Transaction · 0001722024-26-000004

Alexandria Venture Investments, LLC

Alexandria Venture Investments, LLC, 10%, reported an open-market or private purchase at TRex Bio, Inc. involving 178571.000000 shares for an estimated $2499994.00. Reported holdings after the transaction were 1346501.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code P10%
TRXBTRex Bio, Inc.
Trade date
Oct 13, 2026
Filing date
Oct 15, 2026
View on SEC Insider profile
Estimated value$2.49MShares × reported price
Shares traded178k$14.00 per share
Holdings after1.34MDirect
% of reported position traded15.29%This security and ownership context
How reported position traded is calculated

Shares purchased ÷ (holdings after − shares purchased). Estimated position before: 1,167,930 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

TRXB price since this filing

Daily closing prices, with the filing date and available return windows
TRXB · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago1d ago -0.9%
Returns since7d30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Buy
Code P
Identifier
0001722024-26-000004
Common Stock
Transaction date
Oct 13, 2026
Filed Oct 15, 2026, 08:33 PM · 2d delay
Shares
178,571 sh
$14.00 per share
Estimated value
$2.49M
Computed from shares × price
Holdings after
1,346,501 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Buy Direct Ownership Large Buy 10% Owner Buy
Filing-only score

+50 points

Compact filing score computed from stored Form 4 facts. Version v1.

Strong filing signal

This filing has a high positive filing-only score. It may deserve closer research, but it is not an investment recommendation.

How this score is calculated
  • open_market_purchase+12 points

    transaction_code = P

    Code P is a discretionary open-market purchase.
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • ten_percent_owner_buy+4 points

    is_ten_percent_owner = true

    10% beneficial owner open-market purchase.
  • cluster_buy+14 points

    cluster-buy signal matched

    Multiple insiders bought within the configured window.
  • large_buy_absolute+10 points

    large-buy signal with absolute_triggered = true

    Open-market purchase exceeds the configured absolute threshold.
  • timely_filing+4 points

    reporting_delay_days = 2

    Filing reported within two business days of the transaction.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector No10% YesOther No
Footnotes & amended
  1. F1

    Each share of preferred stock automatically converted into the Issuer's common stock at a ratio of 3.8649 shares of preferred stock to 1 share of common stock upon closing of the Issuer's initial publ…

Original filing · 0001722024-26-000004
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