Steven Leonard Chapman Insider Trading Activity

Corporate InsiderCEO · CIK 1711968

Total trades

$86.6M

Total volume

May 1, 2026

Last activity

NTRA

Natera, Inc.

Steven Leonard Chapman has been net-selling over the last 12 months with 0 purchases and 40 sales across 1 company.

NTRA is the most-traded position with 40 trades. The largest single transaction was a sale of NTRA for $31.3M on Nov 3, 2025.

Performance Scorecard

Forward stock performance after each transaction by Steven Leonard Chapman. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	-2.4%	50%	48
90 days	—	-10.9%	44%	45
120 days	—	-15.5%	36%	45

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

Pro: Trade Markers

NTRA · Natera, Inc.

🔒 Subscribe to see trade entries

Pro members see exactly when Steven Leonard Chapman bought and sold NTRA.

Upgrade to Pro

Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
May 1, 2026	NTRA	Sell	902	$206.16	$186K	−0.6%	CEO
Apr 27, 2026	NTRA	Sell	3,566	$204.39	$729K	−2.3%	CEO
Apr 27, 2026	NTRA	Sell	2,272	$203.75	$463K	−1.5%	CEO
Mar 10, 2026	NTRA	Sell	5,623	$204.13	$1.1M	−3.5%	CEO
Mar 2, 2026	NTRA	Sell	2,463	$200.24	$493K	−1.5%	CEO
Mar 2, 2026	NTRA	Sell	365	$201.18	$73K	−0.2%	CEO
Mar 2, 2026	NTRA	Sell	1,122	$199.17	$223K	−0.7%	CEO
Feb 3, 2026	NTRA	Sell	4,725	$230.77	$1.1M	−3.7%	CEO
Feb 2, 2026	NTRA	Sell	7,445	$233.31	$1.7M	−5.5%	CEO
Feb 2, 2026	NTRA	Sell	6,631	$229.08	$1.5M	−3.1%	CEO
Feb 2, 2026	NTRA	Sell	41,847	$230.03	$9.6M	−20.3%	CEO
Feb 2, 2026	NTRA	Sell	20,079	$230.95	$4.6M	−12.2%	CEO
Feb 2, 2026	NTRA	Sell	9,197	$232.41	$2.1M	−6.4%	CEO
Feb 2, 2026	NTRA	Sell	100	$234.00	$23K	−0.1%	CEO
Jan 28, 2026	NTRA	Sell	3,648	$237.66	$867K	−1.7%	CEO
Jan 27, 2026	NTRA	Sell	2,322	$240.53	$559K	−1.1%	CEO
Jan 21, 2026	NTRA	Sell	1,590	$235.00	$374K	−0.7%	CEO
Jan 20, 2026	NTRA	Sell	71,932	$234.74	$16.9M	−24.9%	CEO
Jan 2, 2026	NTRA	Sell	2,214	$228.64	$506K	−1.6%	CEO
Jan 2, 2026	NTRA	Sell	1,634	$229.67	$375K	−1.2%	CEO
Dec 1, 2025	NTRA	Sell	1,394	$237.05	$330K	−1.0%	CEO
Dec 1, 2025	NTRA	Sell	2,050	$238.13	$488K	−1.4%	CEO
Dec 1, 2025	NTRA	Sell	956	$239.44	$229K	−0.7%	CEO
Nov 3, 2025	NTRA	Sell	1,915	$198.96	$381K	−0.6%	CEO
Nov 3, 2025	NTRA	Sell	2,215	$198.03	$439K	−0.7%	CEO
Nov 3, 2025	NTRA	Sell	156,573	$200.00	$31.3M	−52.0%	CEO
Oct 28, 2025	NTRA	Sell	3,680	$191.46	$705K	−2.4%	CEO
Oct 27, 2025	NTRA	Sell	2,335	$192.32	$449K	−1.5%	CEO
Oct 21, 2025	NTRA	Sell	1,603	$187.95	$301K	−1.0%	CEO
Oct 1, 2025	NTRA	Sell	9,003	$159.78	$1.4M	−5.4%	CEO
Oct 1, 2025	NTRA	Sell	634	$158.84	$101K	−0.4%	CEO
Oct 1, 2025	NTRA	Sell	3,976	$160.49	$638K	−2.5%	CEO
Oct 1, 2025	NTRA	Sell	470	$161.47	$76K	−0.3%	CEO
Sep 30, 2025	NTRA	Sell	9,109	$162.05	$1.5M	−5.1%	CEO
Sep 2, 2025 Filed 3d late	NTRA	Sell	1,907	$167.69	$320K	−1.2%	CEO
Sep 2, 2025 Filed 3d late	NTRA	Sell	1,700	$165.44	$281K	−1.0%	CEO
Sep 2, 2025 Filed 3d late	NTRA	Sell	1,472	$166.29	$245K	−0.9%	CEO
Aug 1, 2025	NTRA	Sell	2,810	$132.43	$372K	−1.7%	CEO
Aug 1, 2025	NTRA	Sell	2,997	$133.31	$400K	−1.8%	CEO
Jul 28, 2025	NTRA	Sell	6,092	$139.81	$852K	−3.5%	CEO
Jul 21, 2025	NTRA	Sell	1,622	$139.29	$226K	−0.9%	CEO
Jul 1, 2025	NTRA	Sell	1,008	$164.00	$165K	−0.6%	CEO
Jul 1, 2025	NTRA	Sell	500	$165.83	$83K	−0.3%	CEO
Jul 1, 2025	NTRA	Sell	3,187	$167.19	$533K	−1.8%	CEO
Jul 1, 2025	NTRA	Sell	648	$167.77	$109K	−0.4%	CEO
Jun 2, 2025	NTRA	Sell	1,512	$156.07	$236K	−0.8%	CEO
Jun 2, 2025	NTRA	Sell	3,123	$157.03	$490K	−1.7%	CEO
Jun 2, 2025	NTRA	Sell	1,476	$158.33	$234K	−0.8%	CEO