Septerna, Inc SEPN

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

Paper trade (simulated — no real money)

Fill: USD 40.4100 · FX 1 USD = 1.277900 SGD · about SGD 51.6399 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 21.67 → 40.41 · 86.5%
48.19033.14518.100 1,2 3 4 5 6,7 8 9 10,11 12,13 14 15,16 17 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
40.6300 41.2100 39.7700 40.4100 200,306
40.7200 41.7700 39.7000 40.8800 251,100
39.5700 41.4000 38.7500 40.7600 286,400
36.4600 39.5500 36.2500 39.3500 418,300
36.4800 37.8200 36.0350 36.3800 410,200
Weekend
Weekend
37.4700 37.4700 35.0900 36.3500 234,100
36.7800 38.3600 36.2200 37.4500 271,400
36.0000 37.2750 34.3600 36.3200 370,000
37.4900 38.5100 36.2750 36.4150 491,900
38.3200 38.4100 37.2500 37.5600 207,600
Weekend
Weekend
36.7600 38.7300 35.7650 38.3700 349,400
35.4700 37.0900 34.6630 36.9000 745,400
35.2700 37.1400 35.2000 36.0000 1,028,400
37.9700 38.6900 35.6000 35.6700 490,400
37.8300 38.5200 36.8200 37.8700 266,700
Weekend
Weekend
38.8400 39.1050 37.3060 37.7100 395,400
38.9000 39.5200 37.8100 38.0500 545,100
39.1300 39.8500 38.4900 39.1300 209,600
39.5200 39.5650 38.3700 39.1300 564,500
37.6100 39.7800 37.0300 39.7400 338,300
Weekend
Weekend
38.3400 38.3400 37.3500 37.7700 344,300
38.4100 38.8050 37.4900 38.1300 293,000
40.1700 40.1700 36.9800 38.4500 509,700
38.7800 41.0900 38.7400 40.3800 412,000
38.9700 39.4700 38.0100 38.5400 252,400
Weekend
Weekend
39.2800 39.4800 37.8810 38.6900 448,200
39.3800 40.5200 39.0050 39.5000 256,800
39.1500 40.2400 37.9180 38.4400 304,900
39.5200 39.5200 38.2630 38.8600 269,600
38.6600 39.9500 38.5100 39.5500 356,000
Weekend
Weekend
37.7500 40.0200 37.5600 38.5100 354,300
37.3700 38.4300 36.6000 37.7500 338,700
37.1500 39.4000 37.1500 37.9700 475,300
36.1500 38.0600 36.0100 37.3700 309,900
No trading
Weekend
Weekend
36.5700 37.5900 36.5700 36.7500 199,700
37.7200 38.1950 36.4600 36.8000 241,500
37.9600 38.8600 37.2450 37.5000 263,200
38.1500 38.5700 37.2400 37.6800 264,000
38.7100 39.1050 37.3900 38.1500 415,300
Weekend
Weekend
40.2500 40.9450 38.7400 38.9100 385,900
40.0100 41.0800 39.9500 40.4700 266,500
41.0800 41.3550 40.1200 40.2500 168,500
41.5700 41.8500 40.4700 41.3000 333,400
17 · 8-K Pre-market · 08:15 ET 8-K ↗
39.7600 40.9000 38.9600 40.5200 520,500
Weekend
Weekend
41.4400 41.4400 39.9500 40.0000 289,800
43.1500 43.6190 40.2400 40.7900 429,900
44.6500 44.9300 43.4900 43.9300 383,500
43.6900 44.5800 43.3700 43.8000 332,900
44.0100 45.4100 43.6900 44.2000 433,700
Weekend
Weekend
45.0000 46.5000 43.6400 44.5000 630,400
47.8300 48.9500 45.1000 45.1400 877,600
47.9300 51.1000 47.4000 48.1900 1,261,200
39.5700 48.0000 38.6200 47.7600 1,159,300
16 · 10-Q After-hours · 16:06 ET 10-Q ↗ 15 · 8-K After-hours · 16:03 ET 8-K ↗
38.5600 39.7100 38.0500 38.8500 275,400
Weekend
Weekend
39.9800 40.6500 38.1100 38.8300 303,700
39.0000 40.1220 38.7800 39.5300 193,700
38.9200 40.6300 38.4600 38.7600 442,900
35.5500 39.1200 35.5500 38.9800 398,900
34.4500 35.2500 33.1900 34.9800 201,800
Weekend
Weekend
34.9700 35.4850 33.4900 34.4500 241,100
34.0000 35.8200 34.0000 35.1800 264,500
33.9700 34.5800 33.2500 33.6100 158,200
