Rapport Therapeutics, Inc. - Common Stock, $0.001 par value per share (RAPP)

Q: What does CUSIP 75383L102 represent in this 13F holders report?

CUSIP 75383L102 is the security identifier for RAPP - Rapport Therapeutics, Inc. - Common Stock, $0.001 par value per share used to aggregate holder disclosures.

Q: How many institutions held RAPP - Rapport Therapeutics, Inc. - Common Stock, $0.001 par value per share in Q3 2025?

123 institutional investors reported RAPP - Rapport Therapeutics, Inc. - Common Stock, $0.001 par value per share for Q3 2025. Use the holders table for investor-level position and value details.

CUSIP: 75383L102

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class: Equity / Common Stock, $0.001 par value per share
Total 13F shares: 49,276,697
Total 13F value: $1,463,478,389
Share change: +10,776,624
Put/Call ratio: 72%
SEC-reported price per share: $29.70
Number of holders: 123
Value change: +$335,895,056
Number of buys: 86
Number of sells: 29
Shares outstanding: 47,779,015

Security key

75383L102

Report period

Q3 2025

Institutions

123

Top holders

RAPP full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Rapport Therapeutics, Inc. SEC filings Rapport Therapeutics, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 75383L102

Newer quarter: Q2 2026

Recent filing periods:

Q2 2026

Ownership snapshot

Top reported holders of RAPP - Rapport Therapeutics, Inc. - Common Stock, $0.001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Third Rock Ventures V, L.P.

Disclosed value leader

Third Rock Ventures V, L.P.

Comparable rows

15/15

Latest evidence

30 Sep 2025

13D/G 13F Lead comparable stake: 20% 13D/G row: Third Rock Ventures V, L.P. Showing 1-6 of 15 holder rows.

Quick read

Third Rock Ventures V, L.P. leads the comparable SEC ownership view at 20%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Third Rock Ventures V, L.P.'s linked filing trail.

Comparable ownership Top 5

Third Rock Ventures V, L.P. 20%

JOHNSON & JOHNSON 4.9%

Sofinnova Venture Partners XI, L.P. 4.2%

TRV GP V, LLC 15%

FMR LLC 11%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Third Rock Ventures V, L.P.	13D/G 13D/G	20%	$81,198,952 7,135,233 shares	$0	31 Dec 2024
JOHNSON & JOHNSON	13D/G 13F Company 13D/G 13F	4.9%	$53,000,690 1,784,517 shares	$0	30 Sep 2025
Sofinnova Venture Partners XI, L.P.	13D/G Dr. James I. Healy ("Healy") 13D/G	4.2%	$29,155,258 1,947,579 shares	$0	11 Sep 2025
TRV GP V, LLC	13F Company 13F	15%	$81,127,599 7,135,233 shares	—	30 Jun 2025
FMR LLC	13F Company 13F	11%	$62,246,578 5,474,633 shares	—	30 Jun 2025
ARCH Venture Management, LLC	13F Company 13F	7.8%	$42,433,038 3,728,738 shares	—	30 Jun 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

123

49,276,697

Rows available

123

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders

Q3 2025 holders

123

Holder diff

Investor	Q2 2025 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q2 2025 value	Q3 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend