William Lewis

INSM

William Lewis serves as director, officer: Chair and CEO at Insmed Incorporated (INSM). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

28 trades

$54.63M

Net Position

Net Seller

$54.63M

Companies Traded

INSM

Active Period

Mar 2025 – Mar 2026

28 total trades

Most Recent

Sell INSM

Mar 5, 2026 · $3.12M

William Lewis's Insider Trading at Insmed Incorporated (INSM)

Buys

0 · $0.00

Sells

28 · $54.63M

Total Shares Bought

Total Shares Sold

471,303

INSM Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Mar 5, 2026↗	Sell	21,398	$146.03	$3.12M	309,801
Feb 23, 2026↗	Sell	10,699	$150.97	$1.62M	309,896
Feb 19, 2026↗	Sell	10,699	$150.97	$1.62M	0
Feb 11, 2026↗	Sell	13,396	$147.79	$1.98M	309,693
Feb 9, 2026↗	Sell	13,396	$147.79	$1.98M	0
Feb 4, 2026↗	Sell	3,009	$156.34	$470.4K	303,882
Feb 3, 2026↗	Sell	3,009	$156.34	$470.4K	0
Jan 22, 2026↗	Sell	10,699	$158.93	$1.70M	316,584
Jan 20, 2026↗	Sell	10,699	$158.93	$1.70M	0
Jan 13, 2026↗	Sell	18,918	$168.95	$3.20M	322,132
Jan 12, 2026↗	Sell	19,215	$169.00	$3.25M	0
Jan 8, 2026↗	Sell	9,676	$174.03	$1.68M	320,987
Jan 6, 2026↗	Sell	9,676	$174.03	$1.68M	0
Dec 18, 2025↗	Sell	10,699	$166.97	$1.79M	0
Dec 4, 2025↗	Sell	10,699	$205.62	$2.20M	0
Aug 18, 2025↗	Sell	6,865	$128.40	$881.5K	0
Aug 4, 2025↗	Sell	6,830	$109.81	$750.0K	0
Jul 15, 2025↗	Sell	6,830	$102.37	$699.2K	0
Jul 1, 2025↗	Sell	6,830	$98.33	$671.6K	0
Jun 16, 2025↗	Sell	135,009	$100.39	$13.55M	0
Jun 2, 2025↗	Sell	12,302	$71.39	$878.3K	0
May 20, 2025↗	Sell	27,887	$67.66	$1.89M	0
May 13, 2025↗	Sell	21,213	$66.73	$1.42M	0
May 1, 2025↗	Sell	6,830	$72.57	$495.7K	0
Apr 15, 2025↗	Sell	6,830	$70.16	$479.2K	0
Apr 1, 2025↗	Sell	6,830	$73.58	$502.6K	0
Mar 17, 2025↗	Sell	25,580	$77.03	$1.97M	0
Mar 3, 2025↗	Sell	25,580	$77.79	$1.99M	0