Person · CIK 1685904

Roger Adsett

Chief Operating Officer at INSMED; director at Definium Therapeutics

Earlier: Landos Biopharma

Source: Forms 3, 4, 5 and 144 on SEC EDGAR

Sold on Form 4$62.7M

Noticed on Form 144$29.4M

Bought on Form 4$48K

Companies3

Holdings now

As reported after the latest Form 3, 4 or 5 at each company.

How these figures work

Options and RSUs are from the latest filing that lists them; earlier grants may also be held. Holdings can be out of date when a person stops filing.

Company	Security	Held	Shares or units	As of
INSMED INSM	Common Stock	Directly	98,744	Aug 10, 2026 · Filing · EDGAR
Definium Therapeutics DFTX	Common Shares	Directly	3,555	Jun 11, 2026 · Filing · EDGAR
Definium Therapeutics DFTX	Stock Option (Right to Buy) exercise $24.11, expires Jun 10, 2036, into Common Shares	Directly	14,620	Jun 11, 2026 · Filing · EDGAR

Sold and noticed by quarter

Sold (Form 4) Noticed (Form 144) Bought (Form 4)

Quarterly totals as a table

Quarter	Sold (Form 4)	Noticed (Form 144)	Bought (Form 4)
Q3 2026	$32M	Not machine-readable	—
Q2 2026	$15.4M	$14.5M	—
Q1 2026	$870K	$870K	—
Q3 2025	$3.2M	$3.2M	—
Q2 2025	$1.8M	$1.8M	—
Q1 2025	$7.8M	$7.8M	—
Q2 2024	$350K	$352K	—
Q1 2024	$454K	$454K	—
Q2 2023	$301K	$477K	—
Q1 2023	$118K	Not machine-readable	—
Q4 2022	$223K	Not machine-readable	—
Q2 2022	$67K	Not machine-readable	—
Q1 2022	$160K	Not machine-readable	—
Q4 2018	—	—	$48K

Form 144 notices went onto EDGAR as structured data on April 13, 2023. Earlier notices were filed on paper and cannot be read here, so those quarters show no noticed amount.

Planned sales (Form 144) and the sales that followed

Each Form 144 notice of a planned sale, grouped by broker and 10b5-1 plan, with the Form 4 sales we matched to it.

How we match

A Form 144 is a notice of a planned sale by an affiliate. SEC Tracker matches each notice to Form 4 sales by the same person at the same company within 90 days of the notice, up to the shares noticed. The match is our inference, not something either filing states.

