Kestenberg-Messina Kaitlin M. 4
4 · ADMA BIOLOGICS, INC. · Filed Jul 28, 2026
Research Summary
AI-generated summary of this filing
ADMA BIOLOGICS COO Kaitlin M. Kestenberg‑Messina Withholds 3,177 Shares
What Happened
- Kaitlin M. Kestenberg‑Messina, Chief Operating Officer and SVP, Compliance of ADMA BIOLOGICS (ADMA), had 3,177 shares withheld to satisfy mandatory tax withholding related to the vesting/settlement of restricted stock units (RSUs). The withholding was recorded at $8.37 per share for a total value of $26,591.
- This was a tax-withholding disposition (transaction code F) — not an open-market sale of shares.
Key Details
- Transaction date: July 24, 2026. SEC filing date / Period of Report: July 28, 2026 (period of report: July 24, 2026).
- Withheld shares: 3,177 at $8.37 each; total value reported: $26,591.
- Transaction code: F — represents shares withheld by the issuer to satisfy mandatory tax withholding upon RSU vesting (not a sale).
- Shares owned after transaction (as reported): 165,682 shares of common stock directly owned, plus multiple unvested RSU balances:
- 91,631 unvested RSUs from 2/9/2026 grant (25% vests each year over 4 years)
- 58,338 unvested RSUs remaining from 2/19/2025 grant (out of 77,784)
- 96,160 unvested RSUs remaining from 4/1/2024 grant (out of 192,320)
- 7,500 unvested RSUs remaining from 7/24/2023 grant (out of 30,000)
- 23,750 unvested RSUs remaining from 3/6/2023 grant (out of 95,000)
- Each RSU represents a contingent right to receive one share of common stock upon vesting.
- Filing timing: reported on Jul 28, 2026 for a Jul 24, 2026 transaction (4 days later). The filing shows the routine tax-withholding event; the filing does not indicate an open-market sale.
Context
- Withholding shares to cover taxes upon RSU vesting is common and reported as a disposition (F). It is a routine administrative action and does not necessarily signal the insider is reducing economic exposure via a market sale.
- For retail investors, purchases or open-market sales by insiders can be more informative about sentiment; tax-withholdings on vesting are typically neutral operational events.
Insider Transaction Report
Form 4
Kestenberg-Messina Kaitlin M.
COO and SVP, Compliance
Transactions
- Tax Payment
Common Stock
[F1][F2][F3]2026-07-24$8.37/sh−3,177$26,591→ 443,061 total
Footnotes (3)
- [F1]Represents shares withheld by the Issuer to satisfy the mandatory tax withholding requirements upon the non-reportable vesting and settlement of restricted stock units ("RSUs"). This is not an open market sale of securities.
- [F2]Includes, as of the transaction date, (i) 91,631 unvested RSUs out of 91,631 RSUs granted on February 9, 2026, vesting 25% on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into common stock upon vesting; (ii) 58,338 unvested RSUs out of 77,784 RSUs granted on February 19, 2025, vesting 25% on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into common stock upon vesting; (iii) 96,160 unvested RSUs out of 192,320 RSUs granted on April 1, 2024, vesting 25% on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into common stock upon vesting;
- [F3](continued from footnote 2) (iv) 7,500 unvested RSUs out of 30,000 RSUs granted on July 24, 2023, vesting 25% on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into common stock upon vesting; (v) 23,750 unvested RSUs out of 95,000 RSUs granted on March 6, 2023, vesting 25% on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into common stock upon vesting; and (vi) 165,682 shares of common stock directly owned by the Reporting Person, which reflects prior option exercises and the prior net settlement upon vesting of previously granted RSUs after the withholding of shares to cover applicable taxes. Each RSU represents a contingent right to receive one share of common stock of the Issuer.
Signature
/s/ Kaitlin M. Kestenberg-Messina, by Michael A. Goldstein as Attorney-in-fact|2026-07-28