Insider Profile · SEC Form 4 Activity · Trailing 90 Days

Ribar Geoffrey G

Over the trailing 90 days, Ribar Geoffrey G (Director at EVERSPIN TECHNOLOGIES INC.) sold $1.4M of stock across 3 companies, per 4 SEC Form 4 transactions.

Role: Director
Companies: MRAM QS MTSI
Window: Trailing 90 days · 4 transactions · CIK 1247434
Net activity: −$1.4M ($0 bought · $1.4M sold)
Source: Official filings on sec.gov ↗

By Company (Trailing 90 Days)

Symbol	Company	Txns	Bought	Sold	Net
MRAM	EVERSPIN TECHNOLOGIES INC.	2	—	$794K	−$794K
MTSI	MACOM Technology Solutions Holdings, Inc.	1	—	$587K	−$587K
QS	QuantumScape Corp	1	—	—	$0

Transactions (4)

Date	Symbol	Type	Shares	Value	Description
2026-06-03	QS	Buy	24.2K	$0	Grant, award or other acquisition
2026-05-21	MRAM	Buy	3.9K	$0	Grant, award or other acquisition
2026-05-20	MRAM	Sell	27.5K	$794K	Open market or private sale
2026-05-11	MTSI	Sell	1.6K	$587K	Open market or private sale

Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.

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