MAIA Biotechnology, Inc. (MAIA) has 12 known insider and institutional holders on record. The largest holder is Vitoc Vlad with 903,421 shares. Other notable holders include Gryaznov Sergei and Obrocea Mihail.
Over the last 12 months, insiders have made 49 transactions in MAIA stock — 49 buys (valued at $2.87M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
MAIA Insider Ownership
Top Holder
Vitoc Vlad
903,421 shares
Buys (12 mo)
49
$2.87M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Vitoc Vlad |
10 Percent Owner, Officer: Chief Executive Officer |
903,421 |
2025-12-04 |
|
| 2 |
Gryaznov Sergei |
Chief Scientific Officer |
200,000 |
2025-05-16 |
|
| 3 |
Obrocea Mihail |
Chief Medical Officer |
87,495 |
2023-06-05 |
|
| 4 |
Mcguire Joseph F |
Chief Financial Officer |
69,075 |
2023-06-05 |
|
| 5 |
Himmelreich Jeffrey C |
Head of Finance |
40,000 |
2025-05-16 |
|
| 6 |
Louie Ngar Yee |
Director |
33,748 |
2026-04-02 |
|
| 7 |
Smith Stan |
Director |
33,099 |
2026-04-02 |
|
| 8 |
Luput Cristian |
Director |
28,556 |
2026-04-02 |
|
| 9 |
Chaouki Steven M |
Director |
27,907 |
2026-04-02 |
|
| 10 |
Guerrero Ramiro |
Director |
27,258 |
2026-04-02 |
|
| 11 |
Theagene Jean-manasse |
Director |
27,258 |
2026-04-02 |
|
| 12 |
Vlad Laurentiu |
Director |
3,045 |
2023-01-04 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-31 |
Theagene Jean-manasse |
Director |
RSU Award |
27,258 |
$1.40 |
$38.16K |
| 2026-03-31 |
Luput Cristian |
Director |
RSU Award |
28,556 |
$1.40 |
$39.98K |
| 2026-03-31 |
Louie Ngar Yee |
Director |
RSU Award |
33,748 |
$1.40 |
$47.25K |
| 2026-03-31 |
Guerrero Ramiro |
Director |
RSU Award |
27,258 |
$1.40 |
$38.16K |
| 2026-03-31 |
Smith Stan |
Director |
RSU Award |
33,099 |
$1.40 |
$46.34K |
| 2026-03-31 |
Chaouki Steven M |
Director |
RSU Award |
27,907 |
$1.40 |
$39.07K |
| 2024-05-01 |
Smith Stan |
Director |
Gift (Received) |
20,000 |
- |
- |
| 2022-09-19 |
Smith Stan |
Director |
Informative Buy |
2,700 |
$3.69 |
$9.96K |
| 2025-12-31 |
Theagene Jean-manasse |
Director |
RSU Award |
24,060 |
$1.53 |
$36.81K |
| 2025-12-31 |
Luput Cristian |
Director |
RSU Award |
25,206 |
$1.53 |
$38.57K |
| 2025-12-31 |
Louie Ngar Yee |
Director |
RSU Award |
29,789 |
$1.53 |
$45.58K |
| 2025-12-31 |
Guerrero Ramiro |
Director |
RSU Award |
24,060 |
$1.53 |
$36.81K |
| 2025-12-31 |
Smith Stan |
Director |
RSU Award |
29,216 |
$1.53 |
$44.7K |
| 2025-12-31 |
Chaouki Steven M |
Director |
RSU Award |
24,633 |
$1.53 |
$37.69K |
| 2025-12-22 |
Louie Ngar Yee |
Director |
Informative Buy |
81,699 |
$1.36 |
$111.11K |
| 2025-12-22 |
Smith Stan |
Director |
Informative Buy |
57,189 |
$1.36 |
$77.78K |
| 2025-12-22 |
Chaouki Steven M |
Director |
Informative Buy |
40,849 |
$1.36 |
$55.55K |
| 2025-12-05 |
Smith Stan |
Director |
Informative Buy |
4,580 |
$1.20 |
$5.5K |
| 2025-11-28 |
Vitoc Vlad |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Buy |
50,000 |
$1.14 |
$56.83K |
| 2025-11-28 |
Luput Cristian |
Director |
Informative Buy |
18,145 |
$1.11 |
$20.23K |
| 2025-11-26 |
Luput Cristian |
Director |
Informative Buy |
20,000 |
$1.08 |
$21.62K |
| 2025-11-28 |
Vitoc Vlad |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Buy |
50,000 |
$1.14 |
$56.83K |
| 2025-11-26 |
Vitoc Vlad |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Buy |
22,000 |
$1.05 |
$23.02K |
| 2025-11-26 |
Smith Stan |
Director |
Informative Buy |
15,000 |
$1.04 |
$15.58K |
| 2025-11-25 |
Luput Cristian |
Director |
Informative Buy |
10,000 |
$0.98 |
$9.79K |
