Standard Nuclear, Inc. Class A STDN
Open calendar →Standard Nuclear, Inc. Class A Common Stock · Company · NYSE
USD closing-price chart (daily close from yfinance · Last year)
USD 12.30 → 9.65 · -21.5%
Numbered dotted lines mark the filtered filings under Announcement Events below.
Price & SEC Filing History 23 Jul 2025 — 24 Jul 2026 (Last year)
Daily NYSE 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
No data yet
6 · 8-K
After market open · 09:40 ET
8-K ↗
9.0000
9.8500
8.8209
9.6500
860,247
9.0000
9.6100
8.1900
8.9100
1,830,800
5 · 8-K
Pre-market · 09:12 ET
8-K ↗
10.8000
11.0200
9.0100
9.0200
2,021,500
Weekend
Weekend
12.1600
12.4700
10.3000
10.4000
2,987,700
4 · 424B4
After-hours · 16:42 ET
PROSPECTUS ↗
13.5000
13.9800
12.1100
12.3000
5,654,500
No trading
3 · S-1/A
Pre-market · 07:00 ET
REGISTRATION STATEMENT ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
2 · S-1/A
Pre-market · 07:23 ET
REGISTRATION STATEMENT ↗
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
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Weekend
No trading
No trading
No trading
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No trading
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No trading
1 · S-1
After-hours · 17:16 ET
REGISTRATION STATEMENT ↗
No trading
No trading
No trading
No trading
Weekend
Weekend
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Weekend
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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.