MPLT MapLight Therapeutics, Inc.
$13.00
MapLight Therapeutics, Inc. (MPLT) 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.
Insider signal
Bullish
Insiders bought more than they sold over this window — uncommon at any size.
Cluster activity
1 buyer in the last 30 days
2 buyers in the last 90 days
6 sellers in the last 90 days
Insiders buying
2
6 transactions
Insiders selling
8
125 transactions
Purchases
$65.5M
5,624,845 shares
Sales
$27.6M
895,156 shares
Net activity
$37.9M
purchases less sales
How much of that selling was preplanned? 63% planned / 37% discretionary
10b5-1 plan sales
$17.3M
72 transactions · 604,395 shares
Discretionary sales
$10.3M
53 transactions · 290,761 shares
Largest single sale: $3.2M.
Where they traded
Buy
Sell
Dot area is proportional to transaction value.
Last open-market purchase: August 14, 2026 , by Catalyst4, Inc. .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Catalyst4, Inc. | 10% Owner | Buy | 4,400,000 | $11.38 | $50.1M | 25,306,689 | |
| Lillie James Woodruff | Chief Scientific Officer | Sell 10b5-1 | 22,082 | $12.54 | $276.9K | 202,380 −9.8% of holding | |
| Catalyst4, Inc. | 10% Owner | Buy | 1,000,000 | $13.00 | $13.0M | 20,906,689 | |
| Catalyst4, Inc. | 10% Owner | Buy | 3,000 | $12.63 | $37.9K | 19,906,689 | |
| Catalyst4, Inc. 2 fills | 10% Owner | Buy | 206,225 | $11.04 | $2.3M | 19,903,689 | |
| Cox Troy | Director | Buy | 15,620 | $9.52 | $148.7K | 15,620 | |
| GILLIS JONATHAN 3 fills | CAO and Interim CFO | Sell 10b5-1 | 18,469 | $37.60 | $694.5K | 162,109 −10.2% of holding | |
| Kreitzer Anatol 3 fills | Chief Discovery Officer | Sell 10b5-1 | 17,173 | $37.60 | $645.7K | 189,246 −8.3% of holding | |
| Kroeger Christopher A. | Chief Executive Officer | Sell | 16,779 | $37.90 | $635.9K | 1,246,455 −1.3% of holding | |
| Foff Erin Pennock | Chief Medical Officer | Sell | 3,656 | $37.90 | $138.6K | 298,901 −1.2% of holding | |
| Lillie James Woodruff | Chief Scientific Officer | Sell | 2,077 | $37.90 | $78.7K | 224,462 −0.9% of holding | |
| Hanson Kristopher | General Counsel | Sell | 1,130 | $37.90 | $42.8K | 145,823 −0.8% of holding | |
| Kroeger Christopher A. 3 fills | Chief Executive Officer | Sell | 69,082 | $36.79 | $2.5M | 1,291,417 −5.1% of holding | |
| Foff Erin Pennock 3 fills | Chief Medical Officer | Sell | 15,047 | $36.77 | $553.3K | 308,441 −4.7% of holding | |
| Kreitzer Anatol 2 fills | Chief Discovery Officer | Sell | 9,056 | $36.80 | $333.2K | 193,671 −4.5% of holding | |
| Lillie James Woodruff 3 fills | Chief Scientific Officer | Sell | 8,547 | $36.79 | $314.4K | 230,077 −3.6% of holding | |
| GILLIS JONATHAN 2 fills | CAO and Interim CFO | Sell | 8,455 | $36.80 | $311.1K | 164,185 −4.9% of holding | |
| Hanson Kristopher 3 fills | General Counsel | Sell | 8,118 | $36.78 | $298.6K | 150,295 −5.1% of holding | |
| Kroeger Christopher A. 3 fills | Chief Executive Officer | Sell | 61,778 | $36.69 | $2.3M | 1,375,144 −4.3% of holding | |
| Foff Erin Pennock 2 fills | Chief Medical Officer | Sell 10b5-1 | 15,000 | $36.62 | $549.3K | 338,904 −4.2% of holding | |
| Foff Erin Pennock 3 fills | Chief Medical Officer | Sell | 13,455 | $36.66 | $493.3K | 326,594 −4% of holding | |
| GILLIS JONATHAN 2 fills | CAO and Interim CFO | Sell | 10,055 | $36.51 | $367.1K | 175,863 −5.4% of holding | |
| Kreitzer Anatol 2 fills | Chief Discovery Officer | Sell | 10,055 | $36.49 | $366.9K | 205,645 −4.7% of holding | |
| Lillie James Woodruff 3 fills | Chief Scientific Officer | Sell | 7,643 | $36.70 | $280.5K | 240,491 −3.1% of holding | |
| Hanson Kristopher 3 fills | General Counsel | Sell | 7,260 | $36.70 | $266.4K | 160,184 −4.3% of holding | |
| Kroeger Christopher A. 2 fills | Chief Executive Officer | Sell 10b5-1 | 118,235 | $27.19 | $3.2M | 1,394,292 −7.8% of holding | |
| Kroeger Christopher A. 4 fills | Chief Executive Officer | Sell 10b5-1 | 13,980 | $30.11 | $421.0K | 1,525,967 −0.9% of holding | |
| Hanson Kristopher 4 fills | General Counsel | Sell 10b5-1 | 13,917 | $30.13 | $419.3K | 175,964 −7.3% of holding | |
