Key facts
- This page summarizes Srinivas Akkaraju's Form 4 filing for Kalaris Therapeutics, Inc. (KLRS).
- 4 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 22 May 2026, 19:47.
Srinivas Akkaraju - 20 May 2026 Form 4 Insider Report for Kalaris Therapeutics, Inc. (KLRS)
- Reporting relationship
- Director, 10%+ Owner
- Issuer ticker
- KLRS
- Reported as of
- 20 May 2026
- Net transaction value
- +$1,179,969
- SEC form
- 4
- Accepted by SEC
- 22 May 2026, 19:47:34 UTC
- Prior SEC filing
- 20 Feb 2026
- Next SEC filing
- 04 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Srinivas Akkaraju
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Srinivas Akkaraju filed Form 4 for Kalaris Therapeutics, Inc. (KLRS) on 22 May 2026.
Change
- Previous filing in this sequence was filed on 20 Feb 2026.
- Current net transaction value: +$1,179,969.
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 (5)
CIK 0001253170
Primary reporting owner
AKKARAJU SRINIVAS
- Relationship
- Director, 10%+ Owner
- Address
- C/O SAMSARA BIOCAPITAL, LLC, 628 MIDDLEFIELD ROAD, PALO ALTO
- Signature
- /s/ Srinivas Akkaraju
- Signature date
- 22 May 2026
CIK 0001699737
Samsara BioCapital, L.P.
- Relationship
- 10%+ Owner
- Address
- C/O SAMSARA BIOCAPITAL, LLC, 628 MIDDLEFIELD ROAD, PALO ALTO
- Signature
- Samsara BioCapital, L.P., By: Samsara BioCapital GP, LLC, its General Partner, By /s/ Srinivas Akkaraju, Managing Member
- Signature date
- 22 May 2026
CIK 0001888829
Samsara BioCapital GP, LLC
- Relationship
- 10%+ Owner
- Address
- C/O SAMSARA BIOCAPITAL, LLC, 628 MIDDLEFIELD ROAD, PALO ALTO
- Signature
- Samsara BioCapital GP, LLC, By /s/ Srinivas Akkaraju, Managing Member
- Signature date
- 22 May 2026
CIK 0002086193
Samsara Opportunity Fund, L.P.
- Relationship
- 10%+ Owner
- Address
- C/O SAMSARA BIOCAPITAL, LLC, 628 MIDDLEFIELD ROAD, PALO ALTO
- Signature
- Samsara Opportunity Fund, L.P., By Samsara Opportunity Fund GP, LLC, its General Partner, By /s/ Srinivas Akkaraju, Managing Member
- Signature date
- 22 May 2026
CIK 0002086456
Samsara Opportunity Fund GP, LLC
- Relationship
- 10%+ Owner
- Address
- C/O SAMSARA BIOCAPITAL, LLC, 628 MIDDLEFIELD ROAD, PALO ALTO
- Signature
- Samsara Opportunity Fund GP, LLC, By /s/ Srinivas Akkaraju, Managing Member
- Signature date
- 22 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
KLRS
transaction
Common Stock
Purchase
- Transaction value
- $1,179,969
- Shares
- +244,300
- Change %
- +12%
- Price
- $4.83
- Shares after
- 2,224,147
- Date
- 20 May 2026
- Ownership
- By Samsara Opportunity Fund, L.P.
- Footnotes
- F1, F2
KLRS
transaction
Common Stock
Purchase
- Transaction value
- $1,179,969
- Shares
- +244,300
- Change %
- +12%
- Price
- $4.83
- Shares after
- 2,224,147
- Date
- 20 May 2026
- Ownership
- By Samsara Opportunity Fund, L.P.
- Footnotes
- F1, F2
KLRS
transaction
Common Stock
Purchase
- Transaction value
- $1,179,969
- Shares
- +244,300
- Change %
- +12%
- Price
- $4.83
- Shares after
- 2,224,147
- Date
- 20 May 2026
- Ownership
- By Samsara Opportunity Fund, L.P.
- Footnotes
- F1, F2
KLRS
transaction
Common Stock
Purchase
- Transaction value
- $1,179,969
- Shares
- +244,300
- Change %
- +12%
- Price
- $4.83
- Shares after
- 2,224,147
- Date
- 20 May 2026
- Ownership
- By Samsara Opportunity Fund, L.P.
- Footnotes
- F1, F2
KLRS
transaction
Common Stock
Purchase
- Transaction value
- $1,179,969
- Shares
- +244,300
- Change %
- +12%
- Price
- $4.83
- Shares after
- 2,224,147
- Date
- 20 May 2026
- Ownership
- By Samsara Opportunity Fund, L.P.
- Footnotes
- F1, F2
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- -66,906
- Change %
- -0.62%
- Price
- $0.000000*
- Shares after
- 10,657,028
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital, L.P.
- Footnotes
- F3, F4, F5
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- -66,906
- Change %
- -0.62%
- Price
- $0.000000*
- Shares after
- 10,657,028
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital, L.P.
- Footnotes
- F3, F4, F5
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- -66,906
- Change %
- -0.62%
- Price
- $0.000000*
- Shares after
- 10,657,028
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital, L.P.