33.7700 35.1100 32.8450 33.9700 263,400
33.2500 34.4000 33.0300 33.4900 143,900
Weekend
Weekend
33.8800 34.9680 32.4750 33.1000 242,000
33.3200 34.5000 32.9550 33.4700 298,200
33.3200 34.5100 32.7400 34.2000 264,100
32.2000 35.1100 31.8500 33.6800 215,400
33.3500 34.2800 32.1700 32.2100 197,200
Weekend
Weekend
30.9800 34.2850 30.5500 33.4000 306,400
33.9900 34.3200 31.4400 31.5600 416,700
34.5000 35.2600 32.3300 34.0700 373,700
34.2700 35.3700 33.5400 34.5400 650,800
35.6400 36.0100 33.9110 34.3600 394,100
Weekend
Weekend
37.9700 37.9700 35.4300 35.9300 378,200
36.4300 38.0400 36.0700 37.8400 969,300
35.3700 37.2600 34.7500 36.4000 945,200
34.4600 37.7500 34.4300 35.8300 843,500
33.3800 34.3000 32.9100 33.4700 469,400
Weekend
Weekend
No trading
34.6800 34.8500 33.2500 34.0000 475,800
33.4500 35.1700 33.0200 34.6100 440,400
14 · 8-K After-hours · 16:30 ET 8-K ↗
34.6900 34.7800 32.6500 33.4900 747,600
35.1800 35.9900 32.0000 34.7500 1,432,600
Weekend
Weekend
34.4400 37.4800 34.2300 37.3400 1,480,100
36.3600 36.4000 34.3520 34.5400 324,500
36.9000 37.9900 35.6100 36.0500 357,600
34.6700 37.5000 34.2800 36.5700 312,500
36.4600 37.2400 34.6800 34.8500 507,400
Weekend
Weekend
No trading
36.2400 37.3200 34.5050 36.1700 283,300
35.1700 36.1200 33.8800 35.8000 325,100
35.9300 36.6200 35.0600 35.1700 284,000
36.2700 37.0100 35.3700 36.0300 287,800
Weekend
Weekend
34.0300 36.2600 33.8500 35.9500 475,900
30.8600 34.1850 30.7390 34.0300 513,300
31.0000 31.9800 30.4100 30.4700 171,900
30.6900 31.9000 30.2350 31.0100 277,800
31.9700 32.3790 30.0500 30.4100 327,300
Weekend
Weekend
30.9900 31.4100 30.4700 31.1500 211,700
30.6100 31.7900 30.6100 31.3700 290,700
29.8900 30.8400 29.5700 30.5500 286,600
29.5600 30.2800 29.1200 29.9400 603,600
29.5900 30.3600 27.0750 29.9800 359,300
Weekend
Weekend
30.9600 31.6000 29.7100 30.2000 270,500
29.7100 31.4000 29.2200 31.0500 219,100
30.6100 30.9500 29.3150 29.7900 178,700
28.4900 30.7800 27.6640 30.6450 347,400
No trading
Weekend
Weekend
27.9300 29.8850 27.9300 28.3600 347,200
27.6200 28.5950 27.4900 27.9200 232,400
26.7700 28.0550 26.7100 28.0100 226,700
26.2100 27.1600 25.7900 26.5100 366,800
27.0800 27.9750 26.0000 26.3000 316,900
Weekend
Weekend
27.6200 28.8050 26.2800 26.9500 573,800
24.8400 28.3650 24.0300 28.3200 556,000
24.5000 25.4820 24.2300 24.7500 315,700
24.4600 25.9900 23.5650 24.8400 407,800
13 · 10-Q After-hours · 16:08 ET 10-Q ↗ 12 · 8-K After-hours · 16:05 ET 8-K ↗
23.8700 24.6500 23.5000 23.5700 132,900
Weekend
Weekend
23.9800 24.8600 23.8200 23.8700 208,400
24.7700 25.0450 23.4400 23.9800 218,300
24.2500 24.9000 23.9000 24.7100 308,500
25.0000 25.2500 23.2900 24.1300 298,700
23.5200 25.2000 23.5200 24.8200 359,600
Weekend
Weekend
23.8400 24.5850 23.1500 23.6100 201,600
11 · DEFA14A After-hours · 16:22 ET DEFA14A ↗ 10 · DEF 14A After-hours · 16:21 ET DEF 14A ↗
23.4500 24.2380 23.1150 23.7600 271,700
24.0000 24.5650 22.7800 23.4500 347,600
25.0900 25.5050 23.9500 24.2900 280,200
24.6000 25.8550 24.5800 25.0900 370,800
Weekend
Weekend
24.8600 25.4000 24.4900 24.6700 595,400
25.8200 27.1700 24.9400 24.9700 347,300
25.9500 26.2000 25.3400 25.8600 255,600
27.0000 27.2960 25.5250 25.8000 363,400
