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Scholar Rock director reports 289K-share purchase

Scholar Rock Holding Corp (SRRK) director Srinivas Akkaraju reported purchases totaling 289,470 common shares held by Samsara BioCapital, L.P. and Samsara Opportunity Fund, L.P.

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Form Type
4

Rhea-AI Filing Summary

Scholar Rock Holding Corp (SRRK) director Srinivas Akkaraju reported purchases totaling 289,470 common shares held by Samsara BioCapital, L.P. and Samsara Opportunity Fund, L.P. The purchases occurred October 23 and October 26, 2026, at reported weighted-average prices of $41.31, $41.82 and $41.59 per share. No Rule 10b5-1 plan is reported. A separate entry lists 27,971 common shares held directly as of October 23, 2026.

Insights

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Insider AKKARAJU SRINIVAS
Role Director
Bought 289,470 shs ($12.00M)
Type Security Shares Price Value
Purchase Common Stock F6, F3 48,988 $41.59 $2.04M
Purchase Common Stock F6, F4 97,982 $41.59 $4.08M
Purchase Common Stock F1, F2, F3 47,000 $41.31 $1.94M
Purchase Common Stock F1, F4 94,000 $41.31 $3.88M
Purchase Common Stock F5, F3 500 $41.82 $21K
Purchase Common Stock F5, F4 1,000 $41.82 $42K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 6,380,517 shares (Indirect, By Samsara BioCapital, L.P.); Common Stock — 723,020 shares (Indirect, By Samsara Opportunity Fund, L.P.); Common Stock — 27,971 shares (Direct)
Footnotes (6)
  1. F1. The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $40.77 to $41.75 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.
  2. F2. The shares held by Samsara BioCapital LP ("Samsara LP") prior to the reported transaction reflect the disposition of 83,585 shares in which the Reporting Person had no pecuniary interest. The disposition of such shares by Samsara LP did not involve a change in the Reporting Person's beneficial ownership of such shares and, accordingly, was exempt from reporting under Section 16.
  3. F3. Securities are directly held by Samsara LP. Samsara BioCapital GP, LLC ("Samsara LLC") is the general partner of Samsara LP and may be deemed to beneficially own the securities held by Samsara LP. The Reporting Person has voting and investment power over the securities held by Samsara LP and, accordingly, may be deemed to beneficially own the securities held by Samsara LP. The Reporting Person disclaims beneficial ownership in these securities except to the extent of his pecuniary interest therein.
  4. F4. 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. The Reporting Person 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. The Reporting Person disclaims beneficial ownership in these securities except to the extent of his pecuniary interest therein.
  5. F5. The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $41.78 to $41.85 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.
  6. F6. The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $41.15 to $41.93 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.
Shares purchased through funds 289,470 shares Six purchases reported for October 23 and October 26, 2026
Common shares purchased 47,000 shares Samsara BioCapital, L.P.; October 23, 2026; $41.31 weighted-average price per share
Common shares purchased 94,000 shares Samsara Opportunity Fund, L.P.; October 23, 2026; $41.31 weighted-average price per share
Common shares purchased 500 shares Samsara BioCapital, L.P.; October 23, 2026; $41.82 weighted-average price per share
Common shares purchased 1,000 shares Samsara Opportunity Fund, L.P.; October 23, 2026; $41.82 weighted-average price per share
Common shares purchased 48,988 shares Samsara BioCapital, L.P.; October 26, 2026; $41.59 weighted-average price per share
Common shares purchased 97,982 shares Samsara Opportunity Fund, L.P.; October 26, 2026; $41.59 weighted-average price per share
Common shares held directly 27,971 shares As of October 23, 2026
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
pecuniary interest regulatory
"except to the extent of his pecuniary interest therein"
beneficially own regulatory
"may be deemed to beneficially own the securities held by Samsara LP"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
voting and investment power regulatory
"The Reporting Person has voting and investment power over the securities"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many SRRK shares did the funds buy, and at what prices?

The two funds reported six purchases totaling 289,470 shares on October 23 and October 26, 2026. Reported weighted-average prices were $41.31 per share for purchases of 47,000 and 94,000 shares; $41.82 for 500 and 1,000 shares; and $41.59 for 48,988 and 97,982 shares. No Rule 10b5-1 plan is reported.

How many SRRK shares did Srinivas Akkaraju hold directly?

A separate entry lists 27,971 common shares held directly as of October 23, 2026. The reported purchases were held by Samsara BioCapital, L.P. and Samsara Opportunity Fund, L.P.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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*
AKKARAJU SRINIVAS

(Last)(First)(Middle)
628 MIDDLEFIELD ROAD

(Street)
PALO ALTO CALIFORNIA 94301

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Scholar Rock Holding Corp [ SRRK ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
10/23/2026
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 Stock10/23/2026P47,000A$41.31(1)6,331,029(2)IBy Samsara BioCapital, L.P.(3)
Common Stock10/23/2026P94,000A$41.31(1)624,038IBy Samsara Opportunity Fund, L.P.(4)
Common Stock10/23/2026P500A$41.82(5)6,331,529IBy Samsara BioCapital, L.P.(3)
Common Stock10/23/2026P1,000A$41.82(5)625,038IBy Samsara Opportunity Fund, L.P.(4)
Common Stock10/26/2026P48,988A$41.59(6)6,380,517IBy Samsara BioCapital, L.P.(3)
Common Stock10/26/2026P97,982A$41.59(6)723,020IBy Samsara Opportunity Fund, L.P.(4)
Common Stock27,971D
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. The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $40.77 to $41.75 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.
2. The shares held by Samsara BioCapital LP ("Samsara LP") prior to the reported transaction reflect the disposition of 83,585 shares in which the Reporting Person had no pecuniary interest. The disposition of such shares by Samsara LP did not involve a change in the Reporting Person's beneficial ownership of such shares and, accordingly, was exempt from reporting under Section 16.
3. Securities are directly held by Samsara LP. Samsara BioCapital GP, LLC ("Samsara LLC") is the general partner of Samsara LP and may be deemed to beneficially own the securities held by Samsara LP. The Reporting Person has voting and investment power over the securities held by Samsara LP and, accordingly, may be deemed to beneficially own the securities held by Samsara LP. The Reporting Person disclaims beneficial ownership in these securities except to the extent of his pecuniary interest therein.
4. 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. The Reporting Person 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. The Reporting Person disclaims beneficial ownership in these securities except to the extent of his pecuniary interest therein.
5. The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $41.78 to $41.85 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.
6. The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $41.15 to $41.93 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.
/s/ Srinivas Akkaraju10/27/2026
** 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)

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