Market Recap — September 21, 2026
Recap of insider activity, SEC filings, and market-moving news for September 21, 2026.
Last generated Oct 21, 2026, 5:58 PM ET
Top Importance Today
Filings and news with the highest AI-ranked importance score.
Takeover Time 2026 LLC Discloses 62.45% Stake in Cheetah Net, Seeks Board Seat
Black Hawk Sets October 13 Vote on Vesicor Merger; $10M PPM Financing Still Unsecured
Nuburu Restates Q2 2026 Financials, Discloses Material Weakness and Fraudulent Disbursement
Lockheed Martin Wins $1.2B Army Contract for Precision Strike Missile Increment 2
Definitive Proxy Filed for Remix Reverse Merger: Existing Passage Bio Holders to Own Just 6%
Wabtec Signs $700M+ Rail Services Deal for Guinea's Simandou Project
Algorhythm Completes $23M Azure Energy Acquisition with 19.99% Dilution and New $4M Debt Exchange
CEO Michael Halstead Buys $1.35M of Cybin Stock at $13.47
Optimum to Restate FY2025 Financials, Cutting Losses by Up to $720M
IB Acquisition Corp. Discloses Full Terms of $106M Convertible Notes and $50M Equity Line to Fund GNQ Merger
IB Acquisition Corp. Lines Up $106M Convertible Notes and $50M Equity Line to Back GNQ Merger
Gauzy Faces Nasdaq Delisting; Appeal Planned to Halt Suspension
Largest Open-Market Insider Buys
Form 4 open-market purchases ranked by dollar amount.
Grab CEO Tan Anthony Ping Yeow Buys $29.9M of Stock in Open Market
Director James Monroe III Buys $29.8M of Globalstar Stock Near 52-Week High
Activist Conifer Adds $16.9M More to Group 1 Stake Near 52-Week Low
Apeiron Investment Group Adds $7M to Enhanced Group Stake at $1.15
CEO Michael Halstead Buys $1.35M of Cybin Stock at $13.47
CEO Hovsepian Adds $100K More — Now 362,746 Shares
CFO Knauf Mark Harry Buys $24K of Helio Corp Stock in Open Market
Largest Open-Market Insider Sells
Form 4 open-market sales ranked by dollar amount.
Notable 8-Ks and News
Material events and breaking news with importance score 6 or higher.
Lockheed Martin Wins $1.2B Army Contract for Precision Strike Missile Increment 2
Wabtec Signs $700M+ Rail Services Deal for Guinea's Simandou Project
Algorhythm Completes $23M Azure Energy Acquisition with 19.99% Dilution and New $4M Debt Exchange
Optimum to Restate FY2025 Financials, Cutting Losses by Up to $720M
IB Acquisition Corp. Lines Up $106M Convertible Notes and $50M Equity Line to Back GNQ Merger
Optimum Withdraws Reliance on Prior Financials; Restatement to Cut Losses by Up to $720M
Google Backs Georgia Nuclear Uprates, Unlocking $900M in Customer Benefits
Elemental Royalty to Acquire $290M Orion Portfolio, Divest Generation Arm, and Reshuffle Leadership
TransDigm's Extant Aerospace Buys Rotorcraft, Land Systems, and Business Jet Portfolio
FDA Briefing Doc Backs Galleri Cancer Test, GRAIL Soars 34%
Form 144 Notices
Notices that restricted shares may be sold soon — often a precursor to insider selling.
Day boundary: 00:00 ET (America/New_York). Filings accepted late may appear in the next day's recap.