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STDN · Standard Nuclear, Inc.
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STDN Standard Nuclear (STDN) Insider Trading, Ownership & Congress Trades

Materials · Industrial inorganic chemicals · CIK 0002086716
Quote by TradingView
SEC filings
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
0
13F, latest reported quarter
Conversions, 180 days
17
Codes C/M, not in net · $0 priced

What the filings say about STDN

Insiders, 180 days
+$19.1M net bought
1 buyer

Standard Nuclear insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, Standard Nuclear, Inc. insiders bought a net $19.1M of stock across 1 Form 4 purchases and sales, with 1 insider buying. Source: SEC Form 4 filings, as of 2026-10-27.

Insider
Filed
Shares
Value
Since filing
Decisive Point Group, LLC
BUY
2026-07-17 SECtraded 2026-07-16
1,275,496
$19.1M
+35.5%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 100.0% of the 1,275,496 shares held after it.
  • No other insider bought within 30 days.
Insider activity: Insider Decisive Point Group, LLC bought about $19.1M of STDN on Jul 16, 2026, the largest insider purchase at the company on our record.
1 transaction on record · a thin record, read with care
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
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Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net +$19.1M over 180 days
+$19.1M of it by a 10%+ holder
more than 97% of Materials
Congress
no House purchase disclosed in the last 12 months
Funds
under five funds report holding it
Revenue
+756.5% year over year (latest quarter)
more than 98% of Materials
Margin
-72.2% net margin (latest quarter)
below 91% of Materials
Buybacks
no share repurchases reported
Short interest
6.4% of the float short (float per yahoo 2026-10-26) · 5.8 days to cover · settled 2026-09-30
What changed in the last 30 days
Nothing new filed in the last 30 days

Watch STDN

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-0.7%12M
-40%-15%+10%+35%2026-072026-072026-082026-092026-092026-102026-10 2026-07-16 · Decisive Point Group, LLC bought $19.1M
Insider buy
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns STDN: institutional holders (13F)

13F holdings, latest reported quarter
SEC 13F
No reported 13F holders

No fund above the reporting threshold listed this stock last quarter. That is a fact, not missing data.

Congress trades in STDN

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

STDN planned insider sales (Form 144)

No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders are net buyers of their own stock.
The record shows a net $19.1M bought by insiders over 180 days. Each figure is a federal filing, dated the day it went public.
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Same sector, ranked by filing activity
Sector by SEC SIC code
JELDLEGHWMSAVYSXTENTGREXGEVOCMTKOPNKEBNET

STDN financials

Revenue growth
+756.5%
XBRL, annual
Net margin
-72.2%

STDN Stock Sonar score 4/7 axes

Find similar shapesCompare

STDN ranks highest on growth (98th percentile) and insider conviction (77th), and lowest on institutional and government (15th), among Materials peers.

Growth
98
Inputs
  • Revenue growth, YoY+756.5% · 98 pct, sector of 128
  • Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Insider conviction
77
Inputs
  • Net Form 4 buying (codes P and S), 180d$19.1M · 97 pct, sector of 80
  • Insider buyers, 180d1 · 56 pct, sector of 80
Institutional and government
15
Inputs
  • Funds adding, latest quarterfewer than five funds report holding it
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quarters$100K · 15 pct, sector of 40
Risk and compliance
35
Inputs
  • Short interest, % of float+6.4% · 35 pct, sector of 143
  • Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
  • EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
  • New text in Risk Factors, latest 10-Kneeds two 10-Ks with a Risk Factors section (not 20-F filers or stubs)
3 not measured: Profitability, Financial health, US patents
  • Profitability needs 2 of 4 inputs, 0 present: fewer than four consecutive quarters of net income; fewer than four consecutive quarters of operating income
  • Financial health needs 1 of 2 inputs, 0 present: no debt line filed
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

4 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

STDN filings, in plain words

Are Standard Nuclear insiders buying or selling STDN?

In the 180 days to 2026-10-27, Standard Nuclear insiders were net buyers, a net $19.1M across purchases and sales reported on Form 4, by 1 buyer.

Read the full summary

In the 180 days to 2026-10-27, Standard Nuclear insiders were net buyers of STDN, a net $19.1M across purchases and sales reported on Form 4 by 1 buyer. Most of that figure, $19.1M, came from a holder of 10% or more rather than an officer or director. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.

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