TRV GP V, LLC

CIK 1990717 · last filed 2026-05-13

TRV GP V, LLC is a corporate insider who has filed 3 SEC Form 4 insider transactions across 3 companies since 2023. The most recent filing shows the insider sold $32.3M of RAPP on May 13, 2026. Across all open-market trades the lifetime net is +$87.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $489.9M across reported positions. The firm reports its address in Boston, MA. 16 SEC filings were submitted jointly with Third Rock Ventures GP V, LP.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$489.85M

Companies

3

Total Filings

3

Lifetime Open-Market Net

$87.74M

Filer Profile

Reported Address

201 BROOKLINE AVE.
BOSTON, MA 02215

Phone

(617) 585-2000

State of Incorporation

Related Filers

Third Rock Ventures GP V, LP — 16 joint filings, latest 2026-08-14

Third Rock Ventures V, L.P. — 16 joint filings, latest 2026-08-14

Third Rock Ventures GP VI, L.P. — 13 joint filings, latest 2026-08-14

Third Rock Ventures VI, L.P. — 13 joint filings, latest 2026-08-14

TRV GP IV, LLC — 3 joint filings, latest 2025-11-05

Third Rock Ventures GP IV, L.P. — 3 joint filings, latest 2025-11-05

Third Rock Ventures IV, L.P. — 3 joint filings, latest 2025-11-05

Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
RAPP	10%+ Owner	7,268,315	$43.62	$317.04M	-$32.26M	1	2026-05-13
MAZE	10%+ Owner	7,024,758	$24.60	$172.81M	$0	1	2025-02-04
CARGO Therapeutics, Inc. (CRGX) Delisted	10%+ Owner	2,211,002	$4.47	$9.88M	$120.00M	1	2023-11-14

Recent Filings

3 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-05-13	RAPP	Sell (S)	−801,708	-$32.26M	EDGAR
2025-02-04	MAZE	Conv (C)	+40,281,528	$0	EDGAR
2023-11-14	CARGO Therapeutics, Inc. (CRGX) Delisted	Mixed	+21,266,010	$120.00M	EDGAR

Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.