Mark K. Oki

Chief Financial Officer

Aytu Biopharma, IncAchieve Life Sciences, Inc.

Insider activity · 24 months1 buy0 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 1 buy · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Companies

▲ Purchases (3 ops.)

€82k

▼ Sales (3 ops.)

€166k

Latest filing published 22 Sept 2025 for Achieve Life Sciences, INC..

Filing timeline

BuySale

Mark K. Oki

Insider track record

Disclosed buys

Disclosed sells

T+90 hit rate

100%

T+90 mean return

+14.2%

Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.

Signal history

Mark K. Oki: trading record in brief

Mark K. Oki (finance chief) discloses dealings in 4 companies, chiefly Alexza Pharmaceuticals Inc., Vivus Inc and Achieve Life Sciences, Inc. Between 23 March 2012 and 18 September 2025, the trades on record add up to 15 filings.

On the open market, the record shows 3 purchases worth €82k and 3 sales worth €166k. The net balance comes to €83k on the selling side. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Besides market trades, the filings include 8 share grants and 1 option exercise. 2025 to date brings 1 purchase and 1 sale.

In size, the median ticket on the buying side is €27k.

The latest filing, published on 22 September 2025, reports an open-market sale of €124k in Achieve Life Sciences, Inc. The most recent open-market purchase was published on 19 March 2025, 584 days ago. The median gap between a trade and its publication by SEC (Form 4) is 3 days. For comparison, the SEC allows two business days to file a Form 4. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.