Curnes Nelson Bunker 4
4 · Mobia Medical, Inc. · Filed May 11, 2026
Research Summary
AI-generated summary of this filing
Mobia Medical (MOBI) CFO Nelson C. Bunker Converts Shares & Exercises Options
What Happened
- Nelson C. Bunker, Mobia Medical’s Chief Financial Officer, reported a series of derivative conversions, awards and option transactions tied to the company’s IPO and related financings. The filing shows multiple conversions of preferred stock, warrants and convertible notes into common stock (completed immediately prior to the Offering), several large grants/awards of derivative share equivalents, and a small in-the-money option exercise.
- Notable specific items: exercised 13,684 option shares at $14.65 for $200,512 (acquired) on 2026-05-11; 13,368 shares were withheld/disposed to cover tax or exercise costs (reported as F — 13,368 shares @ $15.00, $200,520). The filing also lists large award/grant entries (e.g., 2,000,000 and 4,000,000 share-equivalent awards on 2026-01-30) and many conversions of Series A–F preferred, warrants and convertible notes into common stock in connection with the Offering (blocks include multi-hundred-thousand and multi-million share amounts).
Key Details
- Transaction dates: primary activity reported 2026-01-30 through 2026-05-11; filing date 2026-05-11 (reporting period starts 2026-01-30).
- Option exercise: 13,684 shares exercised @ $14.65 (cash paid $200,512). Tax/exercise withholding: 13,368 shares reported disposed @ $15.00 ($200,520), indicating net-share settlement/tax withholding.
- Large awards/grants: reported awards on 2026-01-30 of 2,000,000 and 4,000,000 share-equivalents and additional awards (e.g., ~100,938 and 206,070 share-equivalents) — these are reported as derivative awards.
- Conversions: numerous conversions of preferred stock, warrants and convertible notes into common stock (many individual blocks ranging from tens of thousands up to multi-million shares). Footnotes state these conversions occurred immediately prior to the Offering.
- Footnotes of interest:
- F1: Series A, C, D, E-1, E-2 and F preferred converted into common immediately prior to the IPO.
- F2: Convertible notes converted automatically into common at a formula-based conversion price (discounted or valuation-based).
- F5: Warrants exercised under a net exercise provision (no cash exercised; shares net-settled).
- F4: A stock option award vests 25% on May 7, 2027, then monthly over 36 months (applies to certain option grants).
- F3: Some transactions occurred prior to registration and are reported per Rule 16a-2(a).
- Shares owned after transaction: the Form 4 does not provide a single total "shares owned after" figure in the reported lines — ownership totals are not explicitly summarized in the filing.
- Timeliness: The filing was submitted on 2026-05-11 for transactions with a period date of 2026-01-30 — this indicates a late report of earlier (pre-Offering) transactions.
Context
- Many entries are derivative conversions tied to the IPO—these are routine structural steps when preferred stock, warrants and convertible notes convert into common stock on or immediately before an IPO closing. Footnotes explain conversion mechanics (including net exercise and discount conversion features).
- The option exercise shows a cashless/net settlement pattern (shares withheld to cover taxes/exercise), which is common and not necessarily a bullish or bearish signal by itself.
- Several dollar amounts in the filing appear as large nominal derivative valuations (formula-based) rather than cash paid/received; treat those as accounting/derivative valuations rather than direct cash value realized at the time.
- Because the filing covers a complex mix of pre-IPO conversions, awards and small option exercises, retail investors should view this as reporting of IPO-related capitalization changes and insider compensation mechanics rather than a simple open-market buy or sell.
If you want, I can extract and list every conversion/grant line-item with dates and counts in a compact table for easier review.
