Matrix Capital Management Company, LP
10% owner
SaleAlert
- Shares
- 6,922,870
- Price
- $5.64
- Value
- $39,044,987
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•38 filings
AURA
Aura Biosciences, Inc.
No net buying or selling imbalance over the last 3 months
No net buyers or sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
$0.00
0 buyers · 0 sellers
12-month purchases
$0.00
0 distinct insiders
12-month sales
$39,044,987
2 distinct insiders
Highlighted alerts
2
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
65
Raw transactions
Everything returned by the filing
2
Voluntary view
P/S trades after deterministic checks
63
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- S
- Shares
- 12,824
- Price
- $6.42
- Footnotes
- 1
The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.
Raspberry interpretation
Informational — no alert
Reason: tax_withholding. The filing footnotes identify tax withholding.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Elazzouzi Amy
Senior Vice President, Finance
SaleAlert
- Shares
- 7,722
- Price
- $6.70
- Value
- $51,737
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.