Notice date	Noticed	Planned sale	Outcome	Links
INSMED INSM · Merrill Lynch · 10b5-1 plan adopted Dec 3, 2025 · 1 notice
Apr 1, 2026	88,060 · ~$14.5M	Apr 1, 2026	Sold as noticed Sold 88,060 in 3 sales, Apr 1 to Apr 1 · $14.5M Form 4	Filing · EDGAR
INSMED INSM · Merrill Lynch · No 10b5-1 plan stated · 14 notices
Feb 3, 2026	791 · ~$124K	Feb 3, 2026	Sold as noticed Sold 791 at $156.17 on Feb 3 · $124K Form 4	Filing · EDGAR
Jan 8, 2026	2,059 · ~$359K	Jan 8, 2026	Sold as noticed Sold 2,059 at $174.17 on Jan 8 · $359K Form 4	Filing · EDGAR
Jan 7, 2026	802 · ~$140K	Jan 7, 2026	Sold as noticed Sold 802 at $175.07 on Jan 7 · $140K Form 4	Filing · EDGAR
Jan 6, 2026	1,429 · ~$248K	Jan 6, 2026	Sold as noticed Sold 1,429 at $173.33 on Jan 6 · $248K Form 4	Filing · EDGAR
Aug 19, 2025	25,000 · ~$3.2M	Aug 19, 2025	Sold as noticed Sold 25,000 in 2 sales, Aug 19 to Aug 19 · $3.2M Form 4	Filing · EDGAR
Jun 3, 2025	1,860 · ~$133K	Jun 3, 2025	Sold as noticed Sold 1,860 at $71.50 on Jun 3 · $133K Form 4	Filing · EDGAR
May 14, 2025	1,925 · ~$126K	May 14, 2025	Sold as noticed Sold 1,925 at $65.61 on May 14 · $126K Form 4	Filing · EDGAR
May 13, 2025	7,482 · ~$507K	May 13, 2025	Sold as noticed Sold 7,482 at $67.81 on May 13 · $507K Form 4	Filing · EDGAR
Feb 6, 2025	46,000 · ~$3.7M	Feb 6, 2025	Sold as noticed Sold 45,705 in 2 sales, Feb 6 to Feb 7 · $3.7M Form 4	Filing · EDGAR
Jan 10, 2025	1,298 · ~$83K	Jan 10, 2025	Sold as noticed Sold 1,298 at $63.86 on Jan 10 · $83K Form 4	Filing · EDGAR
Jan 8, 2025	1,882 · ~$124K	Jan 8, 2025	Sold as noticed Sold 1,882 at $66.10 on Jan 8 · $124K Form 4	Filing · EDGAR
Jan 7, 2025	2,444 · ~$162K	Jan 7, 2025	Sold as noticed Sold 2,444 at $65.95 on Jan 7 · $161K Form 4	Filing · EDGAR
May 14, 2024	7,857 · ~$201K	May 14, 2024	Sold as noticed Sold 7,857 at $25.50 on May 14 · $200K Form 4	Filing · EDGAR
Jan 5, 2024	15,666 · ~$454K	Jan 5, 2024	Sold as noticed Sold 15,666 in 4 sales, Jan 5 to Jan 12 · $454K Form 4 (1) · Form 4 (2) · Form 4 (3)	Filing · EDGAR
INSMED INSM · Merrill Lynch · 10b5-1 plan adopted Mar 4, 2025 · 1 notice
Jun 16, 2025	10,686 · ~$1.1M	Jun 16, 2025	Sold as noticed Sold 10,686 in 2 sales, Jun 16 to Jun 16 · $1.1M Form 4	Filing · EDGAR
INSMED INSM · Merrill Lynch · 10b5-1 plan adopted Sep 6, 2024 · 2 notices
Feb 10, 2025	42,975 · ~$3.4M	Feb 10, 2025	Sold as noticed Sold 42,975 in 3 sales, Feb 10 to Feb 10 · $3.4M Form 4	Filing · EDGAR
Jan 10, 2025	5,061 · ~$326K	Jan 10, 2025	Sold as noticed Sold 5,061 in 2 sales, Jan 10 to Jan 14 · $329K Form 4 (1) · Form 4 (2)	Filing · EDGAR
INSMED INSM · Merrill Lynch · 10b5-1 plan adopted Mar 15, 2023 · 3 notices
May 14, 2024	5,945 · ~$152K	May 14, 2024	Sold as noticed Sold 5,945 at $25.09 on May 17 · $149K Form 4	Filing · EDGAR
Jun 13, 2023	8,981 · ~$173K	Jun 13, 2023	Not sold within 90 days	Filing · EDGAR
May 15, 2023	15,797 · ~$304K	May 15, 2023	Sold as noticed Sold 15,797 in 4 sales, May 15 to Jun 13 · $301K Form 4 (1) · Form 4 (2)	Filing · EDGAR
Sales without a matching Form 144 · 11 sales No matching Form 144 found. Not every sale needs one: small sales and sales by people who are not affiliates are exempt.
—	—	—	Sold without notice INSMED (INSM): Sold 239,850 at $133.27 on Aug 10, 2026 · $32M	Filing · EDGAR
—	—	—	Sold without notice INSMED (INSM): Sold 2,370 at $102.27 on Jun 3, 2026 · $242K	Filing · EDGAR
—	—	—	Sold without notice INSMED (INSM): Sold 5,837 at $116.18 on May 13, 2026 · $678K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 3,194 at $17.99 on Jan 10, 2023 · $57K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 3,044 at $19.75 on Jan 5, 2023 · $60K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 11,855 at $18.80 on Nov 22, 2022 · $223K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 2,022 at $20.34 on May 17, 2022 · $41K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 1,394 at $18.45 on May 16, 2022 · $26K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 1,217 at $24.58 on Jan 12, 2022 · $30K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 1,759 at $26.00 on Jan 6, 2022 · $46K	Filing · EDGAR
—	—	—	Notice not machine-readable INSMED (INSM): Sold 3,068 at $27.61 on Jan 5, 2022 · $85K	Filing · EDGAR

Every transaction, by company

Each Form 3, 4 and 5 transaction in plain words, newest first.

