MarketPeel
Insider Trading Intelligence
JS

James Samuel Shannon

MNKD
DIRECTOR · MANNKIND CORP · CIK 0001485417
FILING MIX · LIFETIME100%/0%
BUYS
17
SELLS
0
TOTAL VALUE
$131.3K
COMPANIES
2
ACTIVE SINCE
May 2020
HOLDINGS NOW
21,556
AVG SELL PX
TRADE KIND
SHOWING 17 / 17
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 5 pending
Forward-return performance of every backtestable P/S trade by James Samuel Shannon, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d3+0.00%-1.68%+0.93%-2.61%-2.30%
14d3+33.33%+0.65%+3.76%-3.11%-3.39%
30d3+66.67%+3.73%+6.45%-2.73%+2.84%
60d3+66.67%+1.67%+7.22%-2.24%-2.24%
90d3+100.00%+8.41%+11.33%-2.92%-0.04%
180d3(1 pending)+0.00%-1.49%+13.52%-15.02%-15.02%
1y3(1 pending)+0.00%-14.19%+25.41%-39.59%-39.59%
2y3(3 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MNKD · 16,556 shares · as of May 20, 2026
022,05944,11866,17688,235202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 17 buys / 0 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
5,0005,000Jun 11, 2026Jun 12, 2026View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
16,55616,556May 20, 2026May 22, 2026View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
82,78182,781May 20, 2026May 22, 2026View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASE
5,000$8.79$44.0K10,000Mar 26, 2026Mar 30, 2026View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
12,000$3.27$39.2K64,635Mar 1, 2026Mar 3, 2026View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASE
25,000$0.69$17.2K70,000Jun 17, 2025Jun 18, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASE
45,000$0.69$30.9K45,000Jun 16, 2025Jun 18, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
31,00031,000Jun 11, 2025Jun 12, 2025View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
52,85452,854May 14, 2025May 16, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
50,00050,000Jun 13, 2024Jun 17, 2024View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
35,04735,047May 15, 2024May 17, 2024View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
47,39347,393May 25, 2023May 26, 2023View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
45,04545,045May 10, 2022May 12, 2022View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
33,86033,860May 20, 2021May 20, 2021View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
11,33811,338May 20, 2021May 20, 2021View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
38,76038,760May 21, 2020May 26, 2020View →
MNKD
MANNKIND CORP
PURCHASEGRANT
Stock grant
88,23588,235May 21, 2020May 26, 2020View →
Other insiders · MNKD
Loading peer insiders…
About this filer
CIK 0001485417
ROLE
Director
PRIMARY
MNKD
COMPANIES
2
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001485417DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback