ARCH Venture Partners XII, LLC / ARCH Venture Partners XII, L.P. / ARCH Venture Fund XII, L.P. / Keith Crandell / Robert Nelsen / Kristina Burow / Steven Gillis

Insider

10% Owner

Trades at: SPTX

30D 90D 1Y

Net shares · 365d

+1.1M

1.1M buy · 0 sell

Net value · 365d

$19.8M

$19.8M in · $0 out

Sentiment · 365d

Net buying

100% buying · 0% selling

Open-market trades · 365d

1.1M buy · 0 sell

Net buy / sell volume (all companies)

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Show open-market only

SPTX Exercise·C
May 4, 26

10% Owner

$0

2.7M sh

Own New
SPTX Exercise·C
May 4, 26

10% Owner

$0

2.5M sh

Own New
SPTX Buy·P
May 4, 26

10% Owner

$19.8M

1.1M sh · $18.00

Own +21%
SPTX Exercise·C
May 4, 26

10% Owner

—

2.7M sh

Own +107%
SPTX Exercise·C
May 4, 26

10% Owner

—

2.5M sh

Own New

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
May 4, 2026	SPTX	10% Owner	Exercise C	2.7M	New	—	$0
May 4, 2026	SPTX	10% Owner	Exercise C	2.5M	New	—	$0
May 4, 2026	SPTX	10% Owner	Buy P	1.1M	+21%	$18.00	$19.8M
May 4, 2026	SPTX	10% Owner	Exercise C	2.7M	+107%	—	—
May 4, 2026	SPTX	10% Owner	Exercise C	2.5M	New	—	—

About ARCH Venture Partners XII, LLC / ARCH Venture Partners XII, L.P. / ARCH Venture Fund XII, L.P. / Keith Crandell / Robert Nelsen / Kristina Burow / Steven Gillis

This profile aggregates every SEC Form 4 insider transaction reported by ARCH Venture Partners XII, LLC / ARCH Venture Partners XII, L.P. / ARCH Venture Fund XII, L.P. / Keith Crandell / Robert Nelsen / Kristina Burow / Steven Gillis across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.