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TRV GP, LLC

CIK 1578973 · last filed 2018-09-04

TRV GP, LLC is a corporate insider who has filed 7 SEC Form 4 insider transactions across 5 companies since 2013. The most recent filing, for RYTM, was dated Sep 4, 2018. Across all open-market trades the lifetime net is −$40.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $10.5M across reported positions. The firm reports its address in Boston, MA. 40 SEC filings were submitted jointly with THIRD ROCK VENTURES 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.

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Disclosed Exposure

$10.46M

Companies

5

Total Filings

7

Lifetime Open-Market Net

-$40.27M

Filer Profile

Reported Address
C/O THIRD ROCK VENTURES
29 NEWBURY STREET, 3RD FLOOR
BOSTON, MA 02116
Phone
(617) 585-2000
State of Incorporation
DE
Related Filers
THIRD ROCK VENTURES LP — 40 joint filings, latest 2018-09-04
Third Rock Ventures GP, L.P. — 40 joint filings, latest 2018-09-04
MARK J LEVIN — 21 joint filings, latest 2018-09-04
ROBERT I TEPPER — 18 joint filings, latest 2018-09-04
KEVIN P STARR — 16 joint filings, latest 2018-09-04
bluebird bio, Inc. — 8 joint filings, latest 2015-02-04
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
RYTM 10%+ Owner 99,105 $102.74 $10.18M $0 1 2018-09-04
CTMX 10%+ Owner 74,293 $3.71 $275.6K $0 1 2017-07-13
Larimar Therapeutics, Inc. (ZFGN) Delisted 10%+ Owner 36,995 — — $0 1 2015-05-18
Carisma Therapeutics Inc. (EBIO) Delisted 10%+ Owner 4,841,591 — — $0 1 2014-02-13
bluebird bio, Inc. (BLUE) Delisted 10%+ Owner 120,849 $4.97 $600.6K -$40.27M 3 2014-01-23

Recent Filings

7 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
2018-09-04 RYTM Other (J) −6,000,000 $0 EDGAR
2017-07-13 CTMX Other (J) −5,100,000 $0 EDGAR
2015-05-18 Larimar Therapeutics, Inc. (ZFGN) Delisted Other (J) −5,000,000 $0 EDGAR
2014-02-13 Carisma Therapeutics Inc. (EBIO) Delisted Mixed +27,065,298 $48.4K EDGAR
2014-01-23 bluebird bio, Inc. (BLUE) Delisted Sell (S) −750,000 -$17.93M EDGAR
2014-01-14 bluebird bio, Inc. (BLUE) Delisted Sell (S) −1,020,000 -$22.34M EDGAR
2013-06-26 bluebird bio, Inc. (BLUE) Delisted Conv (C) +14,202,744 $0 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.