,000
87.5000 88.8250 85.6000 88.3900 706,000
8 · 10-K After-hours · 16:28 ET 10-K ↗ 7 · 8-K After-hours · 16:08 ET FORM 8-K ↗
87.5000 88.4600 86.2550 87.1000 285,800
86.7200 89.5900 86.0000 87.3900 668,500
82.3200 86.8450 77.0000 86.5900 710,800
Weekend
Weekend
83.2600 83.6850 80.7200 82.7600 578,000
81.8800 83.2200 80.5900 83.0900 384,600
81.5900 83.3950 81.5900 82.9900 407,900
81.0700 83.1300 80.3950 82.4600 364,700
No trading
Weekend
Weekend
81.9900 84.0550 80.5900 81.4900 428,900
84.0700 84.7200 81.5600 81.9300 352,500
83.4600 84.8200 80.9900 83.4900 350,200
83.0000 84.9000 82.6450 83.8800 442,600
83.4700 83.9000 82.2100 83.3200 322,000
Weekend
Weekend
82.1100 85.0500 81.5500 84.4900 812,800
83.6200 85.4300 80.2030 80.6700 457,100
85.5900 85.6000 81.0000 83.3000 1,077,500
83.0900 86.0950 82.8800 85.5900 769,400
81.8000 84.5500 81.1400 83.0500 1,414,700
Weekend
Weekend
79.7700 82.5600 78.7450 81.8000 1,174,000
81.3900 82.4900 77.6950 79.7300 952,700
82.4500 83.6900 80.0000 81.7600 777,200
82.0000 83.8700 82.0000 83.0800 507,800
82.5300 84.3150 81.9430 82.3000 529,200
Weekend
Weekend
84.6200 85.5000 82.6650 83.1000 569,300
82.8300 85.2000 80.6500 84.7900 609,100
82.5100 83.9600 80.2700 83.8900 1,086,100
81.1600 83.6300 79.8700 83.4200 901,300
No trading
Weekend
Weekend
84.5100 84.6700 81.4700 81.9900 664,700
84.6000 87.4400 84.3300 84.7500 839,300
80.8500 85.3000 80.4700 85.2300 1,052,600
79.8800 82.7400 79.6400 81.3600 799,000
79.4900 81.0900 78.7500 80.2500 739,800
6 · 8-K Pre-market · 08:00 ET FORM 8-K ↗
Weekend
Weekend
80.2000 81.4000 79.3800 80.2200 983,300
81.0500 82.1400 79.2200 80.2000 1,487,700
82.2500 82.6900 79.1800 82.3400 1,220,400
83.2500 85.0000 81.6700 82.2700 731,000
87.5300 87.5300 82.9200 84.1800 1,028,100
Weekend
Weekend
86.5400 88.1550 85.1900 87.1800 751,700
No trading
87.3200 88.2300 85.9800 87.3400 615,700
87.9400 88.3150 86.1200 87.2600 344,000
88.6600 89.1000 87.3000 87.9300 373,100
Weekend
Weekend
88.7800 89.6100 87.4700 88.7800 390,100
No trading
88.5300 89.4700 87.4700 88.8400 154,100
87.2700 90.0000 87.2700 88.7300 329,100
85.3300 88.1300 84.8800 87.4100 661,100
Weekend
Weekend
86.5800 87.7300 84.8100 86.0500 1,736,500
89.3500 90.0150 84.1100 85.7900 2,227,500
91.4100 92.5400 88.3800 89.3400 821,600
93.9300 94.5400 90.1800 91.5400 881,100
95.4100 96.5400 94.1700 94.7900 960,000
Weekend
Weekend
92.7200 95.3900 91.7000 95.3500 1,286,800
92.0100 93.0700 91.0700 92.2500 800,700
88.5600 91.9600 88.3400 91.3800 1,308,400
89.7300 92.8000 88.3000 88.5600 1,440,000
90.9400 91.8900 89.5100 90.2500 1,455,800
Weekend
Weekend
87.9600 90.1800 87.5400 89.6500 1,473,100
86.0700 88.1000 85.1300 87.3300 736,800
85.4300 87.1000 84.7300 86.0700 715,200
85.7500 86.3900 83.5200 84.6500 992,800
89.6100 89.8500 85.0000 85.6400 999,700
Weekend
Weekend
90.0000 90.4600 88.7800 90.0000 337,400
No trading
90.0000 90.8500 89.5000 90.0700 1,205,200
88.4600 89.8800 87.7600 89.8600 910,900
86.5900 88.3350 85.7100 87.6900 872,400
Weekend
Weekend
84.2400 86.6700 83.6390 85.4000 907,100
86.3600 86.9500 83.9950 84.2000 789,500
84.5400 86.6450 84.4500 85.1300 989,300
84.7700 86.3600 83.7900 84.3900 778,800
82.7900 85.4500 82.7900 84.7700 794,800
Weekend
Weekend
82.1800 85.9000 82.0600 84.6100 755,300
84.8400 86.0200 83.1700 83.2400 711,800
85.4100 86.9000 84.5000 84.8500 1,361,100
83.5200 86.0000 83.0000 85.5600 952,400
80.5800 84.8400 79.5600 83.2300 1,161,400
Weekend
Weekend
80.1200 80.7500 76.7000 79.5400 882,300
5 · 10-Q After-hours · 16:52 ET 10-Q ↗ 4 · 8-K After-hours · 16:19 ET FORM 8-K ↗
77.0700 79.9200 77.0000 79.7800 1,139,600
76.5000 78.1200 75.5500 77.8800 622,900
75.4400 78.0100 75.4400 76.5000 1,029,000
78.6200 80.4300 75.5350 75.9500 1,041,500
Weekend
Weekend
77.5300 79.0100 76.6600 78.6200 725,800
