The largest holder of Phillips 66 stock is BlackRock Advisors LLC, with 27.8 million shares (6.96% of the company), worth about $6.85 billion as of September 25, 2026. The 10 largest holders together own 41.3%.
In Q2 2026, 2,185 institutional holdings reports listed shares worth $54.20 billion.
Insiders reported 104 transactions in the last two years: 23 sales worth $67.13 million and 6 purchases. The newest one on file is from September 16, 2026 (Mandell Brian, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through September 16, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 27.8 million | 6.96% | $6.8B |
| Vanguard Capital Management LLC | 26.2 million | 6.56% | $6.5B |
| State Street Corporation | 26.0 million | 6.53% | $6.4B |
| Vanguard Portfolio Management LLC | 22.2 million | 5.57% | $5.5B |
| Elliott Investment Management LP | 19.3 million | 4.83% | $4.7B |
| Wells Fargo Bank NA | 12.9 million | 3.22% | $3.2B |
| Geode Capital Management LLC | 11.1 million | 2.79% | $2.7B |
| Eaton Vance Management | 7.2 million | 1.80% | $1.8B |
| BNY Mellon Investment Adviser, Inc. | 6.5 million | 1.62% | $1.6B |
| Goldman Sachs Wealth Services LP | 5.6 million | 1.41% | $1.4B |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 2,185 | – | $54.2B |
| Q1 2026 | 2,204 | 313.0 million | $57.0B |
| Q4 2025 | 1,987 | 311.0 million | $40.1B |
| Q3 2025 | 1,931 | 308.0 million | $41.9B |
| Q2 2025 | 1,861 | 316.0 million | $37.6B |
| Q1 2025 | 1,876 | 308.0 million | $37.9B |
| Q4 2024 | 1,859 | 307.0 million | $35.0B |
| Q3 2024 | 1,855 | 310.0 million | $40.4B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Mandell Brian | Sep 16, 2026 | Officer | Sale at price 265.06 per share. | $6.2M |
| Mandell Brian | Sep 16, 2026 | Officer | Conversion of Exercise of derivative security at price 74.70 per share. | $1.7M |
| Kluppel Ann M. | Sep 10, 2026 | Officer | Stock Gift at price 0.00 per share. | – |
| Harbison Richard G | Aug 12, 2026 | Officer | Sale at price 223.76 per share. | $11.7M |
| Harbison Richard G | Aug 12, 2026 | Officer | Conversion of Exercise of derivative security at price 74.70 - 100.44 per share. | $4.7M |
| Mandell Brian | Aug 11, 2026 | Officer | Sale at price 214.02 - 215.00 per share. | $7.2M |
| Mandell Brian | Aug 11, 2026 | Officer | Conversion of Exercise of derivative security at price 74.70 per share. | $2.5M |
| Davis Lisa Ann | Aug 10, 2026 | Director | Sale at price 207.21 - 208.99 per share. | $314,713 |
| Kluppel Ann M. | Aug 10, 2026 | Officer | Sale at price 205.00 - 215.00 per share. | $1.7M |
| Kluppel Ann M. | Aug 10, 2026 | Officer | Conversion of Exercise of derivative security at price 89.05 - 100.44 per share. | $742,019 |
| Sutherland Vanessa Allen | Jul 21, 2026 | General Counsel | Sale at price 208.80 - 211.01 per share. | $854,400 |
| Sutherland Vanessa Allen | Jul 21, 2026 | General Counsel | Sale at price 211.05 per share. | $743,523 |
Newest 12 of 104 insider transactions in the last two years.
BlackRock Advisors LLC, with 6.96% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.56%) and State Street Corporation (6.53%).
2,185 institutional holdings reports listed Phillips 66 shares in Q2 2026 worth $54.20 billion.
In the last two years insiders reported 23 sales and 6 purchases (104 transactions in all); the newest on file is from September 16, 2026.