MANNKIND (MNKD) stock: insider trades, news & valuation
Net sellingShare price and insider trades
MANNKIND insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $259K and 5 sold $3.3M of MNKD stock on the open market.
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MNKD insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $726K | 5 |
| Q2 2026 | — | 0 | $66K | 2 |
| Q1 2026 | $259K | 1 | $298K | 1 |
| Q4 2025 | — | 0 | $2.2M | 6 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 MANNKIND CORP insider reported open-market purchases totaling $259K, while 5 insiders reported sales totaling $3.3M. 14 of 14 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 28SEC | Steven B. BinderDirector | Sell Plan | 39,051713,258 held (−5%) | $3.29 | $128K | +0.0% | — |
| Sep 14SEC | Steven B. BinderDirector | Sell Plan | 33,558752,309 held (−4%) | $3.81 | $128K | -13.6% | — |
| Aug 10SEC | Steven B. BinderDirector | Sell Plan | 39,051785,867 held (−5%) | $4.06 | $159K | -19.0% | — |
| Jul 17SEC | Steven B. BinderDirector | Sell Plan | 52,485824,918 held (−6%) | $4.06 | $213K | -19.0% | — |
| Jul 17SEC | David ThomsonEvp Genl Counsel & Secretary | Sell Plan | 24,109797,554 held (−3%) | $4.05 | $98K | -18.8% | — |
| May 13SEC | Steven B. BinderDirector | Sell Plan | 16,940808,008 held (−2%) | $3.29 | $56K | +0.0% | — |
| May 13SEC | David ThomsonEvp Genl Counsel & Secretary | Sell Plan | 3,033826,299 held (−0%) | $3.29 | $10K | +0.0% | — |
| Mar 10SEC | Michael CastagnaCEO | Buy | 100,0002,575,911 held (+4%) | $2.59 | $259K | +27.0% | — |
| Jan 9SEC | Stuart A TrossChief People & Workpl Officer | Sell Plan | 47,006985,007 held (−5%) | $6.33 | $298K | -48.0% | — |
| Dec 19SEC | Michael CastagnaCEO | Sell Plan | 65,8042,504,792 held (−3%) | $6.01 | $395K | -45.3% | — |
| Dec 16SEC | Michael CastagnaCEO | Sell Plan | 21,3102,504,792 held (−1%) | $6.00 | $128K | -45.2% | — |
| Dec 16SEC | Michael CastagnaCEO | Sell Plan | 20,8062,504,792 held (−1%) | $6.00 | $125K | -45.2% | — |
| Dec 4SEC | David ThomsonEvp Genl Counsel & Secretary | Sell Plan | 147,780841,719 held (−15%) | $5.57 | $823K | -40.9% | — |
| Dec 4SEC | Michael CastagnaCEO | Sell Plan | 107,9202,504,792 held (−4%) | $5.57 | $601K | -40.9% | — |
| Nov 14SEC | Sanjay R SinghEvp Technical Operations | Sell Plan | 18,777455,211 held (−4%) | $5.03 | $94K | -34.6% | — |
Insiders at MANNKIND CORP
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Michael CastagnaCEO | $259K | $1.2M | Mar 10, 2026 | — |
| David ThomsonEvp Genl Counsel & Secretary | — | $931K | Jul 17, 2026 | — |
| Steven B. BinderDirector | — | $684K | Sep 28, 2026 | — |
| Stuart A TrossChief People & Workpl Officer | — | $298K | Jan 9, 2026 | — |
| Sanjay R SinghEvp Technical Operations | — | $94K | Nov 14, 2025 | — |
MNKD stock: common questions
Are MANNKIND CORP insiders buying MNKD stock?
In the past 12 months, 1 insiders reported open-market purchases of MNKD worth $259K. The latest was CEO Michael Castagna bought $259K of MNKD at $2.59 — first open-market purchase in our records.
Are MANNKIND CORP insiders selling MNKD stock?
5 insiders reported sales worth $3.3M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is MNKD's 52-week range?
Over the past year MNKD has traded between $2.28 and $6.21. It last closed at $3.29 on Oct 9, 2026.