Linked issuers
1
Reporting Owner Activity for Brett Matthew Hall
Form 3/4/5 issuer positions and transaction evidence for this reporting owner.
Largest position
Immuneering Corp
Disclosed value
$1.72M
Transaction activity
Available
- Forms 3/4/5 position snapshot
-
Estimated Forms 3/4/5 value
$1.72MEstimated from Forms 3/4/5 when filings include enough holding data.
Issuers linked to this owner
1Distinct issuers connected to this reporting owner in parsed SEC filings.
Largest linked issuer position
$1.72M estimated from parsed reporting-owner filings.
Latest parsed owner filing
05 Feb 2026Most recent owner-level filing date in the parsed SEC record.
How to read Forms 3/4/5 positions
- Reported values are estimates from parsed SEC Forms 3/4/5 when the filing includes enough price and share data.
- Use this as a filing-backed owner snapshot, not as a live cap table.
- Location
- Cambridge, MA
- Latest reporting-owner signature
- /s/ Michael D. Bookman, Attorney-in-Fact for Brett Matthew Hall
- SEC filing history
- Open SEC filing history
Ownership signals
1 signal
Identity
1 identity field
SEC source record
1 source field
Source evidence
1 source field
Follow Filing Activity
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Reported issuer positions for Brett Matthew Hall
IMRX
Forms 3/4/5
Immuneering Corp
- Relationship
- Chief Scientific Officer
- Holdings value
- $1,720,586
- Past year net change
- +$45,118
- Change %
- +2.7%
- Report period
- 03 Feb 2026
Recent insider transactions for Brett Matthew Hall
| Sym | Company | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares after | Date | Ownership |
|---|
* marks a reported price that did not pass the local price check.