- Footnotes
- F3, F4, F5
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- -66,906
- Change %
- -0.62%
- Price
- $0.000000*
- Shares after
- 10,657,028
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital, L.P.
- Footnotes
- F3, F4, F5
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- -66,906
- Change %
- -0.62%
- Price
- $0.000000*
- Shares after
- 10,657,028
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital, L.P.
- Footnotes
- F3, F4, F5
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +14,937
- Change %
- Price
- $0.000000*
- Shares after
- 14,937
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital GP, LLC
- Footnotes
- F6, F7
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +14,937
- Change %
- Price
- $0.000000*
- Shares after
- 14,937
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital GP, LLC
- Footnotes
- F6, F7
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +14,937
- Change %
- Price
- $0.000000*
- Shares after
- 14,937
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital GP, LLC
- Footnotes
- F6, F7
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +14,937
- Change %
- Price
- $0.000000*
- Shares after
- 14,937
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital GP, LLC
- Footnotes
- F6, F7
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +14,937
- Change %
- Price
- $0.000000*
- Shares after
- 14,937
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital GP, LLC
- Footnotes
- F6, F7
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +4,471
- Change %
- +30%
- Price
- $0.000000*
- Shares after
- 19,408
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital Partners, L.P.
- Footnotes
- F6, F8
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +4,471
- Change %
- +30%
- Price
- $0.000000*
- Shares after
- 19,408
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital Partners, L.P.
- Footnotes
- F6, F8
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +4,471
- Change %
- +30%
- Price
- $0.000000*
- Shares after
- 19,408
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital Partners, L.P.
- Footnotes
- F6, F8
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +4,471
- Change %
- +30%
- Price
- $0.000000*
- Shares after
- 19,408
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital Partners, L.P.
- Footnotes
- F6, F8
KLRS
transaction
Common Stock
Other
- Transaction value
- Shares
- +4,471
- Change %
- +30%
- Price
- $0.000000*
- Shares after
- 19,408
- Date
- 20 May 2026
- Ownership
- By Samsara BioCapital Partners, L.P.
- Footnotes
- F6, F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 8 footnotes
Footnote F1
Represents the purchase of shares from Samsara BioCapital, L.P. ("Samsara LP") in a privately negotiated transaction.
Footnote F2
Securities are directly held by Samsara Opportunity Fund, L.P. ("Samsara Opportunity Fund"). Samsara Opportunity Fund GP, LLC ("Samsara Opportunity GP") is the general partner of Samsara Opportunity Fund and may be deemed to beneficially own the securities held by Samsara Opportunity Fund. Dr. Srinivas Akkaraju, MD, Ph.D. has voting and investment power over the securities held by Samsara Opportunity Fund and, accordingly, may be deemed to beneficially own the securities held by Samsara Opportunity Fund. Each of the Reporting Persons disclaims beneficial ownership in these securities except to the extent of its or his pecuniary interest therein.
Footnote F3
Represents a pro rata, in-kind distribution, without additional consideration, and not a purchase or sale of securities, by Samsara LP in respect of redeemed interests in Samsara LP. Of the shares distributed by Samsara LP, (i) 47,498 were distributed to redeeming limited partners, (ii) 14,937 shares were distributed to Samsara BioCapital GP, LLC ("Samsara LLC"), the general partner of Samsara LP, in respect of redeemed interests of non-managing members of Samsara LLC that were retained by Samsara LLC, and (iii) 4,471 shares were distributed to Samsara BioCapital Partners, L.P. ("Samsara BioCapital Partners"), in respect of the redeemed interest of a limited partner of Samsara LP that has been acquired by Samsara BioCapital Partners.
Footnote F4
The shares held by Samsara LP reflects the disposition of 244,300 shares, to Samsara Opportunity Fund as described in footnote (1), in which each of Samsara LLC and Dr. Akkaraju had no pecuniary interest.
Footnote F5
Securities are held by Samsara LP. Samsara LLC is the general partner of Samsara LP and may be deemed to beneficially own the shares held by Samsara LP. Dr. Akkaraju has voting and investment power over the shares held by Samsara LP and, accordingly, may be deemed to beneficially own the shares held by Samsara LP. Each of the Reporting Persons disclaims beneficial ownership in these shares except to the extent of its or his respective pecuniary interest therein.
Footnote F6
Represents receipt of shares in the distribution in kind described in footnote (3).
Footnote F7
Securities are held by Samsara LLC. Dr. Akkaraju has voting and investment power over the shares held by Samsara LLC and, accordingly, may be deemed to beneficially own the shares held by Samsara LLC. Each of the Reporting Persons disclaims beneficial ownership in these shares except to the extent of its or his respective pecuniary interest therein.
Footnote F8
Securities are held by Samsara BioCapital Partners. Dr. Akkaraju has voting and investment power over the shares held by Samsara BioCapital Partners and, accordingly, may be deemed to beneficially own the shares held by Samsara BioCapital Partners. Each of the Reporting Persons disclaims beneficial ownership in these shares except to the extent of its or his respective pecuniary interest therein.