Insider · CIK 0001913253
Ramiro Guerrero
Files at MAIA (MAIA Biotechnology, Inc.). First filing Mar 15, 2024, latest Sep 14, 2026.
In brief
Ramiro Guerrero files SEC Form 4 as director at MAIA (MAIA Biotechnology, Inc.). Since Mar 15, 2024, Ramiro Guerrero has reported 10 open-market buys worth $773k and 0 open-market sells worth $0, the latest filed on Sep 14, 2026.
After Ramiro Guerrero's past buys, the stock trailed the S&P 500 by a median 20.7% over six months (n = 5), and 0% of those buys were ahead of the index at six months. InsiderTell labels that a negative record.
The newest scored trade: bought $50k of MAIA on Sep 10, 2026, filed Sep 14, 2026, scored 46 (moderate). In the last 12 months: 4 buys worth $252k and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MAIA: MAIA Biotechnology, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 46Moderate | MAIA Biotechnology, Inc. | $50k 37,595 shares | +5% | +50% from low-56% from high | |
| 41Moderate | MAIAbuy MAIA Biotechnology, Inc. | $184k 133,790 shares | +22% | +60% from low-53% from high | |
| 18Weak | MAIAbuy MAIA Biotechnology, Inc. | $2,386 1,794 shares | +0% | +55% from low-54% from high | |
| 18Weak | MAIAbuy MAIA Biotechnology, Inc. | $16k 11,899 shares | +2% | +58% from low-53% from high | |
| 41Moderate | MAIA Biotechnology, Inc. | $30k 20,000 shares | +4% | +36% from low-41% from high | |
| 30Weak | MAIAbuy MAIA Biotechnology, Inc. | $50k 33,333 shares | +6% | - | |
| 33Weak | MAIAbuy MAIA Biotechnology, Inc. | $110k 73,333 shares | +16% | - | |
| 41Moderate | MAIA Biotechnology, Inc. | $100k 53,418 shares | +12% | - | |
| 48Moderate | MAIA Biotechnology, Inc. | $222k 88,534 shares | +28% | - | |
| 33Weak | MAIA Biotechnology, Inc. | $8,106 6,928 shares | +2% | +58% from low-66% from high |
Transactions
Every row this insider has filed, 27 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +32,012 | $0.00 | $0 | 32,012 | 12 d ago |
| Sep 10, 2026 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +37,595 | $1.32 | $50k | 773,296 | 30 d ago |
| Aug 26, 2026 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +8,931 | $1.39 | $12k | 610,842 | 43 d ago |
| Aug 27, 2026 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +78,239 | $1.39 | $109k | 689,081 | 43 d ago |
| Aug 28, 2026 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +46,620 | $1.35 | $63k | 735,701 | 43 d ago |
| Aug 24, 2026 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +1,794 | $1.33 | $2,386 | 601,911 | Aug 26, 2026 |
| Aug 20, 2026 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +11,899 | $1.37 | $16k | 600,117 | Aug 24, 2026 |
| Jun 30, 2026 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +26,355 | $0.00 | $0 | 26,355 | Jul 2, 2026 |
| Mar 31, 2026 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +27,258 | $0.00 | $0 | 27,258 | Apr 2, 2026 |
| Dec 31, 2025 | MAIA MAIA Biotechnology, Inc. | AGrant or award Optionsderivative | +24,060 | $0.00 | $0 | 24,060 | Jan 5, 2026 |
| Oct 2, 2025 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +20,459 | $0.00 | $0 | 20,459 | Oct 6, 2025 |
| Jun 30, 2025 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +20,380 | $0.00 | $0 | 20,380 | Jul 2, 2025 |
| May 8, 2025 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +20,000 | $1.50 | $30k | 588,218 | May 12, 2025 |
| May 8, 2025 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Warrantsderivative | +20,000 | $2.05 | $41k | 20,000 | May 12, 2025 |
| Apr 4, 2025 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +20,291 | $0.00 | $0 | 20,291 | Apr 8, 2025 |
| Mar 3, 2025 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +33,333 | $1.50 | $50k | 568,218 | Mar 5, 2025 |
| Mar 3, 2025 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Warrantsderivative | +33,333 | $1.85 | $62k | 33,333 | Mar 5, 2025 |
| Feb 24, 2025 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +73,333 | $1.50 | $110k | 534,885 | Feb 25, 2025 |
| Feb 24, 2025 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Warrantsderivative | +73,333 | $1.87 | $137k | 73,333 | Feb 25, 2025 |
| Dec 31, 2024 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +10,225 | $0.00 | $0 | 10,225 | Jan 3, 2025 |
| Dec 13, 2024 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +53,418 | $1.87 | $100k | 514,970 | Dec 13, 2024 |
| Dec 13, 2024 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Warrantsderivative | +53,418 | $2.08 | $111k | 53,418 | Dec 13, 2024 |
| Nov 1, 2024 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +88,534 | $2.51 | $222k | 408,134 | Nov 4, 2024 |
| Nov 1, 2024 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Warrantsderivative | +88,534 | $2.26 | $200k | 88,534 | Nov 4, 2024 |
| Mar 14, 2024 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Common Stock | +6,928 | $1.17 | $8,106 | 319,600 | Mar 15, 2024 |
| Mar 14, 2024 | MAIA MAIA Biotechnology, Inc. | POpen-market purchase Warrantsderivative | +6,928 | $1.30 | $9,006 | 6,928 | Mar 15, 2024 |
| Dec 31, 2023 | MAIA MAIA Biotechnology, Inc. | AGrant or award Stock Optionsderivative | +15,418 | $0.00 | $0 | 15,418 | Jan 3, 2024 |
Questions about Ramiro Guerrero
Answered from the filings on this page, as of the latest one.
Is Ramiro Guerrero buying or selling?
In the last 12 months Ramiro Guerrero reported 4 open-market buys worth $252k and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $50k of MAIA on Sep 10, 2026. Grants, option exercises and tax withholding are not counted.
How did Ramiro Guerrero's past buys perform?
Measured from the first close after each filing, the stock trailed the S&P 500 by a median 20.7% over six months across 5 past buys, with 0% ahead of the index. Past results describe what happened; they do not predict the next trade.
Where does Ramiro Guerrero file Form 4?
Ramiro Guerrero has filed Form 4 at MAIA (MAIA Biotechnology, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.