25.9500 27.0750 25.5900 26.8600 654,600
Weekend
Weekend
25.5000 26.5700 24.8400 26.1300 391,400
25.9200 26.8500 24.9800 24.9900 352,200
24.1300 25.9900 23.3100 25.9300 816,100
23.5700 24.4000 23.3500 24.1300 213,400
23.0000 24.3300 22.8300 23.3400 218,200
9 · 8-K Pre-market · 08:30 ET 8-K ↗
Weekend
Weekend
24.9200 24.9200 22.9700 23.0900 629,100
24.4000 25.2150 24.1800 24.8300 220,900
25.7100 25.8300 24.2200 24.4900 162,400
24.6700 24.8900 24.0500 24.8400 189,600
24.8800 25.4800 24.3800 24.7800 140,200
Weekend
Weekend
No trading
23.9000 25.2900 23.9000 25.1800 288,100
24.3300 24.9400 24.1800 24.3700 210,200
23.7400 24.8600 23.5000 24.0300 257,800
23.9500 24.1700 22.8900 23.3000 223,400
Weekend
Weekend
24.6800 25.1600 23.7500 23.8700 145,400
23.9800 25.0000 23.4000 24.7400 238,800
23.6900 25.0750 23.5000 24.2100 134,200
23.7700 23.9150 22.9700 23.4400 164,500
24.6300 25.3300 23.5700 23.7800 288,200
Weekend
Weekend
24.2600 24.5100 23.8200 24.1800 489,800
23.8300 24.5700 23.3500 24.2800 282,800
25.1000 25.3500 24.0400 24.1100 232,100
25.1500 25.7200 24.1400 25.1700 212,200
25.4300 27.0000 24.7500 25.1400 353,100
Weekend
Weekend
26.4900 27.0200 24.9600 25.1400 282,900
25.8600 26.7300 25.2500 26.4450 249,500
27.4500 28.0000 26.2900 26.3100 308,400
8 · S-3ASR After-hours · 16:31 ET S-3ASR ↗
29.4000 29.8220 27.2210 28.0200 245,400
7 · 10-K After-hours · 16:11 ET 10-K ↗ 6 · 8-K After-hours · 16:08 ET 8-K ↗
28.7900 30.0000 28.2500 29.0600 556,500
Weekend
Weekend
27.0500 28.8900 26.6200 28.7800 302,200
28.2600 28.2600 25.9750 27.4700 494,900
28.6000 29.0250 27.5000 28.8250 200,300
28.5100 28.6400 27.1600 28.1300 223,300
28.1100 29.5000 26.5800 28.6400 514,800
5 · 8-K Pre-market · 07:00 ET 8-K ↗
Weekend
Weekend
29.7900 30.3300 28.4400 29.0200 412,100
30.0000 30.7000 29.2900 30.2800 253,600
31.0900 32.6300 29.7900 29.9900 477,500
28.2200 30.9200 28.0700 30.8600 343,000
27.3000 28.1700 26.8350 28.0000 263,600
Weekend
Weekend
26.8500 27.4000 25.4900 27.2800 293,600
28.1700 28.1700 26.2600 27.0800 458,800
30.0800 30.5150 27.9600 28.3000 364,600
27.6000 31.3700 27.6000 30.3000 417,500
No trading
Weekend
Weekend
25.7000 27.6400 25.1200 27.5000 348,900
26.7000 26.7000 25.2200 25.7600 171,000
26.9700 26.9700 25.3600 26.3400 233,600
26.5400 27.3100 26.1000 26.7000 173,000
25.4700 26.9600 24.9800 26.5900 365,200
Weekend
Weekend
24.7300 25.7600 24.1300 25.4100 280,100
24.4800 25.5400 24.0000 24.4400 385,700
25.7600 25.9200 24.7500 24.9300 226,500
24.9500 25.7100 24.9500 25.5400 194,800
23.3400 25.8100 23.0200 25.0300 487,900
Weekend
Weekend
23.4000 23.9400 23.2300 23.3400 282,400
23.9600 24.8050 23.6650 23.8000 286,500
25.3600 25.6300 23.4500 23.6600 325,700
25.9800 26.5200 25.2000 25.4500 347,400
25.7200 26.6000 25.3450 25.9700 180,200
Weekend
Weekend
26.6400 26.8150 25.3500 25.7650 190,700
26.4100 27.5300 26.3100 26.6700 258,100
26.9700 27.3950 26.0100 26.3500 190,200
26.3700 27.9450 26.1700 27.0300 164,900
No trading
Weekend
Weekend
27.3900 28.1500 25.9900 26.0700 344,100
26.8600 27.8300 26.2650 27.3800 235,200
26.2400 27.7600 25.9200 26.7300 173,400
24.8400 26.7300 24.4400 26.3800 221,000
25.4900 25.5400 24.6600 24.8800 1,075,900
4 · 8-K Pre-market · 08:30 ET 8-K ↗
