IBM insider buying and SEC filings, explained
International Business Machines Corp. · CIK 51143
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- NYSE
- Industry (SIC)
- Computer & office Equipment
- State of incorporation
- NY
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$417K
Insiders who bought
3
Sold (not marked 10b5-1)
$5.8M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 26, 2026 | Sale | Robert David Thomas (Senior Vice President) sold 25,000 shares at about $230.32 ($5.8M). Holdings down 34% to 47,800 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 28, 2026 |
| Feb 25, 2026 | Purchase (code P) | Michael Miebach (Director) bought 434 shares at about $233.33 ($101K), reported as a purchase (code P). New position of 434 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 25, 2026 |
| Feb 25, 2026 | Purchase (code P) | Michelle J. Howard (Director) bought 50 shares at $237.83 ($12K), reported as a purchase (code P). Holdings up 35% to 194 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 25, 2026 |
| Jan 30, 2026 | Purchase (code P) | David N. Farr (Director) bought 1,000 shares at $304.00 ($304K), reported as a purchase (code P). Holdings up 12% to 9,258 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 30, 2026 |
87 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
3 insiders bought in 30 days
$417K in purchases since Jan 30, 2026 · Purchases traded Jan 30, 2026 to Feb 25, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| David N. Farr (Director) | $304K | Jan 30, 2026 | SEC filing |
| Michelle J. Howard (Director) | $12K | Feb 25, 2026 | SEC filing |
| Michael Miebach (Director) | $101K | Feb 25, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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