There have been 50 recent insider transactions recorded for MannKind Corporation (MNKD), including 21 buys and 27 sells. Total insider buying was valued at $5.44M and total insider selling at $3.63M.
Notable insiders with recent activity include Thomson David, Tross Stuart A, Castagna Michael. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — MNKD
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-23 |
Thomson David |
EVP Genl Counsel & Secretary |
RSU Award |
217,000 |
$2.44 |
$529.48K |
217,000 |
| 2026-03-23 |
Tross Stuart A |
Chief People & Workpl Officer |
RSU Award |
217,000 |
$2.44 |
$529.48K |
217,000 |
| 2026-03-23 |
Castagna Michael |
Chief Executive Officer |
RSU Award |
782,000 |
$2.44 |
$1.91M |
782,000 |
| 2026-03-23 |
Prentiss Christopher B |
Chief Financial Officer |
RSU Award |
217,000 |
$2.44 |
$529.48K |
217,000 |
| 2026-03-23 |
Singh Sanjay R |
EVP Technical Operations |
RSU Award |
217,000 |
$2.44 |
$529.48K |
217,000 |
| 2026-03-23 |
Ahuja Ajay |
Chief Medical Officer |
RSU Award |
217,000 |
$2.44 |
$529.48K |
217,000 |
| 2026-03-10 |
Castagna Michael |
Chief Executive Officer |
Informative Buy |
100,000 |
$2.59 |
$259K |
2,575,911 |
| 2026-03-01 |
Tross Stuart A |
Chief People & Workpl Officer |
RSU Award |
15,290 |
$3.27 |
$50K |
1,000,297 |
| 2026-03-01 |
Castagna Michael |
Chief Executive Officer |
RSU Award |
15,290 |
$3.27 |
$50K |
2,475,911 |
| 2026-03-01 |
Hooper Anthony C |
Director |
RSU Award |
35,000 |
$3.27 |
$114.45K |
236,153 |
| 2026-03-01 |
Shannon James Samuel |
Director |
RSU Award |
12,000 |
$3.27 |
$39.24K |
64,635 |
| 2026-03-01 |
Prentiss Christopher B |
Chief Financial Officer |
RSU Award |
5,000 |
$3.27 |
$16.35K |
348,854 |
| 2026-02-26 |
Thomson David |
EVP Genl Counsel & Secretary |
RSU Award |
20,000 |
$4.55 |
$91K |
20,000 |
| 2026-02-26 |
Tross Stuart A |
Chief People & Workpl Officer |
RSU Award |
20,000 |
$4.55 |
$91K |
20,000 |
| 2026-02-26 |
Castagna Michael |
Chief Executive Officer |
RSU Award |
37,525 |
$1.42 |
$53.29K |
37,525 |
| 2026-02-26 |
Binder Steven B. |
Director |
RSU Award |
45,025 |
$1.47 |
$66.19K |
45,025 |
| 2026-01-08 |
Tross Stuart A |
Chief People & Workpl Officer |
Informative Sell |
47,006 |
$6.33 |
$297.55K |
985,007 |
| 2025-12-24 |
Castagna Michael |
Chief Executive Officer |
Gift (Given) |
44,171 |
- |
- |
2,460,621 |
| 2025-12-17 |
Castagna Michael |
Chief Executive Officer |
Option Exercise (Sell) |
50,000 |
$4.55 |
$227.5K |
- |
| 2025-12-16 |
Castagna Michael |
Chief Executive Officer |
Option Exercise (Sell) |
21,310 |
$4.55 |
$96.96K |
15,804 |
| 2025-12-12 |
Castagna Michael |
Chief Executive Officer |
Option Exercise (Sell) |
7,920 |
$4.55 |
$36.04K |
- |
| 2025-12-02 |
Thomson David |
EVP Genl Counsel & Secretary |
Option Exercise (Sell) |
87,780 |
$4.60 |
$403.79K |
- |
| 2025-12-02 |
Castagna Michael |
Chief Executive Officer |
Option Exercise (Sell) |
65,840 |
$4.55 |
$299.57K |
- |
| 2025-11-14 |
Singh Sanjay R |
EVP Technical Operations |
Informative Sell |