Weekend
Weekend
25.7400 26.7100 25.2500 25.3000 235,200
3 · 8-K After-hours · 16:31 ET 8-K ↗
26.1100 26.2750 25.3750 25.7400 177,400
25.6000 26.7500 25.4950 26.4100 304,900
26.7900 27.0880 25.2400 25.4500 316,500
28.4700 28.4700 26.2000 26.7900 230,700
Weekend
Weekend
28.2000 29.0000 27.7200 27.9800 255,600
No trading
27.6200 28.3200 27.5000 27.8800 168,900
28.4400 28.4950 27.5050 27.7800 143,400
28.3100 29.2300 28.3100 28.3800 126,000
Weekend
Weekend
29.0000 29.0600 28.1000 28.6200 118,200
No trading
28.3400 29.6550 28.2580 29.4700 114,000
29.0000 29.5000 27.9250 28.2300 264,000
29.6500 29.8800 28.6100 29.4700 189,600
Weekend
Weekend
28.5400 30.5000 28.5000 29.5800 915,700
26.9500 28.1230 26.3200 27.5400 301,800
26.3300 26.7600 25.4000 26.5500 287,700
26.9400 28.4300 26.1900 26.2300 253,500
25.7000 27.7800 25.7000 27.1800 340,900
Weekend
Weekend
26.4700 26.4900 25.3500 25.4400 164,900
25.6000 26.7000 24.7690 26.2100 219,500
25.5600 26.0100 24.6300 25.6400 346,700
25.9600 26.4000 25.2400 25.4900 182,500
27.1400 27.4900 25.8300 25.9600 423,900
Weekend
Weekend
26.4300 26.8700 25.7100 26.7600 346,900
26.4000 26.8000 25.7400 26.1600 177,900
26.1200 26.6500 25.4600 26.5500 290,300
27.7100 27.9800 26.1200 26.1700 282,200
28.8100 29.1400 27.5500 27.6200 286,000
Weekend
Weekend
29.6300 29.6850 28.0700 29.0200 295,200
No trading
28.0000 29.7350 26.5500 29.5700 681,100
28.7000 28.7000 26.8050 27.9700 360,600
26.2800 29.4300 26.2800 28.5100 546,600
Weekend
Weekend
23.6400 26.2550 23.5500 25.5600 345,300
23.3600 24.4400 23.3100 23.7700 277,000
21.7700 23.8000 21.6250 23.1000 390,400
21.7300 22.4250 21.3100 21.6900 331,900
22.6800 23.1500 21.5740 21.6400 462,700
Weekend
Weekend
19.6900 23.9900 19.6900 23.2650 1,521,700
19.2300 19.3500 18.6400 19.2400 150,900
19.3200 19.8150 18.8500 19.2300 214,900
18.3400 19.7400 18.1900 19.2400 276,700
18.7900 20.0500 17.9800 18.1000 316,200
2 · 10-Q Pre-market · 08:44 ET 10-Q ↗ 1 · 8-K Pre-market · 08:42 ET 8-K ↗
Weekend
Weekend
18.4700 18.5600 17.5500 18.5100 182,200
18.9600 19.5000 18.6500 18.8000 179,900
19.4100 19.4850 18.8800 19.1300 308,500
19.4800 19.7000 19.1020 19.4600 188,700
20.4200 20.7100 19.6000 20.0500 213,500
Weekend
Weekend
21.4900 21.4900 20.0300 20.6000 160,200
21.4000 22.4100 21.2000 21.4900 139,500
22.3400 22.3600 21.4000 21.9400 411,900
22.6200 22.6600 21.6800 22.3200 161,700
22.0100 23.4500 21.6200 22.6200 512,700
Weekend
Weekend
22.1200 22.3030 21.5100 21.6700 144,700

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.

17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:15 ET Summarise
16 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
13 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
11 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
10 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:21 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
8 S-3ASR S-3ASR (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
7 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:11 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 · 07:00 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 08:44 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:42 ET Summarise