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MPM BioVentures IV LLC

CIK 1358312 · last filed 2014-02-11

MPM BioVentures IV LLC is a corporate insider who has filed 3 SEC Form 4 insider transactions across 1 company since 2014. The most recent filing shows the insider sold $122.8M of EPZM on Feb 11, 2014. Across all open-market trades the lifetime net is −$122.8M, making them a net seller over the disclosed history. The firm reports its address in Boston, MA. 41 SEC filings were submitted jointly with MPM BioVentures IV GP LLC.

"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

$0

Companies

1

Total Filings

3

Lifetime Open-Market Net

-$122.85M

Filer Profile

Reported Address
200 CLARENDON STREET, 54TH FLOOR
BOSTON, MA 02116
Phone
(617) 425-9200
State of Incorporation
DE
Related Filers
MPM BioVentures IV GP LLC — 41 joint filings, latest 2016-09-29
MPM Asset Management Investors BV4 LLC — 35 joint filings, latest 2016-03-09
MPM BioVentures IV QP LP — 35 joint filings, latest 2016-03-09
MPM BioVentures IV GmbH & Co. Beteiligungs KG — 30 joint filings, latest 2016-03-09
James Paul Scopa — 18 joint filings, latest 2016-09-29
VAUGHN M KAILIAN — 15 joint filings, latest 2016-09-29
Todd Foley — 14 joint filings, latest 2016-09-29
John Vander Vort — 11 joint filings, latest 2013-06-06
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
Epizyme, Inc. (EPZM) Delisted 10%+ Owner 2,413,819 $1.47 $3.55M -$122.85M 1 2014-02-11

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
2014-02-11 Epizyme, Inc. (EPZM) Delisted Sell (S) −4,199,994 -$122.85M EDGAR
2011-12-16 — Buy (P) — $0
2009-01-27 — Buy (P) +77,070 $619.5K
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.