An insider sells all their Class A shares. The Form 4 Table I shows zero remaining. Headlines scream "CEO dumps entire stake."
But the CEO still controls 50 million Class B shares with 10x voting power. The Form 4 didn't lie — you just read the wrong table.
The Table I trap
Form 4 has two tables:
| Table | What it shows | What it doesn't show |
|---|---|---|
| Table I | Shares of the specific security that was transacted | Other classes, derivatives, indirect holdings |
| Table II | Derivative securities (options, warrants, convertibles) | Direct holdings in other classes |
When an insider sells Class A shares, Table I shows the transaction and the remaining Class A balance. If they sold all their Class A, the balance shows zero.
But Table I only covers the transacted security class. It says nothing about:
- Class B shares (often with superior voting rights)
- Shares held through trusts or family entities
- Shares held through LLCs or partnerships
- Unvested RSUs or unexercised options (partially in Table II)
Multi-class structures make this worse
Many tech companies have dual-class or multi-class share structures:
- Alphabet (GOOGL/GOOG): Class A (1 vote), Class B (10 votes, not publicly traded), Class C (0 votes)
- Meta (META): Class A (1 vote), Class B (10 votes)
- Snap (SNAP): Class A (1 vote), Class B (10 votes), Class C (0 votes)
When Mark Zuckerberg sells Class A shares, his Form 4 Table I shows a declining Class A balance. But his Class B shares — which give him majority voting control — are reported separately.
A screener that only reads Table I would show Zuckerberg "selling" while his actual control over the company hasn't changed at all.
How to get the full picture
Step 1: Read Table I + Table II together
Table II shows derivative securities. Options, warrants, and convertible notes appear here. The "underlying shares" column tells you the potential future ownership.
Step 2: Check footnotes
Form 4 footnotes often disclose:
- Shares held through trusts ("Shares held by the XYZ Family Trust")
- Indirect beneficial ownership through entities
- 10b5-1 plan details
- Class B or other share class holdings
Step 3: Cross-reference with proxy statement (DEF 14A)
The annual proxy statement has a "Beneficial Ownership" table that shows ALL shares an insider controls across all classes, entities, and trusts. This is the definitive ownership number.
Step 4: Check Schedule 13D/13G
For insiders who own >5% of any class, their 13D or 13G filing shows total beneficial ownership across all share classes and entities.
The hierarchy of insider ownership data
| Source | Completeness | Timeliness |
|---|---|---|
| Form 4 Table I | Single class only | Within 2 business days |
| Form 4 Table I + II + footnotes | Better but still partial | Within 2 business days |
| Proxy statement (DEF 14A) | Complete beneficial ownership | Annual (filed before shareholder meeting) |
| Schedule 13D/13G | Complete for >5% holders | Within 10 days of crossing 5% |
The bottom line
Form 4 Table I is designed to report transactions, not total ownership. Using it to calculate an insider's total stake will mislead you — especially in multi-class companies where the most powerful shares aren't the ones being traded.
Always pair Form 4 data with proxy statements and 13D/13G filings for the complete picture.
Originally published at 13F Insight
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