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Ati Inc (New York Stock Exchange:ATI)
US · Delayed Price · Currency is USD
Industrials · Manufacturing - Metal Fabrication
164.54+7.66 (+4.88%)
Insider Score
––Not scored
ATI Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
ATI Stock Insider Trading Activity
ATI stock’s insider trading shows 27 sales on the open market for an estimated $41.70M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Harris Timothy J Other | Sell | 9,000 | $191.82 | $1.73M | 9.3% | 88,187 | Sep 21, 2026 | — | Form 4 |
| Harris Timothy J Other | Sell | 16,500 | $193.06 | $3.19M | 14.5% | 97,187 | Sep 14, 2026 | — | Form 4 |
| Harris Timothy J Other | Sell | 16,500 | $207.54 | $3.42M | 12.7% | 113,687 | Sep 8, 2026 | — | Form 4 |
| Morehouse David J Director | Sell | 2,485 | $201.61 | $501.00K | 6.5% | 35,826 | Sep 2, 2026 | — | Form 4 |
| Harris Timothy J Other | Sell | 16,500 | $210.01 | $3.47M | 11.2% | 130,187 | Aug 31, 2026 | — | Form 4 |
| Harris Timothy J Other | Sell | 16,500 | $206.92 | $3.41M | 10.1% | 146,687 | Aug 24, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 4,598 | $232.43 | $1.07M | 4.4% | 100,719 | Aug 17, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 9,116 | $231.72 | $2.11M | 8.0% | 105,317 | Aug 17, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 1,000 | $228.32 | $228.32K | 0.8% | 124,564 | Aug 17, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 2,000 | $229.56 | $459.12K | 1.6% | 122,564 | Aug 17, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 8,131 | $230.66 | $1.88M | 6.6% | 114,433 | Aug 17, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 31,757 | $190.99 | $6.07M | 20.2% | 125,564 | Jul 28, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 11,826 | $182.66 | $2.16M | 6.2% | 179,095 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 400 | $187.50 | $75.00K | 0.3% | 157,321 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 200 | $186.36 | $37.27K | 0.1% | 157,721 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 388 | $185.10 | $71.82K | 0.2% | 157,921 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 4,878 | $184.34 | $899.21K | 3.0% | 158,309 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 15,908 | $183.50 | $2.92M | 8.9% | 163,187 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 2,000 | $179.25 | $358.50K | 1.0% | 195,321 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 2,000 | $180.00 | $360.00K | 1.0% | 193,321 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 200 | $180.85 | $36.17K | 0.1% | 193,121 | Jul 7, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 2,200 | $181.36 | $398.99K | 1.1% | 190,921 | Jul 7, 2026 | — | Form 4 |
| Foster James Robert CFO | Option exercise | 163 | $193.82 | $31.59K | 0.3% | 57,824 | Jul 1, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 3,783 | $197.21 | $746.05K | 1.9% | 197,321 | Jun 24, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 3,641 | $197.48 | $719.02K | 1.8% | 201,104 | Jun 23, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 13,269 | $202.48 | $2.69M | 6.1% | 204,745 | Jun 22, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 1,896 | $180.80 | $342.80K | 0.8% | 223,015 | Jun 2, 2026 | — | Form 4 |
| Fields Kimberly A CEO | Sell | 13,164 | $179.71 | $2.37M | 5.5% | 224,911 | Jun 2, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.