SEC Insider Transactions from Third Rock Ventures V, L.P..

Last updated: 2026-05-14 13:13 UTC | Total transactions: 15

Third Rock Ventures V, L.P. has filed 15 insider transactions across 2 companies since June 2024.

Most recent transaction: a sale of 133618 shares of Rapport Therapeutics, Inc. ($RAPP) on May 11, 2026.

Activity breakdown: 2 open-market purchases and 4 sales.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
May 11, 2026 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found S Common Stock 133618 $40.24 7,268,315.0000 47,661,138 1.81% 0.28%
May 8, 2026 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found S Common Stock 5018 $40.31 7,401,933.0000 47,661,138 0.07% 0.01%
May 7, 2026 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found S Common Stock 271495 $40.12 7,406,951.0000 47,661,138 3.54% 0.57%
April 17, 2026 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found S Common Stock 426005 $40.32 7,678,446.0000 47,661,138 5.26% 0.89%
Oct. 28, 2024 Septerna, Inc. $SEPN Third Rock Ventures V, L.P. Not found C Series A Preferred Stock 41250000 $0.00 0.0000 2,443,678 100.00% 100.00%
Oct. 28, 2024 Septerna, Inc. $SEPN Third Rock Ventures V, L.P. Not found C Series B Preferred Stock 24737017 $0.00 0.0000 2,443,678 100.00% 100.00%
Oct. 28, 2024 Septerna, Inc. $SEPN Third Rock Ventures V, L.P. Not found C Common Stock 4790773 $0.00 8,997,547.0000 2,443,678 113.88% 100.00%
Oct. 28, 2024 Septerna, Inc. $SEPN Third Rock Ventures V, L.P. Not found C Common Stock 2872956 $0.00 9,088,547.0000 2,443,678 46.22% 100.00%
Oct. 28, 2024 Septerna, Inc. $SEPN Third Rock Ventures V, L.P. Not found P Common Stock 370500 $18.00 9,368,047.0000 2,443,678 4.12% 15.16%
Oct. 28, 2024 Septerna, Inc. $SEPN Third Rock Ventures V, L.P. Not found P Common Stock 279500 $18.00 9,368,047.0000 2,443,678 3.08% 11.44%
June 10, 2024 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found C Series B Preferred Stock 298103 $0.00 0.0000 0 100.00% 0.00%
June 10, 2024 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found C Series A Preferred Stock 8000000 $0.00 0.0000 0 100.00% 0.00%
June 10, 2024 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found C Series A Preferred Stock 56091177 $0.00 0.0000 0 100.00% 0.00%
June 10, 2024 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found C Common Stock 969218 $0.00 8,104,451.0000 0 13.58% 0.00%
June 10, 2024 Rapport Therapeutics, Inc. $RAPP Third Rock Ventures V, L.P. Not found C Common Stock 6551449 $0.00 8,104,451.0000 0 421.86% 0.00%