How these figures work

Values are shares times the price each filing states; grants, exercises and gifts usually state no price. Held after is what the filing reports was held once the transaction was done, directly or through the named holder.

INSMED INSM Chief Operating Officer · filings 2016 to 2026 · sold $62.7M · bought $48K · $29.4M noticed on Form 144

Date	Transaction	Shares	Price	Value	Held after	Source
Aug 10, 2026	Option or RSU exercised or converted	+82,280	$13.67	$1.1M	181,024 direct	Filing · EDGAR
Aug 10, 2026	Option or RSU exercised or converted	+76,600	$17.16	$1.3M	257,624 direct	Filing · EDGAR
Aug 10, 2026	Option or RSU exercised or converted	+80,970	$30.46	$2.5M	338,594 direct	Filing · EDGAR
Aug 10, 2026	Open-market or private sale	−239,850	$133.27	$32M	98,744 direct	Filing · EDGAR
Aug 10, 2026	Option or RSU exercised or converted Stock Option (right to buy)	−82,280			0 direct	Filing · EDGAR
Aug 10, 2026	Option or RSU exercised or converted Stock Option (right to buy)	−76,600			0 direct	Filing · EDGAR
Aug 10, 2026	Option or RSU exercised or converted Stock Option (right to buy)	−80,970			0 direct	Filing · EDGAR
Jun 3, 2026	Open-market or private sale	−2,370	$102.27	$242K	98,603 direct	Filing · EDGAR
May 13, 2026	Open-market or private sale	−5,837	$116.18	$678K	100,973 direct	Filing · EDGAR
Apr 1, 2026	Option or RSU exercised or converted	+88,060	$14.56	$1.3M	194,870 direct	Filing · EDGAR
Apr 1, 2026	Sale under a 10b5-1 plan	−6,715	$163.18	$1.1M	188,155 direct	Filing · EDGAR
Apr 1, 2026	Sale under a 10b5-1 plan	−19,001	$164.11	$3.1M	169,154 direct	Filing · EDGAR
Apr 1, 2026	Sale under a 10b5-1 plan	−62,344	$164.95	$10.3M	106,810 direct	Filing · EDGAR
Apr 1, 2026	Option or RSU exercised or converted Stock Option (right to buy)	−88,060			0 direct	Filing · EDGAR
Feb 3, 2026	Open-market or private sale	−791	$156.17	$124K	106,810 direct	Filing · EDGAR
Jan 8, 2026	Open-market or private sale	−2,059	$174.17	$359K	107,601 direct	Filing · EDGAR
Jan 7, 2026	Open-market or private sale	−802	$175.07	$140K	109,660 direct	Filing · EDGAR
Jan 6, 2026	Open-market or private sale	−1,429	$173.33	$248K	110,462 direct	Filing · EDGAR
Jan 2, 2026	Grant or award from the company	+5,998			111,891 direct	Filing · EDGAR
Jan 2, 2026	Grant or award from the company Stock Option (right to buy)	+31,280			31,280 direct	Filing · EDGAR
Aug 19, 2025	Open-market or private sale	−20,193	$127.42	$2.6M	110,444 direct	Filing · EDGAR
Aug 19, 2025	Open-market or private sale	−4,807	$128.27	$617K	105,637 direct	Filing · EDGAR
Jun 16, 2025	Sale under a 10b5-1 plan	−6,500	$98.50	$640K	134,823 direct	Filing · EDGAR
Jun 16, 2025	Sale under a 10b5-1 plan	−4,186	$99.32	$416K	130,637 direct	Filing · EDGAR
Jun 3, 2025	Open-market or private sale	−1,860	$71.50	$133K	141,323 direct	Filing · EDGAR
May 15, 2025	Grant or award from the company	+6,508			143,183 direct	Filing · EDGAR
May 15, 2025	Grant or award from the company Stock Option (right to buy)	+31,610			31,610 direct	Filing · EDGAR