Insider Transaction Report
Form 4
Curnes Nelson Bunker
Chief Financial Officer
Transactions
- Conversion
Common Stock
[F1]2026-05-11+283,895→ 303,322 total - Exercise of In-Money
Common Stock
2026-05-11$14.65/sh+13,684$200,512→ 317,006 total - Tax Payment
Common Stock
2026-05-11$15.00/sh−13,368$200,520→ 303,638 total - Conversion
Common Stock
[F1]2026-05-11+5,742→ 5,742 total(indirect: By Trust) - Conversion
Common Stock
[F1]2026-05-11+476,485→ 476,485 total(indirect: By Exceller Hunt Microtransponder 2017, LP) - Conversion
Common Stock
[F2]2026-05-11+333,333→ 809,818 total(indirect: By Exceller Hunt Microtransponder 2017, LP) - Conversion
Common Stock
[F2]2026-05-11+175,077→ 175,077 total(indirect: By Curnes Fund 2001) - Award
Convertible Notes
[F2][F3]2026-01-30$2000000.00/sh+2,000,000$4,000,000,000,000→ 2,000,000 total(indirect: By Curnes Fund 2001)→ Common Stock (166,666 underlying) - Award
Convertible Notes
[F2][F3]2026-01-30$4000000.00/sh+4,000,000$16,000,000,000,000→ 4,000,000 total(indirect: By Exceller Hunt Microtransponder 2017, LP)→ Common Stock (333,333 underlying) - Award
Convertible Notes
[F2][F3]2026-02-05$100937.62/sh+100,937.62$10,188,403,131→ 2,100,937.62 total(indirect: By Curnes Fund 2001)→ Common Stock (8,411 underlying) - Award
Stock Option
[F4]2026-05-07+206,070→ 206,070 totalExercise: $15.00Exp: 2036-05-07→ Common Stock (206,070 underlying) - Conversion
Series A Preferred Stock
[F1]2026-05-11−191,330→ 0 total→ Common Stock (54,932 underlying) - Conversion
Series C Preferred Stock
[F1]2026-05-11−100,000→ 0 total→ Common Stock (28,710 underlying) - Conversion
Series D Preferred Stock
[F1]2026-05-11−383,333→ 0 total→ Common Stock (110,058 underlying) - Conversion
Series E-1 Preferred Stock
[F1]2026-05-11−29,168→ 0 total→ Common Stock (8,374 underlying) - Conversion
Series F Preferred Stock
[F1]2026-05-11−284,986→ 0 total→ Common Stock (81,821 underlying) - Conversion
Series C Preferred Stock
[F1]2026-05-11−20,000→ 0 total(indirect: By Trust)→ Common Stock (5,742 underlying) - Conversion
Series D Preferred Stock
[F1]2026-05-11−505,269→ 0 total(indirect: By Exceller Hunt Microtransponder 2017, LP)→ Common Stock (145,067 underlying) - Conversion
Series E-1 Preferred Stock
[F1]2026-05-11−272,271→ 0 total(indirect: By Exceller Hunt Microtransponder 2017, LP)→ Common Stock (78,171 underlying) - Conversion
Series E-2 Preferred Stock
[F1]2026-05-11−596,219→ 0 total(indirect: By Exceller Hunt Microtransponder 2017, LP)→ Common Stock (171,179 underlying) - Conversion
Series F Preferred Stock
[F1]2026-05-11−285,846→ 0 total(indirect: By Exceller Hunt Microtransponder 2017, LP)→ Common Stock (82,068 underlying) - Exercise of In-Money
Warrants
[F5]2026-05-11−23,666→ 0 totalExercise: $14.65Exp: 2033-06-13→ Common Stock (6,890 underlying) - Exercise of In-Money
Warrants
[F5]2026-05-11−24,000→ 0 totalExercise: $14.65Exp: 2033-05-24→ Common Stock (6,794 underlying) - Conversion
Convertible Notes
[F2]2026-05-11−2,100,937.62→ 0 total(indirect: By Curnes Fund 2001)→ Common Stock (175,077 underlying) - Conversion
Convertible Notes
[F2]2026-05-11−4,000,000→ 0 total(indirect: By Exceller Hunt Microtransponder 2017, LP)→ Common Stock (333,333 underlying)
Footnotes (5)
- [F1]Each share of the Series A, Series C, Series D, Series E-1, Series E-2 and Series F Preferred Stock converted into Common Stock immediately prior to the completion of the Issuer's initial public offering (the "Offering") pursuant to its terms.
- [F2]The Convertible Notes automatically converted into Common Stock immediately prior to the closing of the Offering. The conversion price is the lower of (a) 80% of the Offering price per share and (b) the valuation of the Issuer immediately prior to the closing of the Offering divided by the number of fully diluted shares of capital stock (on an as-converted basis) outstanding immediately prior to Offering, excluding the Convertible Notes.
- [F3]This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Offering, and is reported herein pursuant to Rule 16a-2(a).
- [F4]The stock option will vest as to 25% of the underlying shares on May 7, 2027, and will vest thereafter in 36 substantially equal monthly installments.
- [F5]The warrants are currently exercisable. In connection with the Offering, the warrants were exercised according to the terms of the applicable warrant agreement. The warrants have a net exercise provision under which the Reporting Person may, in lieu of payment of the exercise price in cash, surrender the warrants and receive a net amount of shares based on the fair market value of the shares at the time of exercise of the warrants after deduction of the aggregate exercise price.
Signature
/s/ Chase Leavitt, Attorney-in-Fact|2026-05-11