Latest filingSep 02, 2026Most recent Form 4
ATI
ATI INC
NYSEIndustrialsSteel Pipe & Tubes
Insider activity for last month from 08/03 to 09/03. 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$1.26B7 sells
Net open-market-$1.26B2 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 period7transactions
- S · Open-market sells · dominant7 · 100%
Activity by reported role
A joint filing can contribute to multiple roles12transactions
- CHAIR · dominant5 · 42%
- PRES5 · 42%
- SVC2 · 17%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeFields Kimberly ACommon Stock, par value $0.10 per share · Direct
114,433Aug 17, 2026
Harris Timothy JCommon Stock, par value $0.10 per share · Direct
130,187Aug 31, 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 03 → Sep 03
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Top insiders
By absolute net value across the selected period- FA-$5.7M
- HJ-$3.5M
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
ATI transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| ATI | Harris Timothy J | SVC | sale10b5-1 | 16.5k | -$346M | S | — | 0.0% | 09/02 | 08/31 |
| ATI | Fields Kimberly A | CHAIRPRES | sale10b5-1 | 4.59k | -$106M | S | −7.0% | 08/19 | 08/17 | |
| ATI | Fields Kimberly A | CHAIRPRES | sale10b5-1 | 9.11k | -$211M | S | −7.0% | 08/19 | 08/17 | |
| ATI | Fields Kimberly A | CHAIRPRES | sale10b5-1 | 8.13k | -$187M | S | −7.0% | 08/19 | 08/17 | |
| ATI | Fields Kimberly A | CHAIRPRES | sale10b5-1 | 2.00k | -$45.9M | S | −7.0% | 08/19 | 08/17 | |
| ATI | Fields Kimberly A | CHAIRPRES | sale10b5-1 | 1.00k | -$22.8M | S | −7.0% | 08/19 | 08/17 |
ATI INC Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at ATI INC?
Harris Timothy J, Fields Kimberly A.
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?
Harris Timothy J reported a sale on Aug 31, 2026 valued at $346M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $12,623,354.12. 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.