Mark James Litton is Chief Business Officer at ALDER BIOPHARMACEUTICALS INC (ALDR). They have made 11 open-market trades across 3 companies since 2014, most recently 2026-03-04.
CIK 0001604834
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ALDR | 102,189 | $1.9M |
| ATHA | 43,414 | $293K |
| LONA | 57,926 | — |
| Total | $2.2M |
Shares reported on the most recent Form 4, priced at the 2026-03-05 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| LONA | SELL | 2026-03-04 | 2026-03-05 | $5.37 | $28K | N/A | N/A | N/A |
| ATHA | SELL | 2026-01-02 | 2026-01-05 | $6.88 | $18K | N/A | N/A | N/A |
| ATHA | SELL | 2025-07-01 | 2025-07-02 | $0.29 | $7K | +34.3% | +25.5% | +40.3% |
| ATHA | SELL | 2025-01-02 | 2025-01-03 | $0.56 | $14K | -10.6% | -15.8% | -56.2% |
| ATHA | SELL | 2024-09-05 | 2024-09-05 | $0.57 | $3K | -12.5% | -22.7% | +12.1% |
| ATHA | SELL | 2024-01-05 | 2024-02-16 | $2.91 | $14K | +4.6% | -32.3% | -26.4% |
| ATHA | SELL | 2022-06-23 | 2022-06-24 | $2.69 | $21K | +35.4% | +18.6% | +19.7% |
| ALDR | SELL · 10b5-1 | 2018-06-01 | 2018-06-05 | $17.84 | $405K | -6.4% | -10.6% | -4.0% |
| ALDR | SELL | 2017-11-13 | 2017-11-15 | $10.80 | $357K | -0.5% | +3.4% | +27.9% |
| ALDR | SELL | 2017-10-16 | 2017-10-18 | $12.33 | $407K | -3.0% | -8.2% | +46.3% |
| ALDR | SELL · 10b5-1 | 2017-01-18 | 2017-01-20 | $23.10 | $35K | -0.5% | +6.9% | -1.2% |
| ALDR | SELL · 10b5-1 | 2017-01-05 | 2017-01-09 | $23.01 | $219K | -6.3% | +5.8% | -12.7% |
| ALDR | SELL · 10b5-1 | 2016-10-17 | 2016-10-19 | $27.50 | $55K | -14.2% | +1.8% | -23.7% |
| ALDR | SELL · 10b5-1 | 2016-06-13 | 2016-06-15 | $28.93 | $171K | -18.2% | -7.7% | +11.1% |
| ALDR | SELL · 10b5-1 | 2016-05-27 | 2016-06-01 | $30.05 | $751K | -3.0% | -13.2% | +10.8% |
| ALDR | SELL · 10b5-1 | 2016-01-04 | 2016-01-06 | $31.40 | $785K | -9.8% | -28.8% | -22.2% |
| ALDR | SELL · 10b5-1 | 2015-10-01 | 2015-10-05 | $32.26 | $242K | -19.9% | -2.2% | -2.2% |
| ALDR | SELL · 10b5-1 | 2015-07-01 | 2015-07-06 | $51.10 | $383K | -19.9% | -2.2% | -2.2% |
| ALDR | SELL | 2015-06-04 | 2015-06-08 | $44.27 | $1.1M | -19.9% | -2.2% | -2.2% |
| ALDR | SELL · 10b5-1 | 2015-04-01 | 2015-04-03 | $27.41 | $206K | -19.9% | -2.2% | -2.2% |
| ALDR | SELL · 10b5-1 | 2015-01-26 | 2015-01-28 | $28.18 | $211K | -19.9% | -2.2% | -2.2% |
| ALDR | SELL | 2014-11-20 | 2014-11-24 | $15.63 | $469K | -19.9% | -2.2% | -2.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.