MILLENNIUM MANAGEMENT LLC
SEC Form 4 insider trading activity
MILLENNIUM MANAGEMENT LLC has filed 3 SEC Form 4 filings (51 transaction rows) across 1 company, with disclosures dating back to 2026. 3 of those filings fall inside the rolling window. Most recent filing: May 15, 2026.
On the most recent filing, MILLENNIUM MANAGEMENT LLC is listed as 10% Owner at Sensei Biotherapeutics, Inc. Inside the rolling window, MILLENNIUM MANAGEMENT LLC reported 8 open-market purchases totaling $1.3M in SNSE and 8 open-market sales totaling $704K in SNSE. The largest disclosed transaction in the window is a purchase of 15,321 SNSE shares on Mar 27, 2026, worth $408K.
Companies traded
Other insiders at SNSE
Insider Buying
$1.3M
reported purchases (SEC code P)
Insider Selling
$704K
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| SNSE | 10% Owner | Purchase | 2,003 | $70K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 7,666 | $246K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 1,104 | $34K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 1,259 | $39K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 1,108 | $37K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 8,151 | $253K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 5,731 | $164K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 1,857 | $52K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 15,321 | $408K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 505 | $14K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 9,533 | $246K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 888 | $24K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 6,005 | $169K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 1,591 | $41K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Purchase | 6,175 | $213K | May 15 | SEC ↗ | |
| SNSE | 10% Owner | Sale | 1,150 | $36K | May 15 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has MILLENNIUM MANAGEMENT LLC made?
MILLENNIUM MANAGEMENT LLC has filed 3 SEC Form 4 filings (51 transaction rows) across 1 company since 2026.
Which companies does MILLENNIUM MANAGEMENT LLC trade?
MILLENNIUM MANAGEMENT LLC has filed SEC Form 4 disclosures for 1 company, including SNSE.
When was MILLENNIUM MANAGEMENT LLC's most recent SEC Form 4 filing?
MILLENNIUM MANAGEMENT LLC's most recent SEC Form 4 filing on Tracefour is dated May 15, 2026.
What is MILLENNIUM MANAGEMENT LLC's total buy and sell value in the current window?
Inside the rolling retention window, MILLENNIUM MANAGEMENT LLC bought $1.3M and sold $704K based on SEC Form 4 filings.
What was MILLENNIUM MANAGEMENT LLC's largest disclosed transaction?
The largest disclosed transaction in the current window is a purchase of 15,321 SNSE shares on 2026-03-27, worth $408K, per SEC Form 4 filings.