Alexander C. Karp - 20 May 2026 Form 4 Insider Report for Palantir Technologies Inc. (PLTR)

Reporting relationship: Officer, Director
Issuer ticker: PLTR
Reported as of: 20 May 2026
Net transaction value: -$54,109,936
SEC form: 4
Accepted by SEC: 22 May 2026, 20:02:31 UTC
Prior SEC filing: 24 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Devon Klein, under power of attorney

Key filing fact

Alexander C. Karp filed Form 4 for Palantir Technologies Inc. (PLTR) on 22 May 2026.

Key facts

This page summarizes Alexander C. Karp's Form 4 filing for Palantir Technologies Inc. (PLTR).
11 reported transactions and 5 derivative rows are listed below.
Accepted by SEC: 22 May 2026, 20:02.

Change

Previous filing in this sequence was filed on 24 Feb 2026.
Current net transaction value: -$54,109,936.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001823951 Primary reporting owner

Karp Alexander C.

Relationship: Officer, Director
Address: C/O PALANTIR TECHNOLOGIES INC., 19505 BISCAYNE BOULEVARD, SUITE 2350, AVENTURA
Signature: /s/ Devon Klein, under power of attorney
Signature date: 22 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

PLTR transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +397,744
Change %: +6.2%
Price
Shares after: 6,830,002
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F2

PLTR transaction

Class A Common Stock

Sale

Transaction value: $882,142
Shares: -6,635
Change %: -0.1%
Price: $132.95
Shares after: 6,823,367
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F3

PLTR transaction

Class A Common Stock

Sale

Transaction value: $2,323,049
Shares: -17,310
Change %: -0.25%
Price: $134.20
Shares after: 6,806,057
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F4

PLTR transaction

Class A Common Stock

Sale

Transaction value: $3,727,770
Shares: -27,595
Change %: -0.41%
Price: $135.09
Shares after: 6,778,462
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F5

PLTR transaction

Class A Common Stock

Sale

Transaction value: $30,483,391
Shares: -224,009
Change %: -3.3%
Price: $136.08
Shares after: 6,554,453
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F6

PLTR transaction

Class A Common Stock

Sale

Transaction value: $16,693,584
Shares: -122,195
Change %: -1.9%
Price: $136.61
Shares after: 6,432,258
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F7

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

PLTR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -877,500
Change %: -4.8%
Price: $0.000000^*
Shares after: 17,550,000
Date: 20 May 2026
Ownership: Direct
Underlying class: Class B Common Stock
Underlying amount: 877,500
Exercise price
Footnotes: F1, F2, F8, F9

PLTR transaction Derivative

Class B Common Stock

Options Exercise

Transaction value
Shares: +877,500
Change %: +1.7%
Price: $0.000000^*
Shares after: 52,310,493
Date: 20 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 877,500
Exercise price
Footnotes: F1, F2

PLTR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -97,500
Change %: -4.8%
Price: $0.000000^*
Shares after: 1,950,000
Date: 20 May 2026
Ownership: Direct
Underlying class: Class B Common Stock
Underlying amount: 97,500
Exercise price
Footnotes: F1, F2, F9, F10

PLTR transaction Derivative

Class B Common Stock

Options Exercise

Transaction value
Shares: +97,500
Change %: +0.19%
Price: $0.000000^*
Shares after: 52,407,993
Date: 20 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 97,500
Exercise price
Footnotes: F1, F2

PLTR transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares: -397,744
Change %: -0.76%
Price: $0.000000^*
Shares after: 52,010,249
Date: 20 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 397,744
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 10 footnotes

Footnote F1

This transaction is part of a related series of transactions. The Reporting Person acquired rights to 975,000 shares of Class B Common Stock upon incremental vesting of previously granted restricted stock units ("RSUs") on May 20, 2026, converted 397,744 shares of the Class B Common Stock to Class A Common Stock and immediately sold the resulting shares of Class A Common Stock on May 20, 2026. All sales were automatic sales of shares to cover required tax withholding obligations in connection with the vesting event on May 20, 2026 and were conducted in compliance with the Reporting Person's Rule 10b5-1 trading plan.

Footnote F2

The Class B Common Stock is convertible into the Issuer's Class A Common Stock on a 1-for-1 basis and has no expiration date.

Footnote F3

This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $132.48 to $133.43. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (3) through (7) for sales executed in price ranges on the date indicated. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

Footnote F4

This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $133.52 to $134.51. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (3) through (7) for sales executed in price ranges on the date indicated. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

Footnote F5

This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $134.52 to $135.51. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (3) through (7) for sales executed in price ranges on the date indicated. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

Footnote F6

This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $135.52 to $136.515. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (3) through (7) for sales executed in price ranges on the date indicated. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

Footnote F7

This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $136.52 to $136.835. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (3) through (7) for sales executed in price ranges on the date indicated. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

Footnote F8

These securities are RSUs granted pursuant to the Issuer's Amended 2010 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's Class B Common Stock.

Footnote F9

The shares acquired from the incremental vesting of RSUs (as described above) were fully vested as of the transaction date.

Footnote F10

These securities are RSUs granted pursuant to the Issuer's 2020 Executive Equity Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's Class B Common Stock.

SEC remarks

Officer title: Chief Executive Officer. This Form 4 has been compiled based on applicable requirements to reflect the specific transactions described herein and is not intended to disclose or describe all shares and/or other equity securities owned or beneficially held by the Reporting Person. For additional details regarding the Reporting Person's overall stock and equity holdings, please see the Issuer's Proxy Statement filed with the Securities and Exchange Commission on April 24, 2026, including under the heading "Security Ownership Of Certain Beneficial Owners And Management" (subject to the definitions, explanations, and time periods described therein).