| Kroeger Christopher A. 3 fills | Chief Executive Officer | Sell 10b5-1 | 34,411 | $27.69 | $952.8K | 1,531,096 −2.2% of holding | |
| Kroeger Christopher A. 2 fills | Chief Executive Officer | Sell 10b5-1 | 20,100 | $28.65 | $575.8K | 1,565,940 −1.3% of holding | |
| Foff Erin Pennock 2 fills | Chief Medical Officer | Sell 10b5-1 | 4,438 | $28.54 | $126.6K | 346,176 −1.3% of holding | |
| Lillie James Woodruff | Chief Scientific Officer | Sell 10b5-1 | 721 | $28.28 | $20.4K | 242,729 −0.3% of holding | |
| Lillie James Woodruff 2 fills | Chief Scientific Officer | Sell 10b5-1 | 24,811 | $28.76 | $713.6K | 259,871 −8.7% of holding | |
| Foff Erin Pennock 2 fills | Chief Medical Officer | Sell 10b5-1 | 24,052 | $28.76 | $691.7K | 366,397 −6.2% of holding | |
| Kroeger Christopher A. 2 fills | Chief Executive Officer | Sell 10b5-1 | 23,701 | $28.76 | $681.6K | 1,596,423 −1.5% of holding | |
| Setia Vishwas 2 fills | Chief Financial Officer | Sell 10b5-1 | 10,564 | $28.24 | $298.3K | 358,324 −2.9% of holding | |
| Lillie James Woodruff 2 fills | Chief Scientific Officer | Sell 10b5-1 | 11,095 | $28.20 | $312.8K | 269,224 −4% of holding | |
| Setia Vishwas 2 fills | Chief Financial Officer | Sell 10b5-1 | 10,903 | $28.20 | $307.4K | 367,788 −2.9% of holding | |
| Foff Erin Pennock 2 fills | Chief Medical Officer | Sell 10b5-1 | 10,576 | $28.20 | $298.2K | 375,480 −2.7% of holding | |
| Kroeger Christopher A. 2 fills | Chief Executive Officer | Sell 10b5-1 | 10,472 | $28.20 | $295.3K | 1,605,449 −0.6% of holding | |
| Lillie James Woodruff 4 fills | Chief Scientific Officer | Sell 10b5-1 | 15,801 | $27.96 | $441.8K | 285,907 −5.2% of holding | |
| Foff Erin Pennock 4 fills | Chief Medical Officer | Sell 10b5-1 | 15,652 | $27.96 | $437.6K | 391,597 −3.8% of holding | |
| Kroeger Christopher A. 4 fills | Chief Executive Officer | Sell 10b5-1 | 15,571 | $27.96 | $435.4K | 1,621,428 −1% of holding | |
| Setia Vishwas 4 fills | Chief Financial Officer | Sell 10b5-1 | 14,904 | $28.11 | $418.9K | 387,824 −3.7% of holding | |
| Hanson Kristopher 4 fills | General Counsel | Sell 10b5-1 | 13,917 | $27.89 | $388.2K | 181,135 −7.1% of holding | |
| GILLIS JONATHAN 2 fills | CAAO and PAO | Sell 10b5-1 | 17,935 | $30.35 | $544.3K | 181,919 −9% of holding | |
| GILLIS JONATHAN 3 fills | CAAO and PAO | Sell 10b5-1 | 51,900 | $29.74 | $1.5M | 243,140 −17.6% of holding | |
| Kreitzer Anatol 3 fills | Chief Discovery Officer | Sell 10b5-1 | 45,422 | $29.66 | $1.3M | 248,266 −15.5% of holding | |
| Kroeger Christopher A. 2 fills | Chief Executive Officer | Sell | 10,052 | $27.37 | $275.1K | 1,638,139 −0.6% of holding | |
| Lillie James Woodruff 2 fills | Chief Scientific Officer | Sell | 2,783 | $27.37 | $76.2K | 297,254 −0.9% of holding | |
| Foff Erin Pennock 2 fills | Chief Medical Officer | Sell | 1,169 | $27.37 | $32.0K | 401,658 −0.3% of holding | |
| Hanson Kristopher 2 fills | General Counsel | Sell | 298 | $27.37 | $8.2K | 190,390 −0.2% of holding | |
| Setia Vishwas 2 fills | Chief Financial Officer | Sell | 116 | $27.37 | $3.2K | 392,714 −0% of holding | |
| Kroeger Christopher A. | Chief Executive Officer | Sell | 9,135 | $26.93 | $246.0K | 1,640,616 −0.6% of holding | |
| Malenka Robert C. | Director | Sell 10b5-1 | 8,593 | $26.90 | $231.2K | 316,466 −2.6% of holding | |
| GILLIS JONATHAN | CAAO and PAO | Sell | 3,590 | $26.61 | $95.5K | 251,054 −1.4% of holding | |
| Kreitzer Anatol | Chief Discovery Officer | Sell | 3,316 | $26.61 | $88.2K | 256,612 −1.3% of holding | |
| Setia Vishwas | Chief Financial Officer | Sell | 2,806 | $26.87 | $75.4K | 392,743 −0.7% of holding | |
| Foff Erin Pennock | Chief Medical Officer | Sell | 2,044 | $26.84 | $54.9K | 401,946 −0.5% of holding | |
| Lillie James Woodruff | Chief Scientific Officer | Sell | 1,730 | $26.82 | $46.4K | 297,940 −0.6% of holding | |
| Hanson Kristopher | General Counsel | Sell | 1,529 | $26.80 | $41.0K | 190,463 −0.8% 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.