Latest filingAug 28, 2026Most recent Form 4
IBM
INTERNATIONAL BUSINESS MACHINES CORP
NYSETechnologyComputer & office Equipment
Insider activity for last month from 08/17 to 09/17. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$575M1 sells
Net open-market-$575M2 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period2transactions
- I · Code I · dominant1 · 50%
- S · Open-market sells1 · 50%
Activity by reported role
A joint filing can contribute to multiple roles4transactions
- Chief executive officer · dominant1 · 25%
- CHAIR1 · 25%
- PRES1 · 25%
- SVP1 · 25%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeThomas Robert DavidCommon Stock · Direct
47,800.35Aug 26, 2026
Krishna ArvindPhantom Stock · Direct
28,447.467Aug 27, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 17 → Sep 17
LessMore
Top insiders
By absolute net value across the selected period- TD-$5.8M
- KA+$2.0M
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
IBM transaction history
Filters apply within this company and selected period by defaultLatest insider transactions
Form 4 filings from last month. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #117537 | IBM | Krishna Arvind | CHAIRPRESCEO | unknown | 8.37k | $200M | I | 08/28 | 08/27 |
| #117493 | IBM | Thomas Robert David | SVP | sale | 25.0k | -$575M | S | 08/28 | 08/26 |
INTERNATIONAL BUSINESS MACHINES CORP Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at INTERNATIONAL BUSINESS MACHINES CORP?
KRISHNA ARVIND, Thomas Robert David.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Thomas Robert David reported a sale on Aug 26, 2026 valued at $575M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $5,758,087.50. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.