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

48 trades

$89.21M

Net Position

Net Seller

$89.21M

Companies Traded

INSM

Active Period

Mar 2021 – Apr 2026

48 total trades

Most Recent

Sell INSM

Apr 17, 2026 · $1.54M

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

Buys

0 · $0.00

Sells

48 · $89.21M

Total Shares Bought

Total Shares Sold

1,581,718

INSM Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Apr 17, 2026	Sell	10,699	$143.97	$1.54M	309,638
Apr 8, 2026	Sell	10,699	$163.22	$1.75M	311,097
Mar 20, 2026	Sell	10,699	$143.52	$1.54M	310,255
Feb 19, 2026	Sell	10,699	$150.97	$1.62M	0
Feb 9, 2026	Sell	13,396	$147.79	$1.98M	0
Feb 3, 2026	Sell	3,009	$156.34	$470.4K	0
Jan 20, 2026	Sell	10,699	$158.93	$1.70M	0
Jan 12, 2026	Sell	19,215	$169.00	$3.25M	0
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
Feb 20, 2025	Sell	25,580	$81.03	$2.07M	351,683
Feb 7, 2025	Sell	79,350	$80.90	$6.42M	453,894
Feb 5, 2025	Sell	25,580	$77.94	$1.99M	398,043
Jan 16, 2025	Sell	38,635	$70.18	$2.71M	404,703
Jan 10, 2025	Sell	15,195	$65.48	$995.0K	392,589
Jan 3, 2025	Sell	25,580	$69.85	$1.79M	384,960
Dec 20, 2024	Sell	25,580	$69.91	$1.79M	390,548
Dec 13, 2024	Sell	25,580	$72.98	$1.87M	392,206
May 15, 2024	Sell	22,198	$25.52	$566.5K	384,125
Jan 10, 2024	Sell	55,007	$29.32	$1.61M	373,538
Jan 5, 2024	Sell	6,979	$29.26	$204.2K	373,538
Oct 31, 2023	Sell	112,000	$24.08	$2.70M	233,924
May 17, 2023	Sell	16,861	$18.58	$313.3K	352,158
Jan 12, 2023	Sell	6,994	$18.00	$125.9K	265,067
Jan 6, 2023	Sell	7,008	$19.80	$138.8K	249,708
Aug 10, 2022	Sell	216,800	$27.84	$6.04M	0
Jul 8, 2022	Sell	96,614	$23.00	$2.22M	256,716
May 18, 2022	Sell	9,394	$19.52	$183.4K	261,824
Mar 25, 2022	Sell	96,614	$23.16	$2.24M	217,624
Jan 13, 2022	Sell	2,873	$25.11	$72.1K	217,624
Jan 7, 2022	Sell	12,463	$26.92	$335.5K	195,093
Dec 28, 2021	Sell	96,614	$27.97	$2.70M	202,219
Oct 1, 2021	Sell	96,614	$27.36	$2.64M	215,526
Mar 18, 2021	Sell	50,000	$36.19	$1.81M	205,969