MannKind Corporation Insider Trading

MNKD

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Last 12 months

Insiders bought 259K and sold $3.26M on the open market.

All of the selling was scheduled in advance under 10b5-1 plans.

Net open-market

−$3M

1 buy · 13 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

1 / 5

executives and directors

Last open-market buy

Mar 2026

Mar 10, 2026

Get an email when MNKD's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 25	Steven B. Binder Director	Sold10b5-1 plan	39,051	$3.29	128K	5.2%	Form 4
Sep 10	Steven B. Binder Director	Sold10b5-1 plan	33,558	$3.81	128K	4.3%	Form 4
Aug 7	Steven B. Binder Director	Sold10b5-1 plan	39,051	$4.06	159K	4.7%	Form 4
Jul 17	David Thomson EVP Genl Counsel & Secretary	Sold10b5-1 plan	24,109	$4.05	98K	2.9%	Form 4
Jul 17	Steven B. Binder Director	Sold10b5-1 plan	52,485	$4.06	213K	6.0%	Form 4
May 12	Steven B. Binder Director	Sold10b5-1 plan	16,940	$3.29	56K	2.1%	Form 4
May 12	David Thomson EVP Genl Counsel & Secretary	Sold10b5-1 plan	3,033	$3.29	10K	0.4%	Form 4
Mar 10	Michael Castagna Chief Executive Officer	Bought	100,000	$2.59	259K	4.0%	Form 4
Jan 8	Stuart A Tross Chief People & Workpl Officer	Sold10b5-1 plan	47,006	$6.33	298K	4.6%	Form 4
Dec 17, 2025	Michael Castagna Chief Executive Officer	Sold10b5-1 plan	65,804	$6.01	395K	2.6%	Form 4
Dec 12, 2025 – Dec 16, 2025	Michael Castagna Chief Executive Officer	Sold10b5-1 plan 2 parts	42,116	$6.00 average	253K	1.7%	Form 4
Dec 2, 2025	Michael Castagna Chief Executive Officer	Sold10b5-1 plan	107,920	$5.57	601K	4.1%	Form 4
Dec 2, 2025	David Thomson EVP Genl Counsel & Secretary	Sold10b5-1 plan	147,780	$5.57	823K	15%	Form 4
Nov 14, 2025	Sanjay R Singh EVP Technical Operations	Sold10b5-1 plan	18,777	$5.03	94K	4.0%	Form 4
Sep 16, 2025	Stuart A Tross Chief People & Workpl Officer	Sold10b5-1 plan	47,000	$5.34	251K	4.4%	Form 4
Jul 16, 2025	Steven B. Binder Director	Sold10b5-1 plan	75,367	$3.94	297K	8.3%	Form 4
Jul 16, 2025	David Thomson EVP Genl Counsel & Secretary	Sold10b5-1 plan	7,466	$3.94	29K	0.9%	Form 4
Jun 10, 2025	Steven B. Binder Director	Sold10b5-1 plan	64,085	$4.00	256K	6.5%	Form 4
May 20, 2025	Steven B. Binder Director	Sold10b5-1 plan	12,078	$4.40	53K	1.2%	Form 4
May 20, 2025	David Thomson EVP Genl Counsel & Secretary	Sold10b5-1 plan	2,345	$4.41	10K	0.3%	Form 4
May 13, 2025	David Thomson EVP Genl Counsel & Secretary	Sold10b5-1 plan	32,179	$4.68	151K	3.5%	Form 4
May 13, 2025	Steven B. Binder Director	Sold10b5-1 plan	80,144	$4.69	376K	7.4%	Form 4
Nov 22, 2024	Steven B. Binder Director	Sold10b5-1 plan	67,536	$6.89	465K	5.9%	Form 4
Nov 15, 2024	Steven B. Binder Director	Sold10b5-1 plan	67,539	$6.76	457K	5.9%	Form 4
Nov 6, 2024	Stuart A Tross Chief People & Workpl Officer	Sold10b5-1 plan	55,000	$7.34	404K	5.4%	Form 4

Sep 2510b5-1 plan
Steven B. Binder
Director · sold 39,051 at $3.29
128K
5.2% of stake
Sep 1010b5-1 plan
Steven B. Binder
Director · sold 33,558 at $3.81
128K
4.3% of stake
Aug 710b5-1 plan
Steven B. Binder
Director · sold 39,051 at $4.06
159K
4.7% of stake
Jul 1710b5-1 plan
David Thomson
EVP Genl Counsel & Secretary · sold 24,109 at $4.05
98K
2.9% of stake
Jul 1710b5-1 plan
Steven B. Binder
Director · sold 52,485 at $4.06
213K
6.0% of stake
May 1210b5-1 plan
Steven B. Binder
Director · sold 16,940 at $3.29
56K
2.1% of stake
May 1210b5-1 plan
David Thomson
EVP Genl Counsel & Secretary · sold 3,033 at $3.29
10K
0.4% of stake
Mar 10
Michael Castagna
Chief Executive Officer · bought 100,000 at $2.59
259K
4.0% of stake
Jan 810b5-1 plan
Stuart A Tross
Chief People & Workpl Officer · sold 47,006 at $6.33
298K
4.6% of stake
Dec 17, 202510b5-1 plan
Michael Castagna
Chief Executive Officer · sold 65,804 at $6.01
395K
2.6% of stake
Dec 12, 2025 – Dec 16, 202510b5-1 plan
Michael Castagna
Chief Executive Officer · sold 42,116 at avg $6.00
253K
1.7% of stake
Dec 2, 202510b5-1 plan
Michael Castagna
Chief Executive Officer · sold 107,920 at $5.57
601K
4.1% of stake
Dec 2, 202510b5-1 plan
David Thomson
EVP Genl Counsel & Secretary · sold 147,780 at $5.57
823K
15% of stake
Nov 14, 202510b5-1 plan
Sanjay R Singh
EVP Technical Operations · sold 18,777 at $5.03
94K
4.0% of stake
Sep 16, 202510b5-1 plan
Stuart A Tross
Chief People & Workpl Officer · sold 47,000 at $5.34
251K
4.4% of stake
Jul 16, 202510b5-1 plan
Steven B. Binder
Director · sold 75,367 at $3.94
297K
8.3% of stake
Jul 16, 202510b5-1 plan
David Thomson
EVP Genl Counsel & Secretary · sold 7,466 at $3.94
29K
0.9% of stake
Jun 10, 202510b5-1 plan
Steven B. Binder
Director · sold 64,085 at $4.00
256K
6.5% of stake
May 20, 202510b5-1 plan
Steven B. Binder
Director · sold 12,078 at $4.40
53K
1.2% of stake
May 20, 202510b5-1 plan
David Thomson
EVP Genl Counsel & Secretary · sold 2,345 at $4.41
10K
0.3% of stake
May 13, 202510b5-1 plan
David Thomson
EVP Genl Counsel & Secretary · sold 32,179 at $4.68
151K
3.5% of stake
May 13, 202510b5-1 plan
Steven B. Binder
Director · sold 80,144 at $4.69
376K
7.4% of stake
Nov 22, 202410b5-1 plan
Steven B. Binder
Director · sold 67,536 at $6.89
465K
5.9% of stake
Nov 15, 202410b5-1 plan
Steven B. Binder
Director · sold 67,539 at $6.76
457K
5.9% of stake
Nov 6, 202410b5-1 plan
Stuart A Tross
Chief People & Workpl Officer · sold 55,000 at $7.34
404K
5.4% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch MNKD, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

MNKD is in 38 US ETFs. The largest of them, with MNKD's weight in each:

Spot a number that looks wrong? Check it in MNKD's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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