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finra rule 5131

IPO Lock-Up Periods Explained: When Insider Selling Hits

June 20, 2026 by Bruno

How IPO lock-up periods work, why 180 days is standard, the SEC and FINRA rules behind them, and what tends to happen to the stock when they expire.

Categories Insider Activity, Market Education Tags finra rule 5131, investing basics, ipo basics, ipo lockup, lockup expiration, sec rule 144 Leave a comment

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