MNKD MannKind Corporation
MannKind Corporation (MNKD) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 100% planned / 0% discretionary
Largest single sale: $823.1K.
Where they traded
Last open-market purchase: March 10, 2026 , by Castagna Michael .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Binder Steven B. | Director | Sell 10b5-1 | 39,051 | $4.06 | $158.5K | 785,867 −4.7% of holding | |
| Binder Steven B. | Director | Sell 10b5-1 | 52,485 | $4.06 | $213.1K | 824,918 −6% of holding | |
| Thomson David | EVP Genl Counsel & Secretary | Sell 10b5-1 | 24,109 | $4.05 | $97.6K | 797,554 −2.9% of holding | |
| Binder Steven B. | Director | Sell 10b5-1 | 16,940 | $3.29 | $55.7K | 808,008 −2.1% of holding | |
| Thomson David | EVP Genl Counsel & Secretary | Sell 10b5-1 | 3,033 | $3.29 | $10.0K | 826,299 −0.4% of holding | |
| Castagna Michael | Chief Executive Officer | Buy | 100,000 | $2.59 | $259.0K | 2,575,911 | |
| Tross Stuart A | Chief People & Workpl Officer | Sell 10b5-1 | 47,006 | $6.33 | $297.5K | 985,007 −4.6% of holding | |
| Castagna Michael | Chief Executive Officer | Sell 10b5-1 | 65,804 | $6.01 | $395.5K | 2,504,792 −2.6% of holding | |
| Castagna Michael | Chief Executive Officer | Sell 10b5-1 | 21,310 | $6.00 | $127.9K | 2,504,792 −0.8% of holding | |
| Castagna Michael | Chief Executive Officer | Sell 10b5-1 | 20,806 | $6.00 | $124.8K | 2,504,792 −0.8% of holding | |
| Thomson David | EVP Genl Counsel & Secretary | Sell 10b5-1 | 147,780 | $5.57 | $823.1K | 841,719 −14.9% of holding | |
| Castagna Michael | Chief Executive Officer | Sell 10b5-1 | 107,920 | $5.57 | $601.1K | 2,504,792 −4.1% of holding | |
| Singh Sanjay R | EVP Technical Operations | Sell 10b5-1 | 18,777 | $5.03 | $94.4K | 455,211 −4% of holding | |
| Tross Stuart A | Chief People & Workpl Officer | Sell 10b5-1 | 47,000 | $5.34 | $251.0K | 1,032,013 −4.4% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.