May 14, 2025	Open-market or private sale	−1,925	$65.61	$126K	136,675 direct	Filing · EDGAR
May 13, 2025	Open-market or private sale	−7,482	$67.81	$507K	138,600 direct	Filing · EDGAR
Feb 10, 2025	Sale under a 10b5-1 plan	−11,053	$77.02	$851K	178,004 direct	Filing · EDGAR
Feb 10, 2025	Sale under a 10b5-1 plan	−5,781	$78.36	$453K	172,223 direct	Filing · EDGAR
Feb 10, 2025	Sale under a 10b5-1 plan	−26,141	$79.33	$2.1M	146,082 direct	Filing · EDGAR
Feb 7, 2025	Open-market or private sale	−100	$79.57	$8K	189,057 direct	Filing · EDGAR
Feb 6, 2025	Open-market or private sale	−45,605	$80.90	$3.7M	189,157 direct	Filing · EDGAR
Feb 5, 2025	Grant or award from the company	+88,680			234,762 direct	Filing · EDGAR
Jan 14, 2025	Sale under a 10b5-1 plan	−1,457	$68.72	$100K	146,082 direct	Filing · EDGAR
Jan 10, 2025	Sale under a 10b5-1 plan	−1,298	$63.86	$83K	151,143 direct	Filing · EDGAR
Jan 10, 2025	Sale under a 10b5-1 plan	−3,604	$63.62	$229K	147,539 direct	Filing · EDGAR
Jan 8, 2025	Sale under a 10b5-1 plan	−1,882	$66.10	$124K	145,784 direct	Filing · EDGAR
Jan 8, 2025	Grant or award from the company	+6,657			152,441 direct	Filing · EDGAR
Jan 8, 2025	Grant or award from the company Stock Option (right to buy)	+31,930			31,930 direct	Filing · EDGAR
Jan 7, 2025	Sale under a 10b5-1 plan	−2,444	$65.95	$161K	147,666 direct	Filing · EDGAR
May 17, 2024	Sale under a 10b5-1 plan	−5,945	$25.09	$149K	149,275 direct	Filing · EDGAR
May 14, 2024	Open-market or private sale	−7,857	$25.50	$200K	155,220 direct	Filing · EDGAR
May 13, 2024	Grant or award from the company	+14,518			163,077 direct	Filing · EDGAR
May 13, 2024	Grant or award from the company Stock Option (right to buy)	+71,160			71,160 direct	Filing · EDGAR
Jan 12, 2024	Sale under a 10b5-1 plan	−5,251	$28.63	$150K	148,559 direct	Filing · EDGAR
Jan 10, 2024	Sale under a 10b5-1 plan	−3,536	$28.90	$102K	153,810 direct	Filing · EDGAR
Jan 9, 2024	Sale under a 10b5-1 plan	−3,837	$29.25	$112K	157,346 direct	Filing · EDGAR
Jan 5, 2024	Open-market or private sale	−3,042	$29.21	$89K	161,183 direct	Filing · EDGAR
Jan 4, 2024	Grant or award from the company	+12,873			164,225 direct	Filing · EDGAR
Jan 4, 2024	Grant or award from the company Stock Option (right to buy)	+63,560			63,560 direct	Filing · EDGAR
Jun 13, 2023	Sale under a 10b5-1 plan	−8,981	$19.32	$174K	151,352 direct	Filing · EDGAR
May 17, 2023	Open-market or private sale	−2,448	$18.12	$44K	160,333 direct	Filing · EDGAR
May 16, 2023	Open-market or private sale	−1,521	$18.39	$28K	162,781 direct	Filing · EDGAR
May 15, 2023	Open-market or private sale	−2,847	$19.27	$55K	164,302 direct	Filing · EDGAR
May 11, 2023	Grant or award from the company	+31,662			167,149 direct	Filing · EDGAR
May 11, 2023	Grant or award from the company Common Stock	+146,220			146,220 direct	Filing · EDGAR
Jan 10, 2023	Open-market or private sale	−3,194	$17.99	$57K	135,487 direct	Filing · EDGAR
Jan 5, 2023	Open-market or private sale	−3,044	$19.75	$60K	131,083 direct	Filing · EDGAR

32 earlier transactions are in the filing list below.

