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Matrix Capital Management Company, LP

CIK 1410830 · last filed 2023-11-09

Matrix Capital Management Company, LP is a corporate insider who has filed 4 SEC Form 4 insider transactions across 2 companies since 2019. The most recent filing shows the insider bought $28.1M of AURA on Nov 9, 2023. Across all open-market trades the lifetime net is +$13.6M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $356.2M across reported positions. The firm reports its address in Portsmouth, NH. 14 SEC filings were submitted jointly with DAVID E. GOEL.

"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

$356.17M

Companies

2

Total Filings

4

Lifetime Open-Market Net

$13.60M

Filer Profile

Reported Address
3 PLEASANT STREET, SUITE 400
C/O MATRIX CAPITAL MANAGEMENT
PORTSMOUTH, NH 03801
Phone
(781) 522-4948
State of Incorporation
DE
Formerly Known As
Matrix Capital Management Company, LLC (2007–2014)
Related Filers
DAVID E. GOEL — 14 joint filings, latest 2026-05-11
AyurMaya Capital Management Company, LP — same reported address
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
AURA 10%+ Owner 6,922,870 $6.99 $48.39M $78.06M 2 2023-11-09
ADPT Director 12,702,505 $24.23 $307.78M -$64.46M 2 2021-03-10

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
2023-11-09 AURA Buy (P) +3,120,000 $28.08M EDGAR
2021-11-04 AURA Mixed +8,225,740 $49.98M EDGAR
2021-03-10 ADPT Sell (S) −1,612,000 -$64.46M EDGAR
2019-07-02 ADPT Conv (C) +34,664,382 $0 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.