18,777 |
$5.03 |
$94.45K |
455,211 |
| 2025-11-11 |
Ahuja Ajay |
Chief Medical Officer |
RSU Award |
318,200 |
- |
- |
318,200 |
| 2025-10-31 |
Singh Sanjay R |
EVP Technical Operations |
Tax Withholding of RSU |
17,071 |
$5.59 |
$95.43K |
473,988 |
| 2025-09-29 |
Ahuja Ajay |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-09-16 |
Tross Stuart A |
Chief People & Workpl Officer |
Informative Sell |
47,000 |
$5.34 |
$250.98K |
1,032,013 |
| 2025-08-05 |
Tross Stuart A |
Chief People & Workpl Officer |
RSU Award |
12,755 |
$3.92 |
$50K |
1,079,013 |
| 2025-07-16 |
Thomson David |
EVP Genl Counsel & Secretary |
Informative Sell |
7,466 |
$3.94 |
$29.42K |
841,719 |
| 2025-07-16 |
Binder Steven B. |
Director |
Informative Sell |
75,367 |
$3.94 |
$296.95K |
830,508 |
| 2025-07-15 |
Blank Burkhard |
EVP Chief Medical Officer |
Tax Withholding of RSU |
9,556 |
$3.85 |
$36.79K |
460,791 |
| 2025-07-15 |
Thomson David |
EVP Genl Counsel & Secretary |
Tax Withholding of RSU |
30,361 |
$3.85 |
$116.89K |
849,185 |
| 2025-07-15 |
Sabella Lauren M |
EVP Operations |
Tax Withholding of RSU |
11,896 |
$3.85 |
$45.8K |
349,841 |
| 2025-07-15 |
Tross Stuart A |
Chief People & Workpl Officer |
Tax Withholding of RSU |
28,057 |
$3.85 |
$108.02K |
1,066,258 |
| 2025-07-15 |
Castagna Michael |
Chief Executive Officer |
Tax Withholding of RSU |
111,275 |
$3.85 |
$428.41K |
2,504,792 |
| 2025-07-15 |
Binder Steven B. |
Director |
Tax Withholding of RSU |
19,383 |
$3.85 |
$74.62K |
905,875 |
| 2025-07-15 |
Prentiss Christopher B |
Chief Financial Officer |
Tax Withholding of RSU |
11,540 |
$3.85 |
$44.43K |
343,854 |
| 2025-07-15 |
Singh Sanjay R |
EVP Technical Operations |
Tax Withholding of RSU |
15,450 |
$3.85 |
$59.48K |
491,059 |
| 2025-06-23 |
Marasco Dominic |
Pres, Endocrine Business Unit |
RSU Award |
1,000,000 |
- |
- |
1,000,000 |
| 2025-06-10 |
Binder Steven B. |
Director |
Informative Sell |
64,085 |
$4.00 |
$256.34K |
925,258 |
| 2025-05-27 |
Blank Burkhard |
EVP Chief Medical Officer |
Tax Withholding of RSU |
15,630 |
$4.12 |
$64.4K |
465,124 |
| 2025-05-20 |
Thomson David |
EVP Genl Counsel & Secretary |
Informative Sell |
2,345 |
$4.41 |
$10.34K |
879,546 |
| 2025-05-20 |
Binder Steven B. |
Director |
Informative Sell |
12,078 |
$4.40 |
$53.14K |
989,343 |
| 2025-05-19 |
Thomson David |
EVP Genl Counsel & Secretary |
Tax Withholding of RSU |
9,536 |
$4.37 |
$41.67K |
881,891 |
| 2025-05-19 |
Tross Stuart A |
Chief People & Workpl Officer |
Tax Withholding of RSU |
6,147 |
$4.37 |
$26.86K |
1,090,427 |
| 2025-05-19 |
Castagna Michael |
Chief Executive Officer |
Tax Withholding of RSU |
26,114 |
$4.37 |
$114.12K |
2,612,934 |
| 2025-05-19 |
Binder Steven B. |
Director |
Tax Withholding of RSU |
5,190 |
$4.37 |
$22.68K |
1,001,421 |
| 2025-05-14 |
Binder Steven B. |
Director |
RSU Award |
52,854 |
- |
- |
52,854 |
| 2025-05-14 |
Consiglio Ronald J |
Director |
RSU Award |
52,854 |
- |
- |
52,854 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
