Insider transactions

Niall O'Donnell

CIK 1780235 · last filed 2023-06-08

Niall O'Donnell is a corporate insider who has filed 16 SEC Form 4 insider transactions across 3 companies since 2019. The most recent filing, for MIRM, was dated Sep 6, 2023. Across all open-market trades the lifetime net is +$8.3M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $135.2M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$135.25M

Companies

3

Total Filings

16

Lifetime Open-Market Net

$8.29M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

Filer Profile

Reported Address
C/O RIVERVEST VENTURE PARTNERS
101 SOUTH HANLEY RD., STE 1850
ST. LOUIS, MO 63105
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
OnKure Therapeutics, Inc. (RPHM) Delisted Director 218,871 $18.20 $3.98M $4.00M 5 2023-06-08
SPRB Director 17,684 $45.71 $808.3K $5.75M 5 2023-05-26
MIRM Director 1,621,118 $82.93 $134.44M -$1.46M 5 2022-11-15

Recent Filings

16 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2023-09-06 MIRM Notice (144) −51,000 -$1.43M EDGAR
2023-06-08 OnKure Therapeutics, Inc. (RPHM) Delisted Grant (A) — $0 EDGAR
2023-05-26 SPRB Grant (A) — $0 EDGAR
2023-05-16 SPRB Buy (P) +630,400 $2.00M EDGAR
2023-05-10 OnKure Therapeutics, Inc. (RPHM) Delisted Buy (P) +125,000 $1.00M EDGAR
2022-11-15 MIRM Sell (S) −300,000 -$5.96M EDGAR
2022-06-06 MIRM Grant (A) — $0 EDGAR
2022-06-03 OnKure Therapeutics, Inc. (RPHM) Delisted Grant (A) — $0 EDGAR
2022-05-27 SPRB Grant (A) — $0 EDGAR
2021-06-08 MIRM Grant (A) — $0 EDGAR
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.