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SC Master Holdings, LLC

CIK 1851024 · last filed 2024-07-05

SC Master Holdings, LLC is a corporate insider who has filed 4 SEC Form 4 insider transactions across 1 company since 2023. Across all open-market trades the lifetime net is −$6.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.2M across reported positions. The firm reports its address in Menlo Park, CA. 13 SEC filings were submitted jointly with Chamath Palihapitiya.

"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

$4.17M

Companies

1

Total Filings

4

Lifetime Open-Market Net

-$6.47M

Filer Profile

Reported Address
506 SANTA CRUZ AVENUE, SUITE 300
MENLO PARK, CA 94025
Phone
(650) 521-9007
State of Incorporation
DE
Related Filers
Chamath Palihapitiya — 13 joint filings, latest 2024-07-05
SC PIPE Holdings LLC — 9 joint filings, latest 2023-11-08
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
PROK 10%+ Owner 2,073,000 $2.01 $4.17M -$6.47M 3 2023-11-17

Recent Filings

4 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
2024-07-05 — U −27,546,000 $0
2023-11-17 PROK Sell (S) −1,505,600 -$1.98M EDGAR
2023-11-14 PROK Sell (S) −1,153,400 -$1.80M EDGAR
2023-10-23 PROK Sell (S) −1,342,500 -$2.70M 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.