Definium Therapeutics DFTX Director · filings 2026 to 2026

Date	Transaction	Shares	Held after	Source
Jun 11, 2026	Grant or award from the company	+3,555	3,555 direct	Filing · EDGAR
Jun 11, 2026	Grant or award from the company Stock Option (Right to Buy)	+14,620	14,620 direct	Filing · EDGAR
Jan 29, 2026	Grant or award from the company Stock Option (Right to Buy)	+50,000	50,000 direct	Filing · EDGAR

Landos Biopharma Director · filings 2022 to 2024

Date	Transaction	Shares	Held after	Source
May 23, 2024	Returned to the company Stock Option (right to buy)	−1,800	0 direct	Filing · EDGAR
May 23, 2024	Returned to the company Stock Option (right to buy)	−1,800	0 direct	Filing · EDGAR
May 23, 2024	Returned to the company Stock Option (right to buy)	−3,600	0 direct	Filing · EDGAR
May 23, 2023	Grant or award from the company Stock Option (right to buy)	+18,000	18,000 direct	Filing · EDGAR
Jun 7, 2022	Grant or award from the company Stock Option (right to buy)	+18,000	18,000 direct	Filing · EDGAR
Mar 8, 2022	Grant or award from the company Stock Option (right to buy)	+36,000	36,000 direct	Filing · EDGAR

