EcoR1 Venture Opportunity Fund, LP

CIK 1778011 · last filed 2021-11-30

EcoR1 Venture Opportunity Fund, LP is a corporate insider who has filed 1 SEC Form 4 insider transactions across 1 company since 2021. The most recent filing, for NUVB.WS, was dated Nov 30, 2021. Across all open-market trades the lifetime net is +$27.5M, making them a net buyer over the disclosed history. The firm reports its address in San Francisco, CA. 10 SEC filings were submitted jointly with Biotech Opportunity 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.

Disclosed Exposure

$0

Companies

1

Total Filings

1

Lifetime Open-Market Net

$27.54M

Filer Profile

Reported Address

357 TEHAMA STREET #3
SAN FRANCISCO, CA 94103

Phone

(415) 448-6534

State of Incorporation

Related Filers

Biotech Opportunity GP, LLC — 10 joint filings, latest 2023-09-22

EcoR1 Capital Fund Qualified, L.P. — 10 joint filings, latest 2023-09-22

EcoR1 Capital, LLC — 10 joint filings, latest 2023-09-22

OLEG NODELMAN — 10 joint filings, latest 2023-09-22

EcoR1 Panacea Holdings, LLC — 4 joint filings, latest 2021-04-13

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
Nuvation Bio Inc. (NUVB.WS) Delisted		1,147,483	$0.01	$5.9K	$27.54M	1	2021-11-30

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
2021-11-30	Nuvation Bio Inc. (NUVB.WS) Delisted	Mixed	+2,928,684	$27.54M	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.