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Caris Life Sciences (CAI) director logs RSU tax withholding and large indirect stake

Filing Impact
(Very High)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Caris Life Sciences director and major holder David D. Halbert reported a routine share disposition tied to equity compensation. On the vesting and settlement of restricted stock units (RSUs), 40,712 shares of Common Stock were withheld at $15.25 per share to cover tax obligations, which is recorded as a tax-withholding disposition rather than an open-market sale.

After this event, Mr. Halbert directly holds 2,574,533 shares of Common Stock. In addition, entities associated with him collectively hold 121,025,002 shares indirectly, including interests in Caris Halbert, L.P., ADAPT I Ltd., Carisome I, L.P., Caris Investment II Ltd., Caris Investment III Ltd., and Halbert Family Capital, LLC, with Mr. Halbert disclaiming beneficial ownership except to the extent of his pecuniary interest.

Positive

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Insider HALBERT DAVID D
Role See Remarks
Type Security Shares Price Value
Tax Withholding Common Stock 40,712 $15.25 $621K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 2,574,533 shares (Direct, null); Common Stock — 121,025,002 shares (Indirect, See Footnotes)
Footnotes (1)
  1. Shares withheld for the payment of taxes on the vesting and settlement of RSUs. The Common Stock reported herein includes (i) 76,261,532 shares of Common Stock held by Caris Halbert, L.P., (ii) 8,528,805 shares of Common Stock held by ADAPT I Ltd., (iii) 8,414,427 shares of Common Stock held by Carisome I, L.P., (iv) 645,149 shares of Common Stock held by Caris Investment II Ltd, (v) 2,175,089 shares of Common Stock held by Caris Investment III Ltd, and (vi) 25,000,000 shares held by Halbert Family Capital, LLC. Caris Investment Management, LLC is the general partner of each of Caris Halbert, L.P., Caris Investment II Ltd., and Caris Investment III Ltd. Two family trusts are separately the general partner of ADAPT I Ltd. and the managing general partner of Carisome I, L.P., respectively. Caris Halbert, L.P. is the managing member of Halbert Family Capital, LLC. David Dean Halbert is the managing member of Caris Investment Management, LLC and the trustee of each of the two family trusts, and in such capacities, has voting and investment power with respect to the shares held by each of the foregoing entities. Mr. Halbert disclaims beneficial ownership except to the extent of his pecuniary interest therein.
Tax-withholding shares 40,712 shares Shares withheld to pay RSU-related taxes
Withholding price $15.25 per share Price applied to 40,712 withheld shares
Direct holdings after transaction 2,574,533 shares Common Stock directly held following tax withholding
Indirectly held shares 121,025,002 shares Common Stock held via multiple affiliated entities
Tax-withholding dispositions 1 transaction Count of F-code events in this Form 4
RSUs financial
"Shares withheld for the payment of taxes on the vesting and settlement of RSUs."
RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.
tax-withholding disposition financial
"transaction_action: tax-withholding disposition related to RSU vesting taxes."
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
beneficial ownership financial
"Mr. Halbert disclaims beneficial ownership except to the extent of his pecuniary interest therein."
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"disclaims beneficial ownership except to the extent of his pecuniary interest therein."
indirect ownership financial
"total_shares_following_transaction of 121,025,002 marked as indirect ownership."
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
HALBERT DAVID D
(Last)(First)(Middle)
C/O CARIS LIFE SCIENCES, INC.
750 W. JOHN CARPENTER FREEWAY, SUITE 800
(Street)
IRVING TEXAS 75039
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Caris Life Sciences, Inc. [ CAI ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
XOfficer (give title below)Other (specify below)
See Remarks
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/15/2026F40,712(1)D$15.252,574,533D
Common Stock121,025,002ISee Footnotes(2)(3)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Shares withheld for the payment of taxes on the vesting and settlement of RSUs.
2. The Common Stock reported herein includes (i) 76,261,532 shares of Common Stock held by Caris Halbert, L.P., (ii) 8,528,805 shares of Common Stock held by ADAPT I Ltd., (iii) 8,414,427 shares of Common Stock held by Carisome I, L.P., (iv) 645,149 shares of Common Stock held by Caris Investment II Ltd, (v) 2,175,089 shares of Common Stock held by Caris Investment III Ltd, and (vi) 25,000,000 shares held by Halbert Family Capital, LLC. Caris Investment Management, LLC is the general partner of each of Caris Halbert, L.P., Caris Investment II Ltd., and Caris Investment III Ltd. Two family trusts are separately the general partner of ADAPT I Ltd. and the managing general partner of Carisome I, L.P., respectively. Caris Halbert, L.P. is the managing member of Halbert Family Capital, LLC.
3. David Dean Halbert is the managing member of Caris Investment Management, LLC and the trustee of each of the two family trusts, and in such capacities, has voting and investment power with respect to the shares held by each of the foregoing entities. Mr. Halbert disclaims beneficial ownership except to the extent of his pecuniary interest therein.
Remarks:
Founder, Chairman, and Chief Executive Officer
/s/ J. Russel Denton, Attorney-in-Fact05/18/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Caris Life Sciences (CAI) report for David D. Halbert?

Caris Life Sciences reported that David D. Halbert had 40,712 shares of Common Stock withheld to pay taxes on RSU vesting. This is classified as a tax-withholding disposition rather than an open-market sale of shares.

Was the Caris Life Sciences (CAI) Form 4 transaction an open-market sale?

No. The Form 4 shows 40,712 shares were withheld to satisfy tax obligations on vesting RSUs. This "F" code transaction is a tax-withholding disposition and does not represent an open-market decision to sell shares.

How many Caris Life Sciences (CAI) shares does David D. Halbert hold directly after this filing?

Following the tax-withholding event, David D. Halbert directly holds 2,574,533 shares of Caris Life Sciences Common Stock. This figure reflects his direct ownership after 40,712 shares were withheld for RSU-related tax payments.

What indirect Caris Life Sciences (CAI) holdings are associated with David D. Halbert?

The filing lists 121,025,002 shares of Common Stock held indirectly through entities such as Caris Halbert, L.P., ADAPT I Ltd., Carisome I, L.P., and others. Mr. Halbert disclaims beneficial ownership except for his pecuniary interest.

What does the "F" transaction code mean in the Caris Life Sciences (CAI) Form 4?

The "F" code indicates shares were used to pay the exercise price or tax liability connected to equity awards. Here, 40,712 shares were withheld to cover taxes on RSU vesting, making it a compensation-related event rather than an open-market trade.

What are RSUs in the context of Caris Life Sciences (CAI) insider transactions?

RSUs, or restricted stock units, are share-based awards that vest over time or upon conditions. In this filing, RSUs vested and settled, and 40,712 shares were withheld to pay related taxes, triggering the reported tax-withholding disposition.