ATI (ATI) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$191.84
+2.0% on the day
+133.2% over 12 months
52-week range $80.04 – $231.78
Share price and insider trades
ATI closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$84.5M
Insiders buying0
Insiders selling5
ATI insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 5 sold $84.5M of ATI stock on the open market.
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ATI insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $34.8M | 22 |
| Q2 2026 | — | 0 | $21.2M | 16 |
| Q1 2026 | — | 0 | $9.8M | 6 |
| Q4 2025 | — | 0 | $20.4M | 13 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.6×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 ATI INC insiders reported open-market purchases totaling $0, while 5 insiders reported sales totaling $84.5M. 53 of 57 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ATI earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 6, 2026 | +4.0% | Sold $13.4M | +11.1%S&P +0.5% | -7.5% |
| Apr 30, 2026 | -10.3% | None | +6.2%S&P +1.3% | +12.8% |
| Feb 3, 2026 | -2.1% | None | +4.7%S&P -1.3% | +17.7% |
| Oct 28, 2025 | +14.6% | Sold $3.6M | +12.3%S&P +0.3% | -2.1% |
| Jul 31, 2025 | +4.8% | None | -18.6%S&P -2.0% | +1.1% |
| May 1, 2025 | +15.1% | None | +22.4%S&P +2.2% | +19.6% |
| Feb 4, 2025 | +1.4% | None | +13.6%S&P +1.1% | -16.1% |
| Oct 29, 2024 | -0.5% | None | -14.3%S&P -0.1% | +11.0% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 23SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 9,00088,187 held (−9%) | $191.82 | $1.7M | +0.0% | — |
| Sep 16SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 16,50097,187 held (−15%) | $193.06 | $3.2M | -0.6% | — |
| Sep 10SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 16,500113,687 held (−13%) | $207.54 | $3.4M | -7.6% | — |
| Sep 4SEC | David J MorehouseDirector | Sell | 2,48535,826 held (−6%) | $201.61 | $501K | -4.8% | — |
| Sep 2SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 16,500130,187 held (−11%) | $210.01 | $3.5M | -8.7% | — |
| Aug 26SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 16,500146,687 held (−10%) | $206.92 | $3.4M | -7.3% | — |
| Aug 19SEC | Kimberly A FieldsCEO, President | Sell Plan | 9,116105,317 held (−8%) | $231.72 | $2.1M | -17.2% | — |
| Aug 19SEC | Kimberly A FieldsCEO, President | Sell Plan | 8,131114,433 held (−7%) | $230.66 | $1.9M | -16.8% | — |
| Aug 19SEC | Kimberly A FieldsCEO, President | Sell Plan | 4,598100,719 held (−4%) | $232.43 | $1.1M | -17.5% | — |
| Aug 19SEC | Kimberly A FieldsCEO, President | Sell Plan | 2,000122,564 held (−2%) | $229.56 | $459K | -16.4% | — |
| Aug 19SEC | Kimberly A FieldsCEO, President | Sell Plan | 1,000124,564 held (−1%) | $228.32 | $228K | -16.0% | — |
| Jul 30SEC | Kimberly A FieldsCEO, President | Sell Plan | 31,757125,564 held (−20%) | $190.99 | $6.1M | +0.4% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 15,908163,187 held (−9%) | $183.50 | $2.9M | +4.5% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 11,826179,095 held (−6%) | $182.66 | $2.2M | +5.0% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 4,878158,309 held (−3%) | $184.34 | $899K | +4.1% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 2,200190,921 held (−1%) | $181.36 | $399K | +5.8% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 2,000193,321 held (−1%) | $180.00 | $360K | +6.6% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 2,000195,321 held (−1%) | $179.25 | $358K | +7.0% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 400157,321 held (−0%) | $187.50 | $75K | +2.3% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 388157,921 held (−0%) | $185.10 | $72K | +3.6% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 200157,721 held (−0%) | $186.36 | $37K | +2.9% | — |
| Jul 9SEC | Kimberly A FieldsCEO, President | Sell Plan | 200193,121 held (−0%) | $180.85 | $36K | +6.1% | — |
| Jun 24SEC | Kimberly A FieldsCEO, President | Sell Plan | 13,269204,745 held (−6%) | $202.48 | $2.7M | -5.3% | — |
| Jun 24SEC | Kimberly A FieldsCEO, President | Sell Plan | 3,783197,321 held (−2%) | $197.21 | $746K | -2.7% | — |
| Jun 24SEC | Kimberly A FieldsCEO, President | Sell Plan | 3,641201,104 held (−2%) | $197.48 | $719K | -2.9% | — |
