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Column Group Opportunity III, LP

CIK 1931825 · last filed 2025-11-17

Column Group Opportunity III, LP is a corporate insider who has filed 2 SEC Form 4 insider transactions across 1 company since 2025. The most recent filing shows the insider bought $23.9M of SRZNW on Nov 17, 2025. Across all open-market trades the lifetime net is +$95.9M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.4K across reported positions. The firm reports its address in San Francisco, CA. 30 SEC filings were submitted jointly with Column Group Opportunity III GP, 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

$1.4K

Companies

1

Total Filings

2

Lifetime Open-Market Net

$95.94M

Filer Profile

Reported Address
1 LETTERMAN DRIVE, BUILDING D
SUITE DM-900
SAN FRANCISCO, CA 94129
Phone
(415) 865-2050
State of Incorporation
DE
Related Filers
Column Group Opportunity III GP, LP — 30 joint filings, latest 2026-02-26
COLUMN GROUP III, LP — 28 joint filings, latest 2026-02-26
COLUMN GROUP III-A, LP — 28 joint filings, latest 2026-02-26
TCG Opportunity III GP, LLC — 18 joint filings, latest 2026-02-26
COLUMN GROUP III GP, LP — 17 joint filings, latest 2026-02-26
Column Group IV GP, LP — 14 joint filings, latest 2026-02-09
Column Group IV-A, LP — 14 joint filings, latest 2026-02-09
Column Group IV, LP — 13 joint filings, latest 2026-02-09
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
SRZNW 10%+ Owner 962,718 $0.00 $1.4K $95.94M 2 2025-11-17

Recent Filings

2 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
2025-11-17 SRZNW Buy (P) +1,892,742 $23.94M EDGAR
2025-03-28 SRZNW Mixed +6,206,892 $72.00M 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.