A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 8 filings in this group are Form 4s for Biomea Fusion, Inc.
The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.
Across the 8 insider filings shown, the breakdown is 6 compensation award and 2 open-market purchase. 2 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.
Form 4
Compensation award
Tax / Compensation Filing
2026-06-12
BMEA insider Form 4 filed for equity award, exercise, or tax withholding
Faust Elizabeth (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (Right to Buy)
|
196,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Faust Elizabeth (Director)
Form 4
Compensation award
Tax / Compensation Filing
2026-06-12
BMEA insider Form 4 filed for equity award, exercise, or tax withholding
AGUIAR ERIC (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (Right to Buy)
|
196,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: AGUIAR ERIC (Director)
Form 4
Compensation award
Tax / Compensation Filing
2026-06-12
BMEA insider Form 4 filed for equity award, exercise, or tax withholding
Ray Sumita (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (Right to Buy)
|
196,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Ray Sumita (Director)
Form 4
Compensation award
Tax / Compensation Filing
2026-06-12
BMEA insider Form 4 filed for equity award, exercise, or tax withholding
Averill Julianne (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (Right to Buy)
|
173,711 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Averill Julianne (Director)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-03
BMEA insider Form 4 filed for equity award, exercise, or tax withholding
Erdtmann Rainer M (Director, See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (Right to Buy)
|
452,512 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Erdtmann Rainer M (Director, See Remarks)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-03
BMEA insider Form 4 filed for equity award, exercise, or tax withholding
Hitchcock Michael J.M. (Director, Interim CEO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (Right to Buy)
|
667,477 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Hitchcock Michael J.M. (Director, Interim CEO)
Form 4
Open-market purchase
Insider Buying
2025-12-15
BMEA insider Erdtmann Rainer M (Director, See Remarks) bought 30,000 shares (~$43.0K)
Erdtmann Rainer M, listed as Director, See Remarks at Biomea Fusion, Inc., reported an open-market purchase of 30,000 BMEA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
P |
Open-market purchase
|
30,000 |
$1.43 |
$43.0K |
Filing: Form 4 (Insider Transaction)
Insider: Erdtmann Rainer M (Director, See Remarks)
Shares: 30,000
Est. Value: $43.0K
Form 4
Open-market purchase
Insider Buying
2025-12-04
BMEA insider Hitchcock Michael J.M. (Director, Interim CEO) bought 100,000 shares (~$99.2K)
Hitchcock Michael J.M., listed as Director, Interim CEO at Biomea Fusion, Inc., reported an open-market purchase of 100,000 BMEA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
P |
Open-market purchase
|
100,000 |
$0.99 |
$99.2K |
Filing: Form 4 (Insider Transaction)
Insider: Hitchcock Michael J.M. (Director, Interim CEO)
Shares: 100,000
Est. Value: $99.2K