SEC Filing Decoder — Quick Reference

What does each SEC filing mean for your trade? One table, zero guesswork.

Filing Types

Sorted by risk level. Filings that can move your position are at the top.

Filing	What It Is	What It Means for You	Risk
424B5	Pricing supplement to shelf registration	Shares are being sold NOW at a specific price. Direct dilution event.	Critical
S-1	Initial registration of shares for sale	New shares being registered — dilution incoming. Watch for EFFECT filing.	High
S-3	Shelf registration (seasoned issuer)	Company can sell shares at any time for up to 3 years. Loaded gun.	High
EFFECT	SEC declares registration effective	Shares can legally be sold starting now. Dilution is live.	High
S-1/A	Amendment to S-1 registration	Updated terms — check for worse pricing or increased share count.	Medium
SC 13D	Activist / large holder disclosure	Someone owns 5%+ and may push for changes. Watch for activist moves.	Medium
DEF 14A	Proxy statement (shareholder vote)	Check for share authorization increase proposals = dilution risk.	Medium
8-K	Current report (material event)	Could be anything — offering, acquisition, CEO change. Read the items.	Varies
10-K	Annual report	Routine filing. Check cash position, burn rate, and going concern language.	Low
10-Q	Quarterly report	Routine filing. Check cash runway and any changes in share structure.	Low

When you see these patterns together, proceed with extreme caution or avoid entirely.

S-1 + EFFECT in same month
Shares are registered AND approved — they are hitting the market NOW. Expect selling pressure.
424B5 with variable pricing
Death spiral risk. The buyer can convert at a discount to market price, creating relentless selling pressure.
Multiple S-1/A amendments
Each amendment usually means terms are getting worse — more shares, lower price, more warrants.
Known toxic lender in selling stockholders
Predatory financing. Lender shorts the stock while converting shares at a discount. The stock rarely recovers.

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