Key facts
- This page summarizes Alexander C. Karp's Form 4 filing for Palantir Technologies Inc. (PLTR).
- 18 reported transactions and 6 derivative rows are listed below.
- Accepted by SEC: 24 Aug 2026, 20:02.
Alexander C. Karp - 20 Aug 2026 Form 4 Insider Report for Palantir Technologies Inc. (PLTR)
- Reporting relationship
- Officer, Director
- Issuer ticker
- PLTR
- Reported as of
- 20 Aug 2026
- Net transaction value
- -$86,057,473
- SEC form
- 4
- Accepted by SEC
- 24 Aug 2026, 20:02:04 UTC
- Prior SEC filing
- 22 May 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Devon Klein, under power of attorney
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Alexander C. Karp filed Form 4 for Palantir Technologies Inc. (PLTR) on 24 Aug 2026.
Change
- Previous filing in this sequence was filed on 22 May 2026.
- Current net transaction value: -$86,057,473.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
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
- 24 Aug 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
- +402,348
- Change %
- +6.3%
- Price
- Shares after
- 6,834,606
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F2
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $1,964,459
- Shares
- -11,378
- Change %
- -0.17%
- Price
- $172.65
- Shares after
- 6,823,228
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F3
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $3,387,618
- Shares
- -19,493
- Change %
- -0.29%
- Price
- $173.79
- Shares after
- 6,803,735
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F4
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $53,597,839
- Shares
- -306,544
- Change %
- -4.5%
- Price
- $174.85
- Shares after
- 6,497,191
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F5
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $11,161,704
- Shares
- -63,629
- Change %
- -0.98%
- Price
- $175.42
- Shares after
- 6,433,562
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F6
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $229,913
- Shares
- -1,304
- Change %
- -0.02%
- Price
- $176.31
- Shares after
- 6,432,258
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F7
PLTR
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +90,000
- Change %
- +1.4%
- Price
- Shares after
- 6,522,258
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F2, F8
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $725,171
- Shares
- -4,200
- Change %
- -0.06%
- Price
- $172.66
- Shares after
- 6,518,058
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F8, F9
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $2,016,950
- Shares
- -11,602
- Change %
- -0.18%
- Price
- $173.84
- Shares after
- 6,506,456
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F8, F10
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $10,920,269
- Shares
- -62,498
- Change %
- -0.96%
- Price
- $174.73
- Shares after
- 6,443,958
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F8, F11
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $1,965,400
- Shares
- -11,200
- Change %
- -0.17%
- Price
- $175.48
- Shares after
- 6,432,758
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F8, F12
PLTR
transaction
Class A Common Stock
Sale
- Transaction value
- $88,151
- Shares
- -500
- Change %
- -0.01%
- Price
- $176.30
- Shares after
- 6,432,258
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F8, F13
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 %
- -5%
- Price
- $0.000000*
- Shares after
- 16,672,500
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Class B Common Stock
- Underlying amount
- 877,500
- Exercise price
- Footnotes
- F1, F2, F14, F15
PLTR
transaction
Derivative
Class B Common Stock
Options Exercise
- Transaction value
- Shares
- +877,500
- Change %
- +1.7%
- Price
- $0.000000*
- Shares after
- 52,887,749
- Date
- 20 Aug 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 %
- -5%
- Price
- $0.000000*
- Shares after
- 1,852,500
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Class B Common Stock
- Underlying amount
- 97,500
- Exercise price
- Footnotes
- F1, F2, F15, F16
PLTR
transaction
Derivative
Class B Common Stock
Options Exercise
- Transaction value
- Shares
- +97,500
- Change %
- +0.18%
- Price
- $0.000000*
- Shares after
- 52,985,249
- Date
- 20 Aug 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
- -402,348
- Change %
- -0.76%
- Price
- $0.000000*
- Shares after
- 52,582,901
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 402,348
- Exercise price
- Footnotes
- F1, F2
PLTR
transaction
Derivative
Class B Common Stock
Conversion of derivative security
- Transaction value
- Shares
- -90,000
- Change %
- -0.17%
- Price
- $0.000000*
- Shares after
- 52,492,901
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 90,000
- Exercise price
- Footnotes
- F2, F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 16 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 August 20, 2026, converted 402,348 shares of the Class B Common Stock to Class A Common Stock and immediately sold the resulting shares of Class A Common Stock on August 20, 2026. All sales were automatic sales of shares to cover required tax withholding obligations in connection with the vesting event on August 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 $172.19 to $173.13. 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 $173.21 to $174.20. 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 $174.21 to $175.208. 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 $175.21 to $176.19. 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 $176.28 to $176.37. 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
This transaction is part of a related series of transactions undertaken on August 20, 2026 pursuant to a preexisting Rule 10b5-1 trading plan, intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), entered into on March 12, 2026. The Reporting Person converted 90,000 shares of Class B Common Stock to Class A Common Stock and immediately sold the resulting shares of Class A Common Stock in the open market.
Footnote F9
This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $172.19 to $173.09. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (9) through (13) 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 F10
This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $173.21 to $174.20. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (9) through (13) 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 F11
This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $174.21 to $175.20. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (9) through (13) 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 F12
This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $175.21 to $176.18. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (9) through (13) 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 F13
This transaction represents sales executed in multiple open market sales. The sales reflected in this line item were made at prices ranging from $176.26 to $176.33. The price reported above reflects the weighted average sale price of trades occurring within that price range. See footnotes (9) through (13) 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 F14
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 F15
The shares acquired from the incremental vesting of RSUs (as described above) were fully vested as of the transaction date.
Footnote F16
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).