All 78 Forms 3, 4, 5 and 144

Filed	Form	Company	Links
Aug 12, 2026	Form 4	INSMED INSM	Filing · EDGAR
Aug 10, 2026	Form 144	Could not read	EDGAR
Jun 15, 2026	Form 4	Definium Therapeutics DFTX	Filing · EDGAR
Jun 5, 2026	Form 4	INSMED INSM	Filing · EDGAR
Jun 3, 2026	Form 144	Could not read	EDGAR
May 15, 2026	Form 4	INSMED INSM	Filing · EDGAR
May 13, 2026	Form 144	Could not read	EDGAR
Apr 3, 2026	Form 4	INSMED INSM	Filing · EDGAR
Apr 1, 2026	Form 144	INSMED INSM	Filing · EDGAR
Feb 4, 2026	Form 4	INSMED INSM	Filing · EDGAR
Feb 3, 2026	Form 144	INSMED INSM	Filing · EDGAR
Jan 29, 2026	Form 4	Definium Therapeutics DFTX	Filing · EDGAR
Jan 29, 2026	Form 3	Definium Therapeutics DFTX	Filing · EDGAR
Jan 8, 2026	Form 4	INSMED INSM	Filing · EDGAR
Jan 8, 2026	Form 144	INSMED INSM	Filing · EDGAR
Jan 7, 2026	Form 144	INSMED INSM	Filing · EDGAR
Jan 6, 2026	Form 4	INSMED INSM	Filing · EDGAR
Jan 6, 2026	Form 144	INSMED INSM	Filing · EDGAR
Aug 21, 2025	Form 4	INSMED INSM	Filing · EDGAR
Aug 19, 2025	Form 144	INSMED INSM	Filing · EDGAR
Jun 18, 2025	Form 4	INSMED INSM	Filing · EDGAR
Jun 16, 2025	Form 144	INSMED INSM	Filing · EDGAR
Jun 4, 2025	Form 4	INSMED INSM	Filing · EDGAR
Jun 3, 2025	Form 144	INSMED INSM	Filing · EDGAR
May 19, 2025	Form 4	INSMED INSM	Filing · EDGAR
May 15, 2025	Form 4	INSMED INSM	Filing · EDGAR
May 14, 2025	Form 144	INSMED INSM	Filing · EDGAR
May 13, 2025	Form 144	INSMED INSM	Filing · EDGAR
Feb 12, 2025	Form 4	INSMED INSM	Filing · EDGAR
Feb 10, 2025	Form 144	INSMED INSM	Filing · EDGAR
Feb 7, 2025	Form 4	INSMED INSM	Filing · EDGAR
Feb 6, 2025	Form 144	INSMED INSM	Filing · EDGAR
Jan 16, 2025	Form 4	INSMED INSM	Filing · EDGAR
Jan 10, 2025	Form 144	INSMED INSM	Filing · EDGAR
Jan 10, 2025	Form 144	INSMED INSM	Filing · EDGAR
Jan 10, 2025	Form 4	INSMED INSM	Filing · EDGAR
Jan 8, 2025	Form 144	INSMED INSM	Filing · EDGAR
Jan 7, 2025	Form 144	INSMED INSM	Filing · EDGAR
May 23, 2024	Form 4	Landos Biopharma	Filing · EDGAR
May 17, 2024	Form 4	INSMED INSM	Filing · EDGAR
May 15, 2024	Form 4	INSMED INSM	Filing · EDGAR
May 14, 2024	Form 144	INSMED INSM	Filing · EDGAR
May 14, 2024	Form 144	INSMED INSM	Filing · EDGAR
Jan 12, 2024	Form 4	INSMED INSM	Filing · EDGAR
Jan 11, 2024	Form 4	INSMED INSM	Filing · EDGAR
Jan 5, 2024	Form 144	INSMED INSM	Filing · EDGAR
Jan 5, 2024	Form 4	INSMED INSM	Filing · EDGAR
Jun 15, 2023	Form 4	INSMED INSM	Filing · EDGAR
Jun 13, 2023	Form 144	INSMED INSM	Filing · EDGAR
May 24, 2023	Form 4	Landos Biopharma	Filing · EDGAR
May 17, 2023	Form 4	INSMED INSM	Filing · EDGAR
May 15, 2023	Form 144	INSMED INSM	Filing · EDGAR
May 15, 2023	Form 4	INSMED INSM	Filing · EDGAR
Jan 12, 2023	Form 4	INSMED INSM	Filing · EDGAR
Jan 6, 2023	Form 4	INSMED INSM	Filing · EDGAR
Nov 22, 2022	Form 4	INSMED INSM	Filing · EDGAR
Jun 9, 2022	Form 4	Landos Biopharma	Filing · EDGAR
May 18, 2022	Form 4	INSMED INSM	Filing · EDGAR
May 13, 2022	Form 4	INSMED INSM	Filing · EDGAR
Mar 10, 2022	Form 4	Landos Biopharma	Filing · EDGAR
Mar 10, 2022	Form 3	Landos Biopharma	Filing · EDGAR
Jan 13, 2022	Form 4	INSMED INSM	Filing · EDGAR
Jan 10, 2022	Form 4	INSMED INSM	Filing · EDGAR
Jan 7, 2022	Form 4	INSMED INSM	Filing · EDGAR
May 18, 2021	Form 4	INSMED INSM	Filing · EDGAR
May 14, 2021	Form 4	INSMED INSM	Filing · EDGAR
Jan 8, 2021	Form 4	INSMED INSM	Filing · EDGAR
Jan 6, 2021	Form 4	INSMED INSM	Filing · EDGAR
Jan 7, 2020	Form 4	INSMED INSM	Filing · EDGAR
Nov 20, 2019	Form 4	INSMED INSM	Filing · EDGAR
May 16, 2019	Form 4	INSMED INSM	Filing · EDGAR
Jan 7, 2019	Form 4	INSMED INSM	Filing · EDGAR
Nov 2, 2018	Form 4	INSMED INSM	Filing · EDGAR
Jan 8, 2018	Form 4	INSMED INSM	Filing · EDGAR
May 19, 2017	Form 4	INSMED INSM	Filing · EDGAR
Jan 9, 2017	Form 4	INSMED INSM	Filing · EDGAR
Oct 4, 2016	Form 4	INSMED INSM	Filing · EDGAR
Oct 4, 2016	Form 3	INSMED INSM	Filing · EDGAR

Every figure is as filed with the SEC on Forms 3, 4, 5 and 144. Holdings are the amounts reported after each person's latest filing at each company and can be out of date. Matching a Form 144 notice to Form 4 sales is SEC Tracker's inference from owner, company, dates and share counts, not something the filings state. Not investment advice. Not affiliated with the U.S. SEC.