| Jun 4SEC | Kimberly A FieldsCEO, President | Sell Plan | 25,823251,940 held (−9%) | $177.97 | $4.6M | +7.8% | — |
| Jun 4SEC | Kimberly A FieldsCEO, President | Sell Plan | 13,865238,075 held (−6%) | $179.05 | $2.5M | +7.1% | — |
| Jun 4SEC | Kimberly A FieldsCEO, President | Sell Plan | 13,164224,911 held (−6%) | $179.71 | $2.4M | +6.7% | — |
| Jun 4SEC | Kimberly A FieldsCEO, President | Sell Plan | 3,001218,014 held (−1%) | $182.75 | $548K | +5.0% | — |
| Jun 4SEC | Kimberly A FieldsCEO, President | Sell Plan | 2,000221,015 held (−1%) | $181.90 | $364K | +5.5% | — |
| Jun 4SEC | Kimberly A FieldsCEO, President | Sell Plan | 1,896223,015 held (−1%) | $180.80 | $343K | +6.1% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 11,982286,543 held (−4%) | $160.60 | $1.9M | +19.5% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 8,780277,763 held (−3%) | $161.12 | $1.4M | +19.1% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 6,420301,125 held (−2%) | $158.38 | $1.0M | +21.1% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 5,568310,895 held (−2%) | $156.29 | $870K | +22.7% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 3,350307,545 held (−1%) | $157.51 | $528K | +21.8% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 2,600298,525 held (−1%) | $159.38 | $414K | +20.4% | — |
| May 12SEC | Kimberly A FieldsCEO, President | Sell Plan | 1,300316,463 held (−0%) | $154.02 | $200K | +24.6% | — |
| Mar 11SEC | David J MorehouseDirector | Sell | 5,32438,168 held (−12%) | $154.53 | $823K | +24.1% | — |
| Mar 11SEC | David J MorehouseDirector | Sell | 1,28543,492 held (−3%) | $153.11 | $197K | +25.3% | — |
| Feb 19SEC | Robert S WetherbeeChair | Sell Plan | 28,724280,061 held (−9%) | $146.07 | $4.2M | +31.3% | — |
| Feb 19SEC | Robert S WetherbeeChair | Sell Plan | 12,435317,188 held (−4%) | $144.01 | $1.8M | +33.2% | — |
| Feb 19SEC | Robert S WetherbeeChair | Sell Plan | 10,438269,623 held (−4%) | $146.67 | $1.5M | +30.8% | — |
| Feb 19SEC | Robert S WetherbeeChair | Sell Plan | 8,403308,785 held (−3%) | $145.17 | $1.2M | +32.1% | — |
| Dec 19SEC | Robert S WetherbeeChair | Sell Plan | 47,355132,676 held (−26%) | $109.57 | $5.2M | +75.1% | — |
| Dec 19SEC | Robert S WetherbeeChair | Sell Plan | 6,507180,031 held (−3%) | $108.86 | $708K | +76.2% | — |
| Dec 19SEC | Robert S WetherbeeChair | Sell Plan | 6,158126,518 held (−5%) | $110.34 | $679K | +73.9% | — |
| Nov 25SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 10,54298,310 held (−10%) | $97.88 | $1.0M | +96.0% | — |
| Nov 25SEC | Tina Killough BuschSvp, Chro | Sell | 2,59821,274 held (−11%) | $93.26 | $242K | +105.7% | — |
| Nov 20SEC | Robert S WetherbeeChair | Sell Plan | 26,998246,538 held (−10%) | $98.80 | $2.7M | +94.2% | — |
| Nov 20SEC | Robert S WetherbeeChair | Sell Plan | 24,711273,536 held (−8%) | $98.21 | $2.4M | +95.3% | — |
| Nov 20SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 10,542108,852 held (−9%) | $97.77 | $1.0M | +96.2% | — |
| Nov 20SEC | Robert S WetherbeeChair | Sell Plan | 8,291298,247 held (−3%) | $97.20 | $806K | +97.4% | — |
| Nov 12SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 10,543119,394 held (−8%) | $97.69 | $1.0M | +96.4% | — |
| Nov 5SEC | Timothy J HarrisSenior Vp And Cdio | Sell Plan | 10,543129,937 held (−8%) | $96.07 | $1.0M | +99.7% | — |
| Oct 16SEC | Kimberly A FieldsCEO, President | Sell Plan | 21,153202,668 held (−9%) | $85.87 | $1.8M | +123.4% | — |
| Oct 8SEC | Kimberly A FieldsCEO, President | Sell Plan | 21,154223,821 held (−9%) | $82.03 | $1.7M | +133.9% | — |
Insiders at ATI INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Kimberly A FieldsCEO, President | — | $43.9M | Aug 19, 2026 | — |
| Robert S WetherbeeChair | — | $21.2M | Feb 19, 2026 | — |
| Timothy J HarrisSenior Vp And Cdio | — | $19.3M | Sep 23, 2026 | — |
| David J MorehouseDirector | — | $1.5M | Sep 4, 2026 | — |
| Tina Killough BuschSvp, Chro | — | $242K | Nov 25, 2025 | — |
ATI stock: common questions
Are ATI INC insiders buying ATI stock?
In the past 12 months, 0 insiders reported open-market purchases of ATI worth $0.
Are ATI INC insiders selling ATI stock?
5 insiders reported sales worth $84.5M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ATI's 52-week range?
Over the past year ATI has traded between $80.04 and $231.78. It last closed at $191.84 on Oct 9, 2026.