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MPM Oncology Innovations Fund GP LLC

CIK 1857903 · last filed 2025-11-17

MPM Oncology Innovations Fund GP LLC is a corporate insider who has filed 1 SEC Form 4 insider transactions across 1 company since 2025. The most recent filing shows the insider sold $1.4M of HOWL on Nov 17, 2025. Across all open-market trades the lifetime net is −$1.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.5M across reported positions. The firm reports its address in Boston, MA. 14 SEC filings were submitted jointly with MPM ONCOLOGY INNOVATIONS FUND 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

$5.47M

Companies

1

Total Filings

1

Lifetime Open-Market Net

-$1.40M

Filer Profile

Reported Address
C/O MPM BIOIMPACT
399 BOYLSTON STREET, SUITE 1100
BOSTON, MA 02116
Phone
(617) 425-9200
State of Incorporation
DE
Related Filers
MPM ONCOLOGY INNOVATIONS FUND LP — 14 joint filings, latest 2026-01-14
ANSBERT GADICKE — 12 joint filings, latest 2025-12-04
MPM BioImpact LLC — 12 joint filings, latest 2025-12-04
Oncology Impact Fund (Cayman) Management L.P. — 12 joint filings, latest 2025-12-04
UBS Oncology Impact Fund L.P. — 12 joint filings, latest 2025-12-04
MPM ASSET MANAGEMENT LLC — 10 joint filings, latest 2025-12-04
LUKE EVNIN — 2 joint filings, latest 2026-01-14
MPM ASSET MANAGEMENT INVESTORS BV2018 LLC — 2 joint filings, latest 2026-01-14
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
HOWL 10%+ Owner 5,538,600 $0.99 $5.47M -$1.40M 1 2025-11-17

Recent Filings

1 filing
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
2025-11-17 HOWL Sell (S) −1,467,564 -$1.40M 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.