Chapman Rowan E

Track record

How each disclosed position did against the S&P ~6 months later

No positions we can measure against the market yet — outcomes appear once a disclosed buy is ~6 months old.

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$0.0000 bought · −$2.16M sold

All filings on record

Every Form 4 transaction we track for this filer

All10Buys0Sells4

Stock	Transaction	Date	~6mo vs S&P
NTRANatera, Inc.	Grant — · 103 sh	2026-06-26	—
NTRANatera, Inc.	Grant — · 1,571 sh	2026-06-26	—
NTRANatera, Inc.	Sell $642.5K · 2,964 sh	2026-06-16	—
NTRANatera, Inc.	Grant — · 97 sh	2026-01-30	—
NTRANatera, Inc.	Sell $89.1K · 366 sh	2025-12-05	—
NTRANatera, Inc.	Sell $972.3K · 4,000 sh	2025-12-05	—
NTRANatera, Inc.	Exercise $128.6K · 4,000 sh	2025-12-05	—
NTRANatera, Inc.	Grant — · 128 sh	2025-10-31	—
NTRANatera, Inc.	Sell $459.2K · 2,750 sh	2025-08-28	—
NTRANatera, Inc.	Grant — · 149 sh	2025-07-25	—

NTRAGrant

2026-06-26 · Natera, Inc.

103

—

NTRAGrant

2026-06-26 · Natera, Inc.

1,571

—

NTRASell

2026-06-16 · Natera, Inc.

$642.5K

—

NTRAGrant

2026-01-30 · Natera, Inc.

97

—

NTRASell

2025-12-05 · Natera, Inc.

$89.1K

—

NTRASell

2025-12-05 · Natera, Inc.

$972.3K

—

NTRAExercise

2025-12-05 · Natera, Inc.

$128.6K

—

NTRAGrant

2025-10-31 · Natera, Inc.

128

—

NTRASell

2025-08-28 · Natera, Inc.

$459.2K

—

NTRAGrant

2025-07-25 · Natera, Inc.

149

—

Newest 10 of 12 filings·Every Form 4 on record, with outcomesPro →

Filing in the same companies

Other insiders active in these names in the last 3 years

RM

Rabinowitz Matthew

NTRA · last 2026-09-11

MS

Moshkevich Solomon

NTRA · last 2026-09-02

CS

Chapman Steven Leonard

NTRA · last 2026-09-01

FJ

Fesko John

NTRA · last 2026-08-10

SJ

Sheena Jonathan

NTRA · last 2026-08-10

BM

Brophy Michael Burkes

NTRA · last 2026-08-04

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.