77.2100 78.7400 76.7500 77.8500 839,200
78.0600 79.0000 76.4850 76.6900 921,200
75.0600 78.7800 74.8000 78.5100 1,246,000
75.1300 76.0750 74.0250 75.2500 938,400
Weekend
Weekend
74.1300 75.5250 73.8350 74.8600 690,700
73.3700 74.9100 73.0800 73.9850 722,500
74.5100 74.9500 73.2900 73.5000 885,800
76.5100 77.2200 74.7800 75.0000 929,900
77.5100 77.6600 75.5100 76.7200 780,600
Weekend
Weekend
75.6000 77.5800 75.1700 77.5000 1,240,900
77.8100 78.0000 74.6200 75.7300 1,931,600
75.2900 78.1500 75.2900 77.6800 1,149,600
78.4900 78.4900 76.0000 76.9400 1,885,900
85.2800 86.7600 75.0400 79.1700 5,941,400
Weekend
Weekend
67.3900 93.2500 65.7500 87.0000 7,065,300
65.5600 67.5700 65.5600 67.0400 1,058,900
65.2800 65.7700 64.5000 65.3000 587,500
64.2600 65.8400 62.2400 65.4700 804,400
65.0200 66.8700 63.9300 64.1400 886,200
Weekend
Weekend
64.5900 65.3800 64.5600 64.8300 623,600
64.3900 65.5000 63.7100 64.9800 575,500
66.0000 66.5300 63.7100 64.0000 1,048,500
65.1400 67.0400 65.0600 66.4300 1,446,200
67.4200 68.1700 63.8200 65.1400 2,017,900
Weekend
Weekend
65.4000 68.2600 64.0200 67.4200 1,424,200
65.4200 66.3800 64.3400 64.7000 806,400
65.0000 66.7000 63.8300 65.9500 857,000
64.0000 65.0750 63.7400 65.0600 568,700
62.3500 64.5900 61.9500 64.5100 702,600
Weekend
Weekend
62.2200 63.3000 61.6350 62.2000 2,461,700
59.5500 62.2100 58.9100 62.1400 1,358,100
60.0500 61.3350 59.0200 59.2200 912,800
58.1600 59.1400 57.9000 58.5900 633,900
58.8600 59.6400 57.9100 58.3800 929,200
Weekend
Weekend
60.4000 60.4000 58.7500 58.8600 685,800
57.8100 59.7100 57.5250 59.6800 939,400
58.4700 58.4700 57.1300 57.7400 843,200
56.5000 59.3100 54.5000 58.3600 1,483,300
59.5000 59.5000 54.6000 56.1900 1,643,300
Weekend
Weekend
59.3400 61.0400 58.0300 60.5300 1,926,600
58.2200 60.7100 57.4500 59.6000 1,473,800
58.2500 59.5050 57.4900 58.1100 1,018,800
59.4000 59.7500 58.2700 58.8500 665,800
No trading
Weekend
Weekend
58.5000 59.2750 57.6550 59.0500 792,300
61.4600 61.8900 58.0700 58.1400 1,003,800
56.7100 61.5000 56.7100 61.4300 1,426,800
57.2800 57.5030 56.5800 56.9900 516,400
57.4800 58.7900 56.5600 56.8800 545,000
Weekend
Weekend
56.5200 57.7200 56.0950 57.4800 470,100
55.5400 56.4700 55.2550 56.0400 500,900
56.2400 57.1000 55.2650 56.2300 675,200
56.0000 56.5600 55.2600 56.2500 528,400
56.0400 57.9900 55.5100 56.2100 470,800
Weekend
Weekend
55.0100 56.3250 54.1800 56.0700 471,900
56.2000 56.5800 54.9600 54.9900 629,400
55.1000 56.8500 54.5700 56.7200 999,400
54.0700 54.7400 53.4900 54.5300 541,700
51.0500 53.8000 50.5800 53.7500 866,500
Weekend
Weekend
50.9400 51.4130 50.4850 51.0700 719,200
54.1200 54.8100 50.7600 50.9600 901,700
3 · 10-Q After-hours · 16:22 ET 10-Q ↗ 2 · S-3ASR After-hours · 16:46 ET S-3ASR ↗ 1 · 8-K After-hours · 16:12 ET FORM 8-K ↗
53.4200 54.3700 52.1100 53.8650 449,100
53.5700 54.3280 52.0300 53.9000 460,700
53.3800 54.1700 52.1800 53.8300 374,000
Weekend
Weekend
54.0100 55.4900 53.6000 53.8300 600,800
54.1400 55.2900 53.6900 53.8600 561,100
55.7300 56.3100 54.0700 54.6200 388,800
56.9900 57.1450 54.5300 55.0100 802,700
55.6100 57.1000 55.2050 56.2600 681,200
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.

13 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:27 ET Summarise
11 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
10 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:50 ET Summarise
9 DEF 14A FORM- DEF 14A (opens SEC filing in a new tab) After-hours · 16:44 ET Summarise
8 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:28 ET Summarise
7 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
6 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
5 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
2 S-3ASR S-3ASR (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise