17 unchanged sentences
OF OPERATIONS
−Removed: months ended January 31, 2026 compared with three months ended January 31, 2025
−Removed: had no revenue during the three-month periods ended January 31, 2026 and 2025.
−Removed: have not generated any revenue to date from our therapeutics or vaccine programs.
−Removed: In addition, while we pursue our therapeutics and vaccine
−Removed: programs, we may also make investments in and form new companies to develop additional emerging technologies.
−Removed: We do not expect to begin
−Removed: generating revenue with respect to any of our current therapy or vaccine programs in the near term.
−Removed: We hope to achieve a profitable outcome
−Removed: by eventually licensing our technologies to large pharmaceutical companies that have the resources and infrastructure in place to manufacture,
−Removed: market and sell our technologies as therapeutics or vaccines.
−Removed: The eventual licensing of any of our technologies may take several years,
−Removed: if it is to occur at all, and may depend on positive results from human clinical trials.
+Added: months ended April 30, 2026 compared with three months ended April 30, 2025
+Added: had no revenue during the three-month periods ended April 30, 2026 and 2025.
+Added: We have not generated
+Added: any revenue to date from our therapeutics or vaccine programs.
+Added: In addition, while we pursue our therapeutics and vaccine programs, we
+Added: may also make investments in and form new companies to develop additional emerging technologies.
+Added: We do not expect to begin generating
+Added: revenue with respect to any of our current therapy or vaccine programs in the near term.
+Added: We hope to achieve a profitable outcome by eventually
+Added: licensing our technologies to large pharmaceutical companies that have the resources and infrastructure in place to manufacture, market
+Added: and sell our technologies as therapeutics or vaccines.
+Added: The eventual licensing of any of our technologies may take several years, if it
+Added: is to occur at all, and may depend on positive results from human clinical trials.
and Development Expenses
−Removed: the three months ended January 31, 2026, research and development expenses related to the development of our cancer vaccines and CAR-T
+Added: the three months ended April 30, 2026, research and development expenses related to the development of our cancer vaccines and CAR-T
therapeutics consisted of approximately $812,000 and $446,000, respectively.
−Removed: During the three months ended January 31, 2025 research
−Removed: and development expenses related to the development of our cancer vaccines and CAR-T therapeutics consisted of approximately $975,000
−Removed: and $577,000, respectively.
−Removed: and development expenses decreased by approximately $450,000 to approximately $1,102,000 in the three months ended January 31, 2026,
−Removed: from approximately $1,552,000 in the three months ended January 31, 2025.
−Removed: The decrease in research and development expenses was primarily
−Removed: due to a decrease in research and development expenses related to our breast cancer vaccine program as a result of fluctuations in the
−Removed: timing of certain materials manufacturing activities of approximately $189,000, a decrease in research and development expenses related
−Removed: to our CAR-T development program as a result of fluctuations in the timing of clinical trial patient enrollment of approximately $134,000,
−Removed: a decrease in employee compensation and related costs, other than stock-based compensation expense, of approximately $84,000, and a decrease
−Removed: in employee stock-based compensation expense of approximately $61,000.
+Added: During the three months ended April 30, 2025 research and
+Added: development expenses related to the development of our cancer vaccines and CAR-T therapeutics consisted of approximately $898,000 and
+Added: $424,000, respectively.
+Added: and development expenses decreased by approximately $64,000 to approximately $1,258,000 in the three months ended April 30, 2026, from
+Added: approximately $1,322,000 in the three months ended April 30, 2025.
+Added: The decrease in research and development expenses was primarily due
+Added: to a decrease in employee stock-based compensation expense of approximately $134,000 and a decrease in employee compensation and related
+Added: costs, other than stock-based compensation expense, of approximately $94,000, offset by an increase in research and development expenses
+Added: related to our ovarian cancer CAR-T development program as a result of fluctuations in the timing of clinical trial patient enrollment
+Added: of approximately $75,000 and an increase in research and development expenses related to our breast cancer vaccine program as a result
+Added: of fluctuations in the timing of certain materials manufacturing activities of approximately $65,000.
and Administrative Expenses
−Removed: and administrative expenses decreased by approximately $220,000 to approximately $1,614,000 in the three months ended January 31, 2026,
−Removed: from approximately $1,834,000 in the three months ended January 31, 2025.
+Added: and administrative expenses decreased by approximately $292,000 to approximately $1,389,000 in the three months ended April 30, 2026,
+Added: from approximately $1,681,000 in the three months ended April 30, 2025.
The decrease in general and administrative expenses was primarily
−Removed: due to a decrease in employee stock-based compensation expense of approximately $133,000, a decrease in director stock-based compensation
−Removed: of approximately $68,000, a decrease in patent prosecution costs of approximately $32,000, a decrease in director compensation, other
−Removed: than stock-based compensation expense, of approximately $29,000, and a decrease in employee compensation and related costs, other than
−Removed: stock-based compensation expense, of approximately $20,000, offset by an increase in investor and public relations expense of approximately
−Removed: income decreased by approximately $42,000 to approximately $131,000 in the three months ended January 31, 2026, from approximately $173,000
−Removed: in the three months ended January 31, 2025, primarily due to a decrease in the amount of short-term investments held and a decrease in
+Added: due to a decrease in employee stock-based compensation expense of approximately $182,000 and a decrease in patent-related costs of approximately
+Added: income decreased by approximately $79,000 to approximately $111,000 in the three months ended April 30, 2026, from approximately $190,000
+Added: in the three months ended April 30, 2025, primarily due to a decrease in the amount of short-term investments held and a decrease in
interest rates.
