Third Rock Ventures V, L.P.

Third Rock Ventures V, L.P. serves as 10 percent owner at Rapport Therapeutics, Inc. Common Stock (RAPP). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

1 trades

$11.70M

Total Sells

5 trades

$41.79M

Net Position

Net Seller

$30.09M

Companies Traded

2

SEPN, RAPP

Active Period

Oct 2024 – Aug 2026

6 total trades

Most Recent

Sell SEPN

Aug 14, 2026 · $7.40M

Third Rock Ventures V, L.P.'s Insider Trading at Rapport Therapeutics, Inc. Common Stock (RAPP)

Buys

0 · $0.00

Sells

4 · $34.39M

Total Shares Bought

0

Total Shares Sold

854,708

RAPP Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
May 28, 2026	Sell	18,572	$40.05	$743.8K	6,280,525
May 13, 2026	Sell	133,618	$40.24	$5.38M	6,299,097
May 11, 2026	Sell	276,513	$40.12	$11.09M	6,437,733
Apr 21, 2026	Sell	426,005	$40.32	$17.18M	6,709,228

Third Rock Ventures V, L.P.'s Insider Trading at Septerna Inc (SEPN)

Buys

1 · $11.70M

Sells

1 · $7.40M

Total Shares Bought

650,000

Total Shares Sold

147,200

SEPN Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Aug 14, 2026	Sell	147,200	$50.27	$7.40M	6,068,532
Oct 28, 2024	Buy	650,000	$18.00	$11.70M	6,215,591

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RA CAPITAL MANAGEMENT, L.P.

director, 10 percent owner:

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Elizabeth Bhatt

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Daniel D. Long

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Cheryl Gault

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Samira Shaikhly

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David Bredt

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