Palantir Technologies Inc.

Rule 10b5-1 Trading Arrangements

During the quarter ended September 30, 2026, the following directors and officers, as defined in Rule 16a-1(f), adopted or terminated a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, as follows:

On August 6, 2026, Shyam Sankar, our Chief Technology Officer and Executive Vice President, terminated a Rule 10b5-1 trading arrangement on behalf of himself and as Trustee of The Sankar Irrevocable Remainder Trust DTD 4/20/2020, which was previously adopted on March 11, 2026 and intended to satisfy the affirmative defense of Rule 10b5-1(c). For additional details about the material terms of this arrangement, refer to the description under the heading “Rule 10b5-1 Trading Arrangements” contained in Part II, Item 5. Other Information of our Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, which is incorporated herein by reference.

On August 10, 2026, Mr. Sankar adopted a Rule 10b5-1 trading arrangement providing for the potential sales of shares of our Class A common stock through various transactions upon the occurrence and satisfaction of certain price and/or other conditions, with 1,450,000 shares being the total of the maximum number of all shares subject to any condition when summed across all possible conditions. The trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The duration of the trading arrangement is until May 11, 2027, or earlier, upon the completion or expiration of all transactions subject to the trading arrangement.

On August 14, 2026, David Glazer, our Chief Financial Officer, terminated a Rule 10b5-1 trading arrangement, which was previously adopted on March 16, 2026 and intended to satisfy the affirmative defense of Rule 10b5-1(c). For additional details about the material terms of this arrangement, refer to the description under the heading “Rule 10b5-1 Trading Arrangements” contained in Part II, Item 5. Other Information of our Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, which is incorporated herein by reference.

On August 19, 2026, PLTR Holdings II LLC, a stockholder whose shares may be deemed to be beneficially owned by Peter Thiel, the Chairman of our Board of Directors, adopted a Rule 10b5-1 trading arrangement providing for the potential purchase of shares of our Class A common stock through various transactions upon the occurrence and satisfaction of certain price and/or other conditions, with 4,000,000 shares being the total of the maximum number of all shares subject to any condition when summed across all possible conditions. The trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The duration of the trading arrangement is until December 16, 2027, or earlier, upon the completion or expiration of all transactions subject to the trading arrangement.

On August 27, 2026, Alexander Karp, our Chief Executive Officer and a member of our Board of Directors, adopted a Rule 10b5-1 trading arrangement providing for the potential sales of shares of our Class A common stock through various transactions upon the occurrence and satisfaction of certain price and/or other conditions, with 7,080,177 shares being the total of the maximum number of all shares subject to any condition when summed across all possible conditions. The trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The duration of the trading arrangement is until June 11, 2027, or earlier, upon the completion or expiration of all transactions subject to the trading arrangement.

On September 14, 2026, Lauren Stat, a member of our Board of Directors, adopted a Rule 10b5-1 trading arrangement providing for the potential sales of shares of our Class A common stock through various transactions upon the occurrence and satisfaction of certain price and/or other conditions, with 39,000 shares being the total of the maximum number of all shares subject to any condition when summed across all possible conditions. The trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The duration of the trading arrangement is until December 31, 2027, or earlier, upon the completion or expiration of all transactions subject to the trading arrangement.

On September 15, 2026, Ryan Taylor, our Chief Revenue Officer and Chief Legal Officer, adopted a Rule 10b5-1 trading arrangement providing for the potential sales of shares of our Class A common stock through various transactions upon the occurrence and satisfaction of certain price and/or other conditions, with 78,000 shares being the total of the maximum number of all shares subject to any condition when summed across all possible conditions. The trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The duration of the trading arrangement is until June 30, 2027, or earlier, upon the completion or expiration of all transactions subject to the trading arrangement.

On September 16, 2026, Mr. Glazer adopted a Rule 10b5-1 trading arrangement providing for the potential sales of shares of our Class A common stock through various transactions upon the occurrence and satisfaction of certain price and/or other conditions, with 82,800 shares being the total of the maximum number of all shares subject to any condition when summed across all possible conditions. The trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The duration of the trading arrangement is until June 30, 2027, or earlier, upon the completion or expiration of all transactions subject to the trading arrangement.

During the quarter ended September 30, 2026, no other directors or officers, as defined in Rule 16a-1(f), adopted orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Regulation S-K Item 408.