Zenas BioPharma, Inc ZBIO
Open calendar →Zenas BioPharma, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology
Paper trade (simulated — no real money)
Fill: USD 26.8700 · FX 1 USD = 1.278120 SGD · about SGD 34.3431 per unitSign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.
USD closing-price chart (daily close from yfinance · Last year)
USD 27.88 → 26.87 · -3.6%
Numbered dotted lines mark the filtered filings under Announcement Events below.
Price & SEC Filing History 25 Oct 2025 — 26 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.
Date
Open
High
Low
Close
Volume
No data yet
Weekend
Weekend
28.0000
28.3300
26.7300
26.8700
377,500
27.9500
28.8300
27.5100
28.2300
406,000
28.4700
29.4400
27.8950
28.0800
484,000
26.3800
29.7050
26.3800
28.1800
549,000
25.0800
27.5500
25.0800
26.7100
696,500
Weekend
Weekend
25.3600
25.9600
24.5100
24.8400
661,700
24.9600
25.9400
24.2500
25.4000
471,900
24.8200
26.4900
24.3900
24.8600
425,100
22 · 8-K
After market open · 10:01 ET
FORM 8-K ↗
26.1100
27.0000
25.0350
25.1600
519,700
26.9300
27.4900
26.2950
26.4000
602,500
Weekend
Weekend
26.1800
27.6400
26.1800
27.2600
429,600
27.9800
27.9800
25.5100
26.2400
557,500
26.8900
28.8600
26.7750
28.1800
509,100
27.8700
28.1400
26.2800
26.9400
357,600
28.4700
29.0600
27.7700
27.8300
1,131,900
Weekend
Weekend
28.4700
29.2000
27.8400
28.2950
1,513,600
26.8900
29.2300
26.5530
27.9400
881,900
26.9900
28.3800
26.5400
26.9700
623,200
27.3000
27.6150
26.1800
26.7600
440,600
27.0700
28.2300
26.4550
27.5500
615,300
Weekend
Weekend
27.4400
28.5000
25.9000
26.9500
747,800
29.5100
30.1200
25.7000
27.5000
962,900
33.0900
33.0900
29.5300
29.6300
525,100
32.5500
33.8440
32.1500
33.0500
452,800
31.6200
33.1900
31.0000
32.5500
414,500
Weekend
Weekend
32.0400
32.0400
31.2500
31.5000
2,515,200
32.7800
33.4800
31.5500
31.9700
527,800
31.8900
33.2300
31.5850
32.3200
746,400
32.0600
32.0600
30.2700
31.9300
716,000
31.0000
32.0000
30.6600
31.9100
634,600
Weekend
Weekend
21 · S-3ASR
After-hours · 16:49 ET
S-3ASR ↗
31.4800
32.3150
31.1200
31.1200
421,700
31.8800
31.8900
30.7300
31.1000
646,900
33.0200
33.5250
32.0850
32.2900
385,400
32.6500
33.8400
32.3050
33.0500
441,200
No trading
Weekend
Weekend
32.6600
33.2900
32.3810
32.8800
452,700
33.4200
33.6600
32.3650
32.9200
515,100
32.2100
33.3950
31.9300
33.1300
757,500
32.2000
32.7300
31.5500
31.9800
432,300
31.5100
32.7700
29.8800
32.3200
527,700
Weekend
Weekend
32.2700
32.3800
31.1900
31.2700
439,100
32.8100
33.6900
32.3800
32.6200
659,000
33.8000
33.9900
31.9100
33.0400
651,600
32.0000
33.7800
31.6450
33.7700
633,500
32.4000
32.4800
30.9500
31.6500
481,700
Weekend
Weekend
31.8300
32.7900
31.4500
32.2900
808,700
30.7200
32.2000
29.5000
31.6200
1,172,500
32.8000
32.8900
30.9200
31.2500
2,702,700
30.2200
31.9600
30.2200
31.9100
659,800
29.9500
30.8100
28.7200
30.5000
490,100
Weekend
Weekend
28.7600
30.3100
28.1630
29.5100
630,000
30.3900
31.0000
27.8100
29.2000
881,500
20 · 10-Q
Pre-market · 07:15 ET
10-Q ↗
19 · 8-K
Pre-market · 07:05 ET
FORM 8-K ↗
32.0500
32.9730
31.1200
31.2900
461,600
31.4300
32.8800
30.7100
32.4400
1,071,500
32.2400
32.6950
31.6050
31.9900
409,900
Weekend
Weekend
32.8500
33.0800
31.6500
32.4300
264,000
31.5100
33.0000
31.3200
32.1700
676,900
31.9300
32.3800
31.2300
31.8600
411,000
31.0900
31.7300
30.4500
31.4200
378,100
32.0750
32.1800
30.3300
31.1300
429,300
Weekend
Weekend
32.6900
32.9500
30.6000
31.4400
452,200
31.3700
32.9600
30.7500
32.2700
738,000
32.4300
32.4300
30.2500
31.0900
625,600
32.6400
33.3000
31.8100
32.2900
773,800
30.9100
33.4200
30.8500
32.8200
1,153,900
Weekend
Weekend
31.3000
31.3000
30.0900
30.3900
558,900
31.0400
31.5550
30.3000
30.9900
402,000
32.1500
32.3500
31.0100
31.4900
1,168,100
31.0000
34.0500
30.7700
32.3600
1,634,900
29.6800
31.6200
29.0100
30.7000
885,400
Weekend
Weekend
28.0700
30.2600
27.7050
29.5300
769,400
29.3600
29.5800
27.5200
28.2400
884,100
28.4600
29.4800
27.4600
29.4100
611,300
28.4200
28.9400
27.3900
28.7800
692,300
28.2300
28.6900
27.3400
27.8800
857,100
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
18 · 10-Q
Pre-market · 06:36 ET
10-Q ↗
17 · 8-K
Pre-market · 06:14 ET
FORM 8-K ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
16 · 8-K
After-hours · 16:35 ET
FORM 8-K ↗
No trading
No trading
15 · 424B5
Pre-market · 09:20 ET
424B5 ↗
14 · 424B5
Pre-market · 09:18 ET
424B5 ↗
Weekend
Weekend
No trading
13 · 424B5
After-hours · 16:31 ET
424B5 ↗
12 · 424B5
After-hours · 16:29 ET
424B5 ↗
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
11 · DEFA14A
Pre-market · 08:28 ET
DEFA14A ↗
10 · DEF 14A
Pre-market · 08:25 ET
DEF 14A ↗
9 · 10-K
Pre-market · 07:26 ET
10-K ↗
8 · 8-K
Pre-market · 07:17 ET
FORM 8-K ↗
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
7 · 8-K
After-hours · 16:58 ET
FORM 8-K ↗
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
6 · 424B7
After-hours · 16:15 ET
424B7 ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
5 · 8-K
Pre-market · 07:16 ET
FORM 8-K ↗
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
4 · 8-K
After-hours · 16:30 ET
FORM 8-K ↗
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
3 · 10-Q
Pre-market · 07:20 ET
10-Q ↗
2 · 8-K
Pre-market · 07:12 ET
FORM 8-K ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
1 · 8-K
Pre-market · 07:19 ET
FORM 8-K ↗
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.