Seagate Technology insider trading
Every open-market purchase and sale by Seagate Technology's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.
| Date | Insider | Trade | Shares | Price | Value | 1M after | 3M after | 6M after |
|---|
Does following Seagate Technology’s insiders pay?
From April 27, 2010 to October 26, 2026, 41 insiders reported 15 open-market purchases and 277 sales not made under a pre-set plan in Seagate Technology. Twelve months after each purchase was reported, the shares were +18.4% against the S&P 500 on average (median +16.1%), over 15 purchases with a full year of prices; 67% beat the index. After sales, the shares moved +21.6% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on November 11, 2013 into $46,143 by November 2, 2026, +12.5% a year. It held shares 33% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $24,023 (+7.0% a year), and held throughout $53,075 (+13.8%).
| Insider | Role | Purchases | 12 months after their purchases | Beat the S&P 500 | Sales | 12 months after their sales | Latest report |
|---|---|---|---|---|---|---|---|
| Luczo Stephen J | Executive Chairman & COB | 2 | +74.9% (2) | 100% | 29 | +4.0% (29) | March 8, 2022 |
| Richarz David K | Executive Vice President,Sales | 0 | — | — | 26 | +1.3% (26) | April 28, 2015 |
| Morton David H Jr | EVP & CFO | 0 | — | — | 20 | +17.9% (20) | March 7, 2018 |
| Whitmore Robert W | EVP & Chief Technical Officer | 0 | — | — | 17 | +27.9% (17) | May 31, 2013 |
| Re Mark | SVP & CTO | 0 | — | — | 13 | −12.9% (13) | May 16, 2017 |
| Geldmacher Jay L | Director | 0 | — | — | 12 | +51.3% (10) | February 2, 2026 |
| Mosley William D | CEO | 0 | — | — | 12 | +6.7% (5) | September 16, 2026 |
| Pimentel Albert A | President, Global Mkts and CSO | 0 | — | — | 12 | −1.5% (12) | August 17, 2015 |
| O Malley Patrick J | EVP & Chief Financial Officer | 0 | — | — | 11 | +37.1% (11) | November 4, 2014 |
| Dehaan Douglas J | General Manager, Samsung HDD | 0 | — | — | 9 | −0.9% (9) | April 29, 2015 |
| Massaroni Kenneth M | EVP,General Counsel, CAO | 0 | — | — | 9 | +4.5% (9) | February 13, 2015 |
| Murphy James J | EVP, Sales & Marketing | 0 | — | — | 9 | −4.1% (9) | December 10, 2019 |
| Park Chong Sup | Director | 0 | — | — | 8 | +3.1% (8) | February 1, 2018 |
| Reyes Gregorio | Director | 0 | — | — | 8 | +6.0% (8) | February 2, 2015 |
| Romano Gianluca | EVP & CFO | 0 | — | — | 8 | −6.8% (3) | September 16, 2026 |
| Biondi Frank | Director | 0 | — | — | 7 | +24.1% (7) | August 9, 2016 |
| Brace Philip G | Former President, CSSG | 2 | +47.1% (2) | 100% | 5 | +10.6% (5) | January 16, 2018 |
| Teh Ban Seng | EVP & Chief Commercial Officer | 0 | — | — | 7 | +189.8% (4) | August 14, 2026 |
| Zander Edward J | Director | 0 | — | — | 7 | +13.3% (7) | October 24, 2023 |
| Marshall Lydia Micheaux | Director | 0 | — | — | 6 | +18.8% (6) | May 8, 2014 |
| Morris John Christopher | EVP & CTO | 0 | — | — | 6 | −10.0% (2) | September 16, 2026 |
| Tilenius Stephanie | Director | 0 | — | — | 5 | +164.0% (3) | May 6, 2026 |
| Chong Kian Fatt | EVP Global Operations | 0 | — | — | 4 | +396.3% (2) | February 23, 2026 |
| Cannon Michael R | Director | 0 | — | — | 3 | +172.4% (3) | June 6, 2025 |
| Fochtman Jeffrey D. | SVP, Business & Marketing | 0 | — | — | 3 | +17.1% (3) | November 10, 2021 |
| Lee James Ci | EVP & CLO | 0 | — | — | 3 | — | October 26, 2026 |
| Naik Ravi | EVP & CIO | 1 | −30.1% (1) | 0% | 2 | −17.0% (2) | November 9, 2021 |
| Schuelke Katherine | SVP, CLO & Corporate Secretary | 0 | — | — | 3 | +11.7% (3) | December 12, 2023 |
| Va Partners I, LLC | Director | 2 | +10.1% (2) | 50% | 1 | −29.7% (1) | February 22, 2022 |
| Valueact Capital Management, L.P. | Director | 3 | +10.8% (3) | 67% | 0 | — | November 30, 2018 |
| Valueact Capital Management, LLC | Director | 1 | +5.1% (1) | 100% | 2 | +11.7% (2) | May 4, 2021 |
| Valueact Capital Master Fund, L.P. | Director | 2 | −12.4% (2) | 0% | 1 | −31.7% (1) | November 15, 2021 |
| Arumugavelu Shankar | Director | 0 | — | — | 2 | — | June 4, 2026 |
| Nygaard Jeffrey D. | Executive Vice President | 1 | +14.0% (1) | 100% | 1 | −26.4% (1) | May 16, 2018 |
| Bruner Judy | Director | 0 | — | — | 1 | +633.0% (1) | May 23, 2025 |
| Coleman William T III | Director | 1 | +16.1% (1) | 100% | 0 | — | November 8, 2013 |
| Lerner James J | President, Cloud Systems | 0 | — | — | 1 | −32.2% (1) | March 13, 2015 |
| Macpherson Regan J | SVP and General Counsel | 0 | — | — | 1 | −13.0% (1) | November 18, 2016 |
| Moyo Dambisa F | Director | 0 | — | — | 1 | +1.1% (1) | October 25, 2017 |
| Samsung Electronics Co Ltd /fi | 10% owner | 0 | — | — | 1 | +7.8% (1) | October 22, 2013 |
When several insiders traded Seagate Technology
Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Seagate Technology in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After the 3 buying crowds with six months of prices, it averaged −3.9% against the index. After 11 selling crowds, +31.1%. One company's history is too short to judge by; the test across every company is the better guide.
| Month | Crowd | 3 months on, vs S&P 500 | 6 months | 12 months |
|---|---|---|---|---|
| June 30, 2026 | 5 selling | −7.9% | not yet | not yet |
| November 28, 2025 | 5 selling | +29.7% | +224.6% | not yet |
| June 30, 2025 | 4 selling | +51.0% | +84.1% | +517.3% |
| December 29, 2023 | 4 selling | −2.9% | +6.4% | −20.8% |
| November 30, 2021 | 3 selling | +7.2% | −7.8% | −37.4% |
| February 26, 2021 | 3 selling | +23.3% | −0.5% | +31.2% |
| February 28, 2019 | 3 buying | −5.0% | −0.5% | 0.0% |
| August 31, 2018 | 3 buying | −13.8% | −7.5% | −0.1% |
| November 30, 2017 | 3 selling | +41.9% | +48.2% | +11.5% |
| February 29, 2016 | 2 buying | −37.9% | −3.7% | +39.3% |
| August 31, 2015 | 3 selling | −35.1% | −33.4% | −42.1% |
| November 29, 2013 | 9 selling | +5.2% | +3.6% | +23.2% |