TRex Bio (TRXB) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)
Updated Oct 16, 2026, 4:00 PM ET
- Closed at $14.01, -1.06% vs the prior close of $14.16.
- Volume 81.86K shares, 0.2x its 50-day average (light).
- New SEC filings: SCHEDULE 13G (Oct 16, 2026), SCHEDULE 13D (Oct 16, 2026), SCHEDULE 13D (Oct 16, 2026), 4 (Oct 15, 2026), SCHEDULE 13G (Oct 15, 2026).
- No new insider buys or sales reported since the prior session.
TRXB dips 1.1% to $14.01. Closed at $14.01, -1.06% vs the prior close of $14.16. Day range $13.55–$14.40, opened at $14.17.
TRXB daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 16, 2026 — TRXB dips 1.1% to $14.01
- Closed at $14.01, -1.06% vs the prior close of $14.16. Day range $13.55–$14.40, opened at $14.17.
- Volume was 81.86K shares, 0.2x its 50-day average of 411.08K — lighter than usual.
- 52-week range $13.21–$15.50; today's close sits at 35% of that range, 9.6% below the 52-week high.
Oct 15, 2026 — TRXB jumps 4.9% to $14.16
- Closed at $14.16, +4.89% vs the prior close of $13.50. Day range $13.50–$14.35, opened at $13.50.
- Volume was 88.70K shares, 0.2x its 50-day average of 491.68K — lighter than usual.
- 52-week range $13.21–$15.50; today's close sits at 41% of that range, 8.6% below the 52-week high.
Oct 14, 2026 — TRXB dips 0.7% to $13.50
- Closed at $13.50, -0.74% vs the prior close of $13.60. Day range $13.21–$14.05, opened at $13.41.
- Volume was 398.80K shares, 0.8x its 50-day average of 522.63K.
- 52-week range $13.21–$15.50; today's close sits at 13% of that range, 12.9% below the 52-week high.
Oct 13, 2026 — TRXB slides 3.1% to $13.60
- Closed at $13.60, -3.06% vs the prior close of $14.03. Day range $13.47–$14.08, opened at $13.95.
- Volume was 121.90K shares, 0.2x its 50-day average of 723.00K — lighter than usual.
- 52-week range $13.47–$15.50; today's close sits at 6% of that range, 12.3% below the 52-week high.
- SEC filings that day: 8-K.
Oct 12, 2026 — TRXB ends flat (+0.2%) to $14.03
- Closed at $14.03, +0.21% vs the prior close of $14.00. Day range $13.75–$14.36, opened at $14.19.
- Volume was 189.00K shares, 0.2x its 50-day average of 1.26M — lighter than usual.
- 52-week range $13.50–$15.50; today's close sits at 26% of that range, 9.5% below the 52-week high.
TRXB latest news & SEC filings
Every SEC filing by or about TRXB in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 16, 2026 · Form SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Oct 16, 2026 · Form SCHEDULE 13D — Activist-style stake (13D)
Activist-style stake (13D) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Oct 16, 2026 · Form SCHEDULE 13D — Activist-style stake (13D)
Activist-style stake (13D) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Oct 15, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Alexandria Venture Investments, Llc converted 1,167,930 shares on Oct 13, 2026; now holds 1,167,930
- Alexandria Venture Investments, Llc bought 178,571 shares at $14.00 (≈$2.50M) on Oct 13, 2026; now holds 1,346,501
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Oct 15, 2026 · Form SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Oct 13, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Marcus Joel S converted 41,871 shares on Oct 13, 2026; now holds 41,871
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Oct 13, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.03 — Amended its charter or bylaws / changed fiscal year.
Oct 13, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Svlsf Vi, Llc & Sv Life Sciences Fund Vi (Gp), L.P. & Sv Life Sciences Fund Vi, L.P. bought 89,783 shares at $14.00 (≈$1.26M) on Oct 8, 2026; now holds 214,869
- Svlsf Vi, Llc & Sv Life Sciences Fund Vi (Gp), L.P. & Sv Life Sciences Fund Vi, L.P. converted 1,574,074 shares on Oct 13, 2026; now holds 1,788,943
- Svlsf Vi, Llc & Sv Life Sciences Fund Vi (Gp), L.P. & Sv Life Sciences Fund Vi, L.P. converted 475,411 shares on Oct 13, 2026; now holds 2,264,354
- Svlsf Vi, Llc & Sv Life Sciences Fund Vi (Gp), L.P. & Sv Life Sciences Fund Vi, L.P. bought 3,074 shares at $14.00 (≈$43.04K) on Oct 8, 2026; now holds 7,356
- Svlsf Vi, Llc & Sv Life Sciences Fund Vi (Gp), L.P. & Sv Life Sciences Fund Vi, L.P. converted 53,892 shares on Oct 13, 2026; now holds 61,248
- Svlsf Vi, Llc & Sv Life Sciences Fund Vi (Gp), L.P. & Sv Life Sciences Fund Vi, L.P. converted 16,277 shares on Oct 13, 2026; now holds 77,525
- …plus 1 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Oct 9, 2026 · Form S-8 — Employee share plan registration
Registration of shares for employee stock plans (S-8)
Oct 9, 2026 · Form 424B4 — Final prospectus with offering price
Final prospectus with offering price
An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.
Oct 8, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Oct 8, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Oct 8, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Things to know before you trade TRXB
- How much it moves: over the last 20 sessions the average daily move was 1.99% (largest 4.9%).
- Liquidity: about 356.21K shares (≈$4.99M) trade per day on average.
- 52-week position: $14.01 vs a range of $13.21–$15.50 (35% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 0 sales.
- Latest filings: 8-K Oct 13, 2026.
- Listing: Nasdaq · industry: Biological Products, (No Diagnostic Substances).
TRXB market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 16, 2026 | 14.17 | 14.40 | 13.55 | 14.01 | 81.86K |
| Oct 15, 2026 | 13.50 | 14.35 | 13.50 | 14.16 | 88.70K |
| Oct 14, 2026 | 13.41 | 14.05 | 13.21 | 13.50 | 398.80K |
| Oct 13, 2026 | 13.95 | 14.08 | 13.47 | 13.60 | 121.90K |
| Oct 12, 2026 | 14.19 | 14.36 | 13.75 | 14.03 | 189.00K |
| Oct 9, 2026 | 13.50 | 15.50 | 13.50 | 14.00 | 1.26M |
About TRex Bio
TRex Bio (TRXB) is listed on the Nasdaq and classified by the SEC under “Biological Products, (No Diagnostic Substances)”. Its business address is in SOUTH SAN FRANCISCO, CA. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 2139097.
TRXB board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| No Form 3/4/5 filings by this group in the last 12 months. | ||
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| No Form 3/4/5 filings by this group in the last 12 months. | ||
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| No open-market insider buys or sales reported in the last 12 months. | ||||
TRXB financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| No annual XBRL figures available (foreign filers often report on Form 20-F). | ||||
Latest balance sheet: total assets $—, total liabilities $—, cash $—.
TRXB earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| No 8-K earnings releases in recent filings. | ||
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.