1 unchanged sentence
net loss attributable to noncontrolling interest, representing Wistar’s ownership interest in Certainty’s net loss, decreased
−Removed: by approximately $9,000 to approximately $20,000 in the three months ended January 31, 2026 from approximately $29,000 in the three months
−Removed: ended January 31, 2025, as Certainty’s net loss decreased.
+Added: by approximately $3,000 to approximately $20,000 in the three months ended April 30, 2026 from approximately $23,000 in the three months
+Added: ended April 30, 2025, as Certainty’s net loss decreased.
+Added: months ended April 30, 2026 compared with six months ended April 30, 2025
+Added: had no revenue during the six-month periods ended April 30, 2026 and 2025.
+Added: and Development Expenses
+Added: the six months ended April 30, 2026, research and development expenses related to the development of our cancer vaccines and CAR-T therapeutics
+Added: consisted of approximately $1,485,000 and $875,000, respectively.
+Added: During the six months ended April 30, 2025 research and development
+Added: expenses related to the development of our cancer vaccines and CAR-T therapeutics consisted of approximately $1,873,000 and $1,001,000,
+Added: respectively.
+Added: and development expenses decreased by approximately $514,000 to approximately $2,360,000 in the six months ended April 30, 2026, from
+Added: approximately $2,874,000 in the six months ended April 30, 2025.
+Added: The decrease in research and development expenses was primarily due
+Added: to a decrease in employee stock-based compensation expense of approximately $195,000, a decrease in employee compensation and related
+Added: costs, other than stock-based compensation expense, of approximately $178,000, a decrease in research and development expenses related
+Added: to our breast cancer vaccine of approximately $124,000, and a decrease in research and development expenses related to our ovarian cancer
+Added: CAR-T therapeutic of approximately $59,000, offset by an increase in legal and other professional fees of approximately $53,000.
+Added: and Administrative Expenses
+Added: and administrative expenses decreased by approximately $512,000 to approximately $3,003,000 in the six months ended April 30, 2026, from
+Added: approximately $3,515,000 in the six months ended April 30, 2025.
+Added: The decrease in general and administrative expenses was primarily due
+Added: to a decrease in employee stock-based compensation of approximately $316,000, a decrease in director stock-based compensation of approximately
+Added: $77,000, a decrease in patent-related costs of approximately $59,000, and a decrease in director compensation, other than stock-based
+Added: compensation expense, of approximately $44,000, offset by an increase in investor and public relations expense of approximately $43,000.
+Added: income decreased by approximately $121,000 to approximately $242,000 in the six months ended April 30, 2026, from approximately $363,000
+Added: in the six months ended April 30, 2025, primarily due to a decrease in the amount of short-term investments held and a decrease in interest
+Added: Loss Attributable to Noncontrolling Interest
+Added: net loss attributable to noncontrolling interest, representing Wistar’s ownership interest in Certainty’s net loss, decreased
+Added: by approximately $12,000 to approximately $40,000 in the six months ended April 30, 2026 from approximately $52,000 in the six months
+Added: ended April 30, 2025, as Certainty’s net loss decreased.
AND CAPITAL RESOURCES
primary sources of liquidity are cash, cash equivalents and short-term investments.
−Removed: on currently available information as of March 9, 2026, we believe that our existing cash, cash equivalents and short-term investments
+Added: on currently available information as of June 10, 2026, we believe that our existing cash, cash equivalents and short-term investments
will be sufficient to fund our activities for at least the next twelve months.
The Company had approximately $13,686,000 of cash, cash
−Removed: equivalents and short-term investments at January 31, 2026 compared to approximately $15,174,000 at October 31, 2025 which is a reduction
−Removed: of approximately $972,000 for the three months ended January 31, 2026.
+Added: equivalents and short-term investments at April 30, 2026 compared to approximately $15,174,000 at October 31, 2025 which is a reduction
+Added: of approximately $1,488,000 for the three months ended April 30, 2026.
Therefore, the Company believes that it has sufficient cash, cash
3 unchanged sentences
technologies.
−Removed: During the three months ended January 31, 2026, we raised approximately $1,625,000, net of expenses, through an at-the-market
+Added: During the six months ended April 30, 2026, we raised approximately $2,870,000, net of expenses, through an at-the-market
equity offering of 887,134 shares of common stock.
Under our at-the-market equity program, which is currently effective and may remain
−Removed: available for us to use in the future, as of January 31, 2026, we may sell approximately $98 million of common stock.
−Removed: the three months ended January 31, 2026, cash used in operating activities was approximately $2,610,000.
+Added: available for us to use in the future, as of April 30, 2026, we may sell approximately $97 million of common stock.
+Added: the six months ended April 30, 2026, cash used in operating activities was approximately $4,351,000.
Cash provided by investing activities
2 unchanged sentences
Cash provided by financing activities was approximately $2,934,000, resulting
−Removed: from the sale of 429,328 shares of common stock in an at-the-market equity offering of approximately $1,625,000, net of expenses, and
−Removed: proceeds from stock option exercises of approximately $60,000.
−Removed: As a result, our cash, cash equivalents, and short-term investments at
−Removed: January 31, 2026 decreased approximately $972,000 to approximately $14,202,000 from approximately $15,174,000 at October 31, 2025.
+Added: from the sale of 887,134 shares of common stock in an at-the-market equity offering of approximately $2,870,000, net of expenses, proceeds
+Added: from stock option exercises of approximately $60,000 and proceeds from the sale of common stock pursuant to an employee stock purchase
+Added: plan of approximately $4,000.
+Added: As a result, our cash, cash equivalents, and short-term investments at April 30, 2026 decreased approximately
+Added: $1,488,000 to approximately $13,686,000 from approximately $15,174,000 at October 31, 2025.
have expected future cash obligations related to the lease of our executive offices through 2029, inclusive of extension periods, estimated
94 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.