v3.26.1
Net Loss Per Common Share (Tables)
 6 Months Ended
Jun. 30, 2026
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Net Loss Per Common Share Attributable to Common Shareholders
Net loss per common share is calculated in accordance with ASC 260, Earnings Per Share. Basic and diluted net loss per common share attributable to common stockholders is calculated for the periods presented as follows (in thousands):
Three months ended June 30,Six months ended June 30,
2026202520262025
NUMERATOR
Net loss$(6,356)$(6,462)$(13,254)$(11,284)
Less: Net loss attributable to noncontrolling interest— (14)— (23)
Less: Deemed dividend on down round provision from Series A convertible preferred stock(2,539)— (2,539)— 
Less: Series A Preferred Stock dividends - undeclared(37)(117)(74)(117)
Net loss attributable to Serina common stockholders$(8,932)$(6,565)$(15,867)$(11,378)
DENOMINATOR
Weighted-average shares of common stock outstanding used to calculate basic net loss per common share16,385 10,004 14,232 9,883 
Net loss per common share attributable to common stockholders, basic and diluted$(0.55)$(0.66)$(1.11)$(1.15)
Schedule of Potentially Dilutive Common Shares
For each of the three and six months ended June 30, 2026 and 2025, the Company had net losses. See the following table for all the potential dilutive instruments that were excluded from the calculation of diluted net loss per share (in thousands):
Three months ended June 30,Six months ended June 30,
2026202520262025
Stock options4,418 3,295 4,418 3,295 
Warrants7,116 1,997 7,116 1,997 
Series A convertible preferred stock— 984 — 984 
2025 Convertible Note
965 — 965 — 
Total anti-dilutive securities12,499